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Who

We

Are

Who

We

Are

An

inte

rnat

iona

l not

An

inte

rnat

iona

l not

-- forfor --

prof

it, sc

ient

ific

soci

ety

prof

it, sc

ient

ific

soci

ety

of m

ore

than

of

mor

e th

an 88

,000

,000

enga

ged

in so

lid st

ate

and

enga

ged

in so

lid st

ate

and

elec

troch

emic

al sc

ienc

e an

d te

chno

logy

.el

ectro

chem

ical

scie

nce

and

tech

nolo

gy.

The

miss

ion

of E

CS is

to d

issem

inat

e sc

ient

ific

The

miss

ion

of E

CS is

to d

issem

inat

e sc

ient

ific

know

ledg

e in

ord

er to

adv

ance

the

theo

ry a

nd

know

ledg

e in

ord

er to

adv

ance

the

theo

ry a

nd

prac

tice

of e

lect

roch

emist

ry a

nd a

llied

subj

ects

.pr

actic

e of

ele

ctro

chem

istry

and

alli

ed su

bjec

ts.

EC

S M

embe

rshi

p by

Sec

tions

EC

S M

embe

rshi

p by

Sec

tions

Ariz

ona

117

Japa

n77

0

Braz

ilian

50K

orea

193

Cana

dian

286

Mex

ican

3

Chic

ago

206

Nat

iona

l Cap

ital

182

Clev

elan

d11

0N

ew E

nglan

d31

9

Det

roit

101

Pitts

burg

h97

Eur

opea

n10

23Sa

n Fr

anci

sco

368

Geo

rgia

161

Texa

s17

2

Isra

el24

Twin

Citi

es91

Euro

pe—

1023

Japa

n—77

0

San

Fran

cisco

—36

8Cana

da—

286

Geor

gia—

161

Natio

nal C

apita

l—18

2

Chica

go—

206

New

Engl

and—

319

10 L

arge

st E

CS S

ectio

ns

Kore

a—19

3

Texa

s—17

2

EC

S M

embe

rshi

p by

Div

isio

nsE

CS

Mem

bers

hip

by D

ivis

ions

Batte

ry12

91H

igh

Tem

pera

ture

Mat

erial

s21

0

Corr

osio

n52

9In

dust

rial E

lectro

chem

istry

an

d E

lect

roch

emic

al E

ngin

eerin

g26

1

Diel

ectri

c Sc

ience

an

d Te

chno

logy

350

Lum

ines

cenc

e an

dD

isplay

Mat

erial

s11

0

Elec

trode

posit

ion

517

Org

anic

and

Bio

logi

cal

Elec

troch

emist

ry20

7

Elec

troni

cs a

nd P

hoto

nics

752

Phys

ical

and

Ana

lytic

al E

lectro

chem

istry

627

Ene

rgy

Tech

nolo

gy83

8Se

nsor

240

Fulle

rene

s, N

anot

ubes

, and

Ca

rbon

Nan

ostru

ctur

es19

8

1902

EC

S f

ou

nd

ed

1921

Ele

ctro

dep

osi

tio

nEle

ctro

therm

ics

1932

Ele

ctro

nic

s

1936

Gen

era

l &

Th

eo

reti

cal

1940

Org

an

ic &

Bio

log

ical

Ele

ctro

chem

istr

y

1942

Co

rro

sio

n

(form

erly

Corr

osi

on T

echnic

al C

om

mitte

e)

1943

Ind

ust

rial Ele

ctro

lyti

c

1945

Ele

ctri

c In

sula

tio

n

1947

Batt

ery

1954

Ele

ctro

therm

ics

&

Meta

llu

rgy (

form

erly

Ele

ctro

ther

mic

s)

1965

Die

lect

rics

& I

nsu

lati

on

(f

orm

erly

Ele

ctric

Insu

lation)

1969

New

Tech

no

log

y

1971

Ph

ysi

cal &

An

aly

tica

l Ele

ctro

chem

istr

y (

form

erly

G

ener

al &

Theo

retica

l)

1982

Lu

min

esc

en

ce &

D

isp

lay

Mate

rials

1983

En

erg

y T

ech

no

log

y

1984

SO

TA

PO

CS

1988

Sen

sors

1990

Die

lect

ric

Sci

en

ce &

Tech

no

log

y(f

orm

erly

Die

lect

rics

& I

nsu

lation)

Ind

ust

rial Ele

ctro

lysi

s &

Ele

ctro

chem

ical

En

gin

eeri

ng

(form

erly

Die

lect

rics

& I

nsu

lation)

1993

Fu

llere

nes,

Nan

otu

bes

& C

arb

on

Nan

ost

ruct

ure

s

2002

Nan

ote

chn

olo

gy

2004

Fu

el

Cell

s

2005

Ph

ysi

cal &

An

aly

tica

l Ele

ctro

chem

istr

y

(form

erly

Phys

ical

Ele

ctro

chem

istr

y)

Ele

ctro

nic

s &

Ph

oto

nic

s (f

orm

erly

Ele

ctro

nic

s)

HIS

TO

RY

Hig

h T

em

pera

ture

M

ate

rials

1982

2006

Ind

ust

rial Ele

ctro

chem

istr

y

& E

lect

roch

em

ical

En

gin

eeri

ng

(form

erly

Indust

rial

Ele

ctro

lysi

s &

Ele

ctro

chem

ical

Engin

eering)

Whe

re W

e Are

Goi

ng…

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ence

is

incr

easi

ngly

in

tern

atio

nal

and E

CS h

as

resp

onded

by

expan

din

g its

in

tern

atio

nal

pre

sence

.

Sec

tion

Gro

wth

Sec

tion

Gro

wth

050

010

0015

0020

0025

0030

0035

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Nor

th A

mer

ica

Eur

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Japa

n &

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ea

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th A

mer

ica

2969

2980

2901

2699

2922

2903

2861

2826

2810

3014

2281

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pe81

389

110

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2911

7810

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n &

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457

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776

490

092

791

197

897

112

8596

3

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

Number of Members

Ho

no

lulu

, S

pri

ng

1

99

3Att

endan

ce:

2470

Paper

s:

2189

Sym

posi

a:

50

Ho

no

lulu

, Fall

19

99

Att

endan

ce:

2906

Paper

s:

2410

Sym

posi

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Reac

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acro

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Ho

no

lulu

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20

04

Att

endan

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Paper

s:

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PR

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intly

sponso

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e E

lect

roch

em

ical

So

ciety

of

Jap

an

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nic

all

y s

po

nso

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by:

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an

So

ciety

of

Ap

pli

ed

Ph

ysi

csK

ore

an

Ele

ctro

chem

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ciety

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chem

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of

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stra

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Ch

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Inst

itu

teC

hin

ese

So

ciety

of

Ele

ctro

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Ho

no

lulu

, Fall 1

98

7Att

endan

ce:

2537

Paper

s:

1703

Sym

posi

a:

57

Reac

hing

acro

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e Atla

ntic

21

6th

EC

S M

eeti

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Oct

ob

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4-9

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s……

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posi

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24

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Goi

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ence

is

incr

easi

ngly

in

tern

atio

nal

and E

CS h

as

resp

onded

by

expan

din

g its

in

tern

atio

nal

pre

sence

.

•In

form

ati

on

wil

l alw

ays

be o

ur

core

pro

du

ct.

See

our

web

site

at:

ww

w.e

lect

roch

em.o

rg

Slid

e 1

1

CSZ

1

this

lang

uage

is p

revi

ousl

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peat

edCS

Z, 7

/19/

2004

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urn

al o

f The

Ele

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chem

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Soci

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Ele

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chem

ical

and S

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te

Lett

ers

nte

rfac

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ransa

ctio

ns

Mee

ting A

bst

ract

s

All

ECS

cont

ent,

in o

ne s

eam

less

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ll EC

S co

nten

t, in

one

sea

mle

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reso

urce

, ava

ilabl

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tim

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vaila

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all t

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ceed

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onogra

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earn

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r•

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isto

ry C

ente

r

scie

ntifi

c co

mm

unity

.O

ur o

blig

atio

n to

our

bro

ad c

onst

ituen

cy is

to p

rovi

de th

e “c

onne

ctiv

ity”

so e

ssen

tial i

n th

e cu

rren

t

• •I

• •

CSZ2

Info

rmat

ion

Will

Alwa

ys B

e Our

Cor

e Pro

duct

The

ECS journ

als

publis

h o

n a

n “

e-firs

t”bas

is,

with a

rtic

les

post

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to t

he

Web

as s

oon a

s th

ey a

re r

eady.

Month

ly p

aper

and a

nnual

CD

-RO

M

editio

ns

follo

w.

Th

e J

ou

rnal o

f Th

e

Ele

ctro

chem

ical

So

ciety

is t

he m

ost

hig

hly

-cit

ed

jo

urn

al

in t

he f

ield

, acc

ord

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to

th

e 2

00

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We

are

com

mitt

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pro

vidi

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bet

ter a

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lanu

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peat

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Try

info

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the

bett

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CSZ,

7/1

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g 20

0764 p

ages

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Sum

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2007

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pre

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form

atio

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lway

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our

core

pro

duct

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•S

tud

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t M

em

bers

are

th

e

futu

re o

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e S

oci

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Stud

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re th

e Fut

ure o

f the

Soc

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We a

ctiv

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recr

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st

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ts a

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o

reta

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s

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mer

fel

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Cas

e fo

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Goa

lsC

ase

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uppo

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“Wh

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up

po

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CS

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Furth

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xpan

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CS D

igita

l Lib

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onl

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arch

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xpan

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and

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arch

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Org

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Stud

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rgan

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pter

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cutti

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dust

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cutti

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To e

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exp

and

our b

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form

at, s

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and

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oppo

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oppo

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Fost

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thro

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supp

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aw

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row

thM

eta

l In

du

ced

Cry

stall

izati

on

Meta

l In

du

ced

Cry

stall

izati

on

Exp

eri

men

tal

Exp

eri

men

tal

AIC

Larg

e G

rain

Gro

wth

AIC

Larg

e G

rain

Gro

wth

Ep

itaxia

l G

row

thEp

itaxia

l G

row

thR

esu

lts

an

d D

iscu

ssio

nR

esu

lts

an

d D

iscu

ssio

nS

um

mary

an

d C

on

clu

sio

nS

um

mary

an

d C

on

clu

sio

nA

ckn

ow

led

gem

en

tsA

ckn

ow

led

gem

en

ts

Pow

erin

g th

e U

S

nsu

mption for

a

ng 2

.5 p

erce

nt

of th

is r

adia

tion

●Sunlig

ht

striki

ng t

he

eart

h for

40 m

inute

s is

eq

uiv

alen

t to

glo

bal

ener

gy

coye

ar.

●250,0

00 s

quar

e m

iles

of la

nd in t

he

South

wes

t U

S a

re s

uitab

le for

const

ruct

ing s

ola

r pow

er

pla

nts

. T

his

are

a is

slig

htly

larg

er t

han

the

com

bin

ed a

reas

of Arizo

na

and N

ew M

exic

o.

●This

are

a of

land r

ecei

ves

4,5

00 q

uad

rilli

on

British

ther

mal

units

(Btu

) of so

lar

radia

tion p

er

year

. C

onve

rti

into

ele

ctrici

ty w

ould

mat

ch t

he

nat

ion’s

tota

l en

ergy

consu

mption in 2

006.

25

25

Pow

erin

g th

e U

STota

l co

st t

o im

ple

men

t =

$400 b

illio

n o

ver

Plan

would

req

uire

14%

effic

iency

and a

n

Sev

eral

met

hods

of pro

vidin

g e

lect

rici

ty

: I

s $1.0

0/w

att

inst

alle

d s

till

a

● the

nex

t 40 y

ears

.

● inst

alla

tion c

ost

of $1.2

0 p

er w

att

of ca

pac

ity.

● during n

on-e

lect

rici

ty p

roduci

ng t

imes

hav

e bee

n p

ropose

d.

QU

ES

TIO

Nre

alis

tic

num

ber

consi

der

ing t

hat

the

cost

of oil

has

incr

ease

d b

y a

fact

or

of

5 s

ince

the

$1.0

0/w

att

targ

et w

as e

stab

lished

.Sci

entific

Am

eric

an,

pag

e 63,

January

2008

26

26

Wor

ld P

V Pr

oduc

tion

●PV

pro

duct

ion h

as b

een

doublin

g e

very

2 y

ears

sin

ce

2002 m

akin

g it

the

fast

est

gro

win

g e

ner

gy

sourc

e.

●Exi

stin

g g

rid-c

onnec

ted

sola

r PV

cap

acity

is 7

.8 G

W

27

27

PV P

rodu

ctio

n by

Sel

ecte

d C

ount

ries

Chin

a:●

trip

led P

V p

roduct

ion in 2

006

●double

d P

V p

roduct

ion in 2

007

●m

arke

t sh

are

in 2

003 w

as 1

%

●m

arke

t sh

are

today

is

18%

●400 P

V c

om

panie

s

28

28

29

29

Thin

Film

PV

Prod

uctio

n

Thin

film

pro

duct

ion g

rew

fr

om

4 t

o 7

% o

f th

e PV

mar

ket

from

2003 t

o 2

007

PV M

arke

t Sha

re

30

30

Mar

ket

shar

e of so

lar

cell

types

sold

during

2006.

(Sourc

e: M

ater

ials

Today

, Volu

me

10,

Issu

e 11,

pag

e 21,

Nove

mber

2007)

PV N

eeds

and

Con

cern

s●

World u

ses

about

13 T

W o

f pow

2050

●Conve

ntional

multic

ryst

allin

e si

licon s

ola

r ce

ll m

odule

s of

today

hav

e an

effic

iency

of

about

12%

and p

rovi

de

elec

tric

ity

at a

cost

of $0.2

7/k

Wh c

om

par

ed t

o t

oday

’s g

rid e

lect

rici

ty

cost

of

$0.0

6/k

Wh

●In

additio

n t

o t

he

sola

r ce

ll co

st,

the

inst

alla

tion c

ost

s ar

e al

so h

igh

.

er –

will

ris

e to

30 T

W b

y

●Any

new

sola

r ce

ll m

ust

hav

e an

effic

iency

of at

lea

st 1

0

per

cent

to b

e ec

onom

ical

ly v

iable

.

●Sca

labili

ty is

also

an iss

ue,

as

are

relia

bili

ty a

nd lifet

ime

(Sourc

e: P

hoto

nic

s Spec

tra,

pag

e 70,

Nove

mber

2007)

31

31

EFFIC

IEN

CY

(%

)A

REA

(cm

2

24.7

4.0

20.3

1.0

ryst

allin

e Si)

10.1

1.2

µc-

Si/αSi:

H

11.7

14.2

(Bes

t to

Dat

e)P

V C

ell E

ffici

enci

es

TY

PE O

F C

ELL

)

Cry

stal

line

Si

Multic

ryst

allin

e Si

Am

orp

hous

(and

nan

oc

mic

ro-m

orp

h c

ell

32

32

PV C

ost a

nd P

roje

cted

Cos

t

33

33

Eff

icie

ncy

and c

ost

pro

ject

ions

for

firs

t-(I

), s

econd-

(II)

, an

d t

hird-

gen

erat

ion (

III)

PV t

echnolo

gie

s (w

afer

-bas

ed,

thin

film

s, a

nd

adva

nce

d t

hin

film

s, r

espec

tive

ly)

●CU

RREN

T =

$2-3

PER W

ATT

(1ST

GEN

ERATIO

N C

ELL

S)

●BY 2

009 =

$1 P

ER W

ATT

(2N

DG

EN

ERATIO

N C

ELL

S)

●BY 2

010 =

$0.7

0 P

ER W

ATT

(3RD

GEN

ERATIO

N C

ELL

S)

-PO

SSIB

LY T

O 0

.20 P

ER W

ATT

EVEN

TU

ALL

Y

[Sourc

e: M

ater

ials

Today

, Volu

me

10,

No.

11,

pag

e 42,

Nove

mber

2007].

PV M

odul

e C

ost p

er W

att

34

34

35

35

Pho

tovo

ltaic

Pow

er G

ener

atio

nP

hoto

volta

ic P

ower

Gen

erat

ion

Ph

oto

vo

ltaic

Mark

et

Gro

wth

~ 2

5%

/y

Ph

oto

vo

ltaic

Mark

et

Gro

wth

~ 2

5%

/y

Pro

du

ctio

n r

each

ed

~ 1

.6 G

W/

yP

rod

uct

ion

reach

ed

~ 1

.6 G

W/

yIn

tern

ati

on

al

PV

Ro

ad

map

Inte

rnati

on

al

PV

Ro

ad

map

––1

00

GW

/y b

y 2

03

0 (

10

%)

10

0 G

W/

y b

y 2

03

0 (

10

%)

––5

0%

fro

m r

en

ew

ab

les

by 2

05

05

0%

fro

m r

en

ew

ab

les

by 2

05

0––

2/

3 S

ola

r (P

V/

therm

al)

by 2

10

02

/3

So

lar

(PV

/th

erm

al)

by 2

10

0M

eth

od

s fo

r S

ucc

ess

Meth

od

s fo

r S

ucc

ess

––M

od

ule

Co

st R

ed

uct

ion

M

od

ule

Co

st R

ed

uct

ion

––

Avail

ab

ilit

y o

f S

ilic

on

Avail

ab

ilit

y o

f S

ilic

on

––H

igh

er

Eff

icie

ncy

Hig

her

Eff

icie

ncy

––In

crease

d M

od

ule

Lif

eti

me

Incr

ease

d M

od

ule

Lif

eti

me

36

36

Pla

nned

Sol

ar C

ell

Pla

nned

Sol

ar C

ell

Pro

duct

ion

Cap

acity

by

2010

Pro

duct

ion

Cap

acity

by

2010

Exp

ecte

d m

arke

tExp

ecte

d m

arke

t1000 M

W1000 M

WCap

acitie

s Announce

dCap

acitie

s Announce

d2200 M

W2200 M

WThin

Film

Shar

eThin

Film

Shar

e328 M

W328 M

WCry

stal

line

Shar

eCry

stal

line

Shar

e1872 M

W1872 M

W

Thin

Film

Silic

on S

olar

Cel

lsTh

in F

ilm S

ilicon

Sol

ar C

ells

A V

iabl

e O

ptio

nA

Via

ble

Opt

ion

C C-- S

i Sola

r Cel

ls

Si Sola

r Cel

ls

--ce

ll pro

cess

ing;

40%

module

)ce

ll pro

cess

ing;

40%

module

)

g f

or

Incr

ease

d A

bso

rption

g f

or

Incr

ease

d A

bso

rption

Subst

rate

Cost

is

~40%

in

Subst

rate

Cost

is

~40%

in

(20%

(20%

Thin

Si Fi

lms

on L

ow

Cost

Subst

rate

s O

ffer

Thin

Si Fi

lms

on L

ow

Cost

Subst

rate

s O

ffer

G

reat

Pote

ntial

Gre

at P

ote

ntial

Hyd

rogen

ated

Am

orp

hous

Sili

con T

hin

Film

H

ydro

gen

ated

Am

orp

hous

Sili

con T

hin

Film

Tec

hnolo

gy

is M

ature

Tec

hnolo

gy

is M

ature

Dev

elopm

ent

of

Mic

rocr

ysta

lline,

D

evel

opm

ent

of

Mic

rocr

ysta

lline,

Poly

crys

talli

ne

and E

pitax

ial Sili

con

Poly

crys

talli

ne

and E

pitax

ial Sili

con

Light

Tra

ppin

Light

Tra

ppin

Surf

ace

Pas

siva

tion f

or

Low

Rec

om

bin

atio

n

Surf

ace

Pas

siva

tion f

or

Low

Rec

om

bin

atio

n

Vel

oci

tyVel

oci

ty37

37

Exp

erim

enta

lE

xper

imen

tal

Hyd

rogen

ated

Am

orp

hous

Sili

con

Hyd

rogen

ated

Am

orp

hous

Sili

con

Dep

osi

ted b

y Pl

asm

a Enhan

ced C

hem

ical

D

eposi

ted b

y Pl

asm

a Enhan

ced C

hem

ical

Vap

or

Dep

osi

tion (

PECVD

) as

wel

l as

rf

Vap

or

Dep

osi

tion (

PECVD

) as

wel

l as

rf

Mag

net

ron S

putt

erin

gM

agnet

ron S

putt

erin

gAlu

min

um

Film

Dep

osi

ted b

y rf

Mag

net

ron

Alu

min

um

Film

Dep

osi

ted b

y rf

Mag

net

ron

Sputt

erin

gSputt

erin

gAnnea

ling f

or

Cry

stal

lizat

ion b

y Annea

ling f

or

Cry

stal

lizat

ion b

y Conve

ntional

Furn

ace,

Optica

l, a

nd L

aser

Conve

ntional

Furn

ace,

Optica

l, a

nd L

aser

Bea

m S

yste

ms

Bea

m S

yste

ms

Char

acte

riza

tion b

y XRD

, SEM

, TEM

, H

RChar

acte

riza

tion b

y XRD

, SEM

, TEM

, H

R--

TEM

, AES,

etc.

TEM

, AES,

etc.

38

38

U o

f A (S

putte

ring/

PE

CV

D) C

lust

er T

ool

U o

f A (S

putte

ring/

PE

CV

D) C

lust

er T

ool

39

39

40

40

ITZ

Rob

otic

A

rm

MPZ5

Silic

on

Spu

tter

An

nea

ling

Ch

ambe

r

MPZ1

MPZ2

MPZ4

MPZ3

Subs

trat

e Load

ing

stat

ion

a-Si

:H/a

-SiN

:H

PEC

VD

Alu

min

um

Spu

tter

Dop

ed a

-Si:

H

PEC

VD

41

41

Larg

e G

rain

Sili

con

Thin

Film

s by

M

etal

-Indu

ced

Cry

stal

lizat

ion

Larg

e G

rain

Nee

ded

for

Red

uci

ng E

HP

Larg

e G

rain

Nee

ded

for

Red

uci

ng E

HP

Rec

om

bin

atio

n a

t th

e G

rain

Boundar

ies

Rec

om

bin

atio

n a

t th

e G

rain

Boundar

ies

Vs

Gla

ss

Subs

trat

e

Cry

stal

lized

Si

Gla

ss

Subs

trat

e

42

42

Fabr

icat

ion

Pro

cess

Gla

ss

Alu

min

uma-

Si:H

Pol

y-Si

oxid

e

Ann

ealin

g at

< 4

50 C

/ 20

min

Res

ults

(con

t..)

Res

ults

(con

t..)

SEM

Imag

es

43

43

44

44

Gra

in S

ize

Con

trol

Gra

in S

ize

Con

trol

Am

orp

hous

Si m

icro

stru

cture

can

Am

orp

hous

Si m

icro

stru

cture

can

in

fluen

ce g

rain

siz

e of

crys

talli

zed

influen

ce g

rain

siz

e of

crys

talli

zed

silic

on.

Hyd

rogen

and d

opin

g c

an

silic

on.

Hyd

rogen

and d

opin

g c

an

also

influen

ce g

rain

siz

e an

d

also

influen

ce g

rain

siz

e an

d

crys

talli

zation r

ates

.cr

ysta

lliza

tion r

ates

.In

troduci

ng a

n inte

rfac

e la

yer

(of

Intr

oduci

ng a

n inte

rfac

e la

yer

(of

silc

on o

xide,

alu

min

um

oxi

de,

or

silc

on o

xide,

alu

min

um

oxi

de,

or

even

oth

er t

ypes

of

laye

rs)

can

even

oth

er t

ypes

of

laye

rs)

can

influen

ce g

rain

siz

ein

fluen

ce g

rain

siz

e

Res

ults

Res

ults

SE

M i

mag

e of

a ‘

zero

min

ute

oxid

e la

yer)

cry

stal

lized

at 4

00et

ched

aw

ay fr

om th

e sa

mpl

e.

SEM

Im

age

’sa

mpl

e (n

o °C

. A

l has

bee

n

45

45

Res

ults

(con

t.) Oxi

de

SEM

Imag

es

Res

ults

(con

t.)

No

oxid

e46

46

Res

ults

(con

t..)

Res

ults

(con

t..)

AFM

Imag

es

No

oxid

eO

xide

47

47

XR

D R

esul

ts

2628

3032

3436

380

200

400

600

800

Alum

inum

Silic

on (1

11)

CPS(arb.)

2θ (0 )

a

acuu

m

, Cur

ve II

is a

1

0 m

inut

e am

bien

t , a

nd C

urve

two

days

(tw

o-.

Oxi

de la

yer

alliz

atio

n

XRD

spe

ctra

of t

hree

sa

mpl

es. C

urve

I is

for

sam

ple

kept

in v

(zer

o-m

inut

e am

bien

t ex

posu

re ti

me)

(111

)sa

mpl

e ke

pt o

utsi

de fo

rm

inut

es (1

0-

48

48

4042

IIIIII

expo

sure

tim

e)III

is fo

r one

kep

t in

the

ambi

ent f

orda

y am

bien

t exp

osur

e tim

e)Th

e cu

rves

are

shi

fted

verti

cally

to c

ompa

re th

e pe

ak h

eigh

ts.

incr

ease

s cr

yst

tem

pera

ture

.

Nan

oN

ano --

Alu

min

umA

lum

inum

-- Indu

ced

Indu

ced

Cry

stal

lizat

ion

Cry

stal

lizat

ion

Subst

rate

was

oxi

de

coat

ed s

ilico

n w

afer

Subst

rate

was

oxi

de

coat

ed s

ilico

n w

afer

PECVD

aPECVD

a-- S

i th

ickn

ess

was

100 n

mSi th

ickn

ess

was

100 n

mAlu

min

um

thic

knes

s w

as 4

0 n

mAlu

min

um

thic

knes

s w

as 4

0 n

mAnnea

ling t

emper

ature

: 300

Annea

ling t

emper

ature

: 300-- 4

50

450˚̊CC

Annea

ling t

emper

ature

ram

pAnnea

ling t

emper

ature

ram

p-- u

p t

ime

up t

ime

was

var

ied t

o influen

ce n

ucl

eation

was

var

ied t

o influen

ce n

ucl

eation

den

sity

den

sity

Exc

ess

alum

inum

was

rem

ove

d b

y Exc

ess

alum

inum

was

rem

ove

d b

y et

chin

get

chin

g

49

49

Nan

o-A

lum

inum

-

aled

for

0102030405060

300

Largest Grain Size (µm)

Ann

e30

min

utes

350

400

450

Ann

ealin

g Te

mpe

ratu

re (o C

)

Induce

d C

ryst

alliz

atio

n

Cry

stal

lite

size

ver

sus

annea

ling t

emper

ature

50

50

Nan

o-A

lum

inum

-Induce

d C

ryst

alliz

atio

n

00

510

15

Ann

ealin

g R

amp

Up

Tim

e (H

our)

nano

-AIC

trad

ition

al A

IC

A

B

306090120

Grain Size (um)

20

51

51

Rel

atio

nsh

ip b

etw

een g

rain

siz

e an

d r

amp u

p t

ime

of

annea

ling

tem

per

ature

. I

t sh

ow

s th

at g

rain

siz

e si

gnific

antly

incr

ease

d w

ith

ram

p u

p t

ime

for

nan

o-A

IC o

f a-

Si:

H,

but

chan

ges

little

for

trad

itio

nal

AIC

of a-

Si:

H.

Nan

o-A

lum

inum

-Indu

ced

Cry

stal

lizat

ion

50 µ

m

Mic

rosc

opy

imag

e of

sam

ple

an

nea

led a

t 300

oC f

or

30 m

inute

s

52

52

Nan

o-A

lum

inum

-Induce

d C

ryst

alliz

atio

n

53

53

20 µ

m

ages

of

the

gra

ins

on t

he

sam

ple

s w

ith 2

0 h

our

p t

ime.

The

larg

est

gra

in s

ize

is a

bout

93 m

mM

icro

scopy

iman

nea

ling r

am.

a-S

200

nm A

l

30 n

m A

lSi

(220

)Si

(311

)

0

300

600

900 Intensity (arbitrary unit)

Si (1

11)

i:H

2535

4555

6575

2 θ (d

egre

e)

XRD

spec

tra

of

(a)

a-Si:

H,

(b)

nan

o-A

IC o

f a-

Si:

H,

and (

c)

trad

itio

nal

AIC

of

a-Si:

H.

The

larg

e pea

ks a

round 2θ=

28.5

deg

ree

are

Si (1

11),

indic

atin

g c

ryst

alliz

atio

n o

ccurr

ed f

or

both

(b)

and

(c).

Nan

o-A

lum

inum

-Induce

d C

ryst

alliz

atio

n

54

54

aphy

of

ooth

er

b

55

55

3-D

SPM

im

ages

show

ing

the

surf

ace

topogr

(a)

a-Si:

H;

and

poly

crys

talli

ne

silic

on f

ilms

pro

duce

d b

y (b

) nan

o-A

IC,

and (

c) t

raditio

nal

AIC

. I

t sh

ow

s th

at n

ano-A

IC

crea

tes

much

sm

a

surf

aces

than

tra

ditio

nal

AIC

.

c

Nan

o-A

lum

inum

-Induce

d C

ryst

alliz

atio

n

Are

a in

mic

rogr

aph

is 1

.275

mm

wid

e by

0.9

5 m

m h

igh.

Cry

stal

lite

size

var

ies f

rom

0.1

to 1

.0 m

m.

56

56

57

57

Uni

vers

ity o

f Ark

ansa

s P

aten

ted

Uni

vers

ity o

f Ark

ansa

s P

aten

ted

Sol

ar C

ell P

roce

ss U

sing

MIC

Sol

ar C

ell P

roce

ss U

sing

MIC

HF

Cle

an T

hin

SX o

r M

C S

iH

F Cle

an T

hin

SX o

r M

C S

iD

eposi

t a

Dep

osi

t a-- S

i:H

on F

ront

by

Si:

H o

n F

ront

by

PECVD

/Sputt

erin

gPE

CVD

/Sputt

erin

gD

eposi

t n

Dep

osi

t n

++(5

% P

) doped

(5

% P

) doped

aa-- S

i:H

on B

ack

Si:

H o

n B

ack

Dep

osi

t Al on F

ront

and

Dep

osi

t Al on F

ront

and

Bac

kBac

kAnnea

l to

Cry

stal

lize

and

Annea

l to

Cry

stal

lize

and

Tex

ture

(200

Tex

ture

(200-- 3

00

300°° C

)C)

Thin

N-T

ype

X-S

i

Thin

N-T

ype

X-S

i

Thin

N-T

ype

X-S

i

Thin

N-T

ype

X-S

i

Thin

N-T

ype

X-S

i

Thin

N-T

ype

X-S

iEtc

h G

rid a

nd D

eposi

t AR

Etc

h G

rid a

nd D

eposi

t AR

58

58

Com

paris

on o

f Sta

ndar

d V

s U

of A

C

ompa

rison

of S

tand

ard

Vs

U o

f A

Tech

nolo

gies

Tech

nolo

gies

at 1

000°C

Hig

h

Tem

p

Labor

Inte

nsi

ve

Sputt

/PECVD

a-S

i:H

Bac

ksid

e n

+ a-

Si:

H

Sputt

er A

l

Phosp

h D

iff

Proce

ssSta

rt w

ith P

-Typ

e X-S

i

Sta

ndar

d T

echnolo

gy

Sta

rt w

ith N

-Typ

e X-S

i

Annea

l 200-3

00°C

a-SiN

:H A

R C

oat

ing

New

Pat

ente

d T

ech

Bat

ch

Bac

k an

d S

ide

Lappin

g

Scr

een P

rinting C

onta

cts

Sin

tering a

t >

600°C

Bow

ing

AR C

oat

ing

Hig

h

Sur.

Rec

.

Sili

con

Thin

Film

Sol

ar C

ell

Sili

con

Thin

Film

Sol

ar C

ell

With C

orr

ugat

ed S

ubst

rate

for

Effic

ient

With C

orr

ugat

ed S

ubst

rate

for

Effic

ient

Light

Tra

ppin

gLi

ght

Tra

ppin

gpp-- ii

-- n T

ype

Sola

r Cel

ln T

ype

Sola

r Cel

lLi

ght

Ray

Tra

vers

es h

undre

ds

of

mic

rons

Light

Ray

Tra

vers

es h

undre

ds

of

mic

rons

late

rally

though M

ultip

le I

nte

rnal

la

tera

lly t

hough M

ultip

le I

nte

rnal

Ref

lect

ion

Ref

lect

ion

Thin

Film

Sol

ar C

ell o

n Lo

w C

ost G

lass

or P

last

ic S

ubst

rate

59

59

60

60

Gro

wth

of E

pita

xial

sili

con

Alu

min

um

a-Si:

HAlu

min

um

Epitax

ial Si ac

tive

lay

er

Annea

l at

500°C

Met

allu

rgic

al G

rade

(100)

Cry

stal

line

Si

SEM

Im

age

b

No

cPr

otru

sion

s

Si fi

lm. T

he im

age

scal

e is

a

ryst

alliz

atio

n

SEM

imag

e of

the

300

nm th

ick

at: a

) 20

µm b

) 2 µ

m.

Ann

eale

d at

525

ºC fo

r 60

min

utes

61

61

Hig

h R

esol

utio

n X

-Sec

tiona

l TE

M

Subs

trat

e

Epita

xial

film

inte

rfac

e

a

The

inte

rfac

e be

twee

n th

e ep

itaxi

al fi

lm

and

the

(100

) sili

con

subs

trat

e

62

62

Hig

h R

esol

utio

n X

-Sec

tiona

l TE

M

b The

cent

er o

f the

epi

taxi

al fi

lm

63

63

Hig

h R

esol

utio

n X

-Sec

tiona

l TE

M

64

64

c

Epita

xial

film

the

epita

xial

sili

con

film

and

the

alum

inum

fil

m s

how

ing

the

epita

xial

cry

stal

pl

anes

of t

he fi

lm

The

inte

rfac

e be

twee

n

Al f

ilmth

ickn

ess.

thro

ugh

its e

ntire

Aug

er D

epth

Pro

files

65

65

Prof

ile T

ime=

0Pr

ofile

- Ti

me=

10m

in12

0(b

)

020406080

Atomic %100

120

020

040

060

080

010

0012

0014

00

Dept

h (n

m)

C O Al

Si

(a)

Dep

th (n

m)

20406080

Atomic %

020

040

060

080

010

0012

0014

00

Dep

th (n

m)

O Al

Atomic %

Dep

th (n

m)

Prof

ile -

Tim

e=15

min

020406080100

120

020

040

060

080

010

0012

0014

00

Dep

th (n

m)

Atomic %

O Al

Si

(c)

Prof

ile -

Tim

e=30

min

020406080100

120

020

040

060

080

010

0012

0014

00

Dep

th (n

m)

Atomic %O A

lS

i

(d)

Atomic %

100 0

Si

Alu

min

um In

duce

d A

lum

inum

Indu

ced

Cry

stal

lizat

ion

of a

Cry

stal

lizat

ion

of a

-- Si:H

Si:H

66

66

aa-- S

i:H

cry

stal

lized

to c

ontinuous

poly

Si:

H c

ryst

alliz

ed t

o c

ontinuous

poly

-- Si

Si

film

s at

150

film

s at

150-- 3

00

300°° C

; G

rain

Siz

e ~

0.5

C;

Gra

in S

ize

~ 0

.5 µµ

mmG

rain

Siz

e Ach

ieve

d ~

20

Gra

in S

ize

Ach

ieve

d ~

20-- 3

0

30 µµ

m a

t 300

m a

t 300--

450

450°° C

usi

ng a

1C u

sing a

1-- 3

nm

oxi

de

bar

rier

lay

er3 n

m o

xide

bar

rier

lay

erEpitax

ial Si film

is

pro

duce

d o

n (

100)

SX

Epitax

ial Si film

is

pro

duce

d o

n (

100)

SX

--Si at

400

Si at

400-- 5

50

550°° C

C

Annea

l 300-4

50°C

Annea

l 150-3

00°C

Annea

l 450-5

50°C

67

67

Sum

mar

y an

d C

oncl

usio

nsS

umm

ary

and

Con

clus

ions

Ener

gy

Nee

ds

of

the

World a

re I

ncr

easi

ng

Ener

gy

Nee

ds

of

the

World a

re I

ncr

easi

ng

Exp

onen

tial

lyExp

onen

tial

lySust

ainab

le E

ner

gy

Str

ongly

Sugges

t Sola

r Sust

ainab

le E

ner

gy

Str

ongly

Sugges

t Sola

r Ener

gy

to D

om

inat

e by

2100

Ener

gy

to D

om

inat

e by

2100

Sili

con is

the

Mat

eria

l of Choic

e in

Sola

r PV

Sili

con is

the

Mat

eria

l of Choic

e in

Sola

r PV

Thin

sili

con S

ola

r Cel

ls,

Low

Tem

per

ature

Thin

sili

con S

ola

r Cel

ls,

Low

Tem

per

ature

InIn

-- Lin

e Fa

brica

tion,

Low

Cost

Subst

rate

sLi

ne

Fabrica

tion,

Low

Cost

Subst

rate

sLo

w T

emper

ature

Cry

stal

lizat

ion o

f a

Low

Tem

per

ature

Cry

stal

lizat

ion o

f a-- S

i:H

Si:

H

has

Gre

at P

ote

ntial

has

Gre

at P

ote

ntial

Larg

e G

rain

Poly

Larg

e G

rain

Poly

-- Si an

d E

pitax

ial Si at

Low

Si an

d E

pitax

ial Si at

Low

Tem

per

ature

s hav

e bee

n D

emonst

rate

dTem

per

ature

s hav

e bee

n D

emonst

rate

d

68

68

Ack

now

ledg

emen

tA

ckno

wle

dgem

ent

We

ackn

ow

ledge

the

finan

cial

support

of th

e W

e ac

know

ledge

the

finan

cial

support

of th

e fo

llow

ing a

gen

cies

:fo

llow

ing a

gen

cies

:––

NASA (

HQ

)/Ark

ansa

s EPS

CoR

NASA (

HQ

)/Ark

ansa

s EPS

CoR

––N

ASA G

oddar

d/A

rkan

sas

Spac

e an

d P

lanet

ary

NASA G

oddar

d/A

rkan

sas

Spac

e an

d P

lanet

ary

Cen

ter

Cen

ter

––D

OE/A

rkan

sas

EPS

CoR

DO

E/A

rkan

sas

EPS

CoR

––N

atio

nal

Ren

ewab

le E

ner

gy

Lab (

NREL)

Nat

ional

Ren

ewab

le E

ner

gy

Lab (

NREL)

––O

ak R

idge

Nat

ional

Lab

(O

RN

L)O

ak R

idge

Nat

ional

Lab

(O

RN

L)––

South

ern U

niv

ersi

ties

Res

earc

h A

ssoci

atio

n

South

ern U

niv

ersi

ties

Res

earc

h A

ssoci

atio

n

(SU

RA)

(SU

RA)

––N

atio

nal

Cen

ter

for

Ele

ctro

n M

icro

scopy

(NCEM

)N

atio

nal

Cen

ter

for

Ele

ctro

n M

icro

scopy

(NCEM

)––

NSF

(USA)/

DST (

IND

IA)

NSF

(USA)/

DST (

IND

IA)

––Fu

lbri

ght

Inst

itute

Fulb

right

Inst

itute

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