ARTIFICIAL PHOTOSYNTHESIS

(MARRIAGE OF NATURE & ELECTRONICS)

BY, D.J.PRADEEP(11G2A04321)

AUDISANKARA COLLEGE OF ENGINEERING & TECHNOLOGY, Gudur.

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

A Technical Seminar On

» Things as possible as that can produce powerare :

Tide, Wind, Water, Sun, Nuclear,

Coal,

Garbage, terrestrial heat,

Diesel,

etc…

ARTIFICIAL LEAF

Introduction

NOW

As crude oil prices rise again, research is once again focusing on converting solar energy into fuels. 

Pollution is increasing day-by-day by increasing of vehicles on road.

To reduce use of fossil fuel, to save nature we are using artificial photosynthesis which uses sun and some low cost materials as fuels and produce energy in form of hydrogen & oxygen.

Why we use ARTIFICIAL LEAF

“ Artificial leaf “ is Like living leaves, this device can turn the energy of sunlight directly into a chemical fuel that can be stored and used later as an energy source.

Artificial leaf

When artificial leaf placed in a container of water and exposed to sunlight it quickly begins to

generate streams of bubbles: oxygen bubbles from one side and hydrogen bubbles from the other.

The two streams of bubbles can be collected and stored and used later to deliver power.

The device is made entirely of earth

-

abundant , inexpensive materials mostly silicon, cobalt and nickel.

Working

1. Stainless steel plate of the size of a playing card is base

2. Amorphous Silicon-Germanium alloy junction and

amorphous silicon on the stainless steel plate.

3. The lit side of the plate : layer of Indium-Tin Oxide.

4. The Cobalt-OEC is deposited the Indium -Tin Oxide layer.

5. Nickel-Molybdenum-Zinc alloy is deposited on other side

6. This plate is then submerged in a container of water and illuminated by sunlight

Construction

Structure

Fabricating or Manufacturing

Antenna structure that captures the light (similar to a solar panel), and already coat it with the artificial material that would replace the chlorophyll.

Organic photovoltaic mimicking chlorophyll would need to be “painted” on in thin layers onto these antennas.

By hydrolysis , in the presence of sun light & water ,we get oxygen & hydrogen separately.

Apart of producing oxygen like natural leaf, the artificial leaf also produces hydrogen too.

Therefore, in this way manufacturing of “ARTIFICIAL LEAF” is done.

Fabricating Materials

Cobalt. Nickel. Molybdenum. Zinc. Silicon & Stainless steel.

• Where these material are abundant in nature & low cost, so we can say fabricating cost is less . It is more economic & efficient.

Generation of power. Electronic uses. Fuel for hybrid vehicles. Medical fields. Industrial uses. Nano technology. Energy conservation purposes.

Applications

Home will be a power & gas station

» H2 can then be stored and either burned or run through a fuel cell to generate electricity.

» It can store energy in the chemical form that is the

great advantage of this device over the solar panal which we use now a day.

» It is inexpensive as the materials are abundant.

Advantages

» safe storing of hydrogen gas. » Freezing in sub zero temperatures. » The efficiency needs to be improved. » For high performance, the cost due to

huge silicon solar cell increases.

Disadvantages

Research is undergoing

To reduce the cost of this leaf NOCERA LAB is working on reducing the amount of silicon used in this artificial leaf and is also looking to scale-up production.

NOCERA lab is working with Roy Gordon’s group to use chemical vapour deposition to coat flexible silicon on leaf, or even depositing the semiconductor as well

Our goal is to make each home its own power station. One can envision villages in India and other countries

not long from now purchasing an affordable basic power system based on this technology.

Conclusion

References

www.mapageweb.com www.eere.energy.gov/solar/

photovoltaics.html www.abc.net.au/rn/science/buzz/

stories.html www.futurehi.net/archieves/000159.html www.geocites.com/flipy_nicki.html www.ioffe.rssi.com www.personal.rdg.ac.uk www.vafps.org/e-commercefuzzy.html