Hahn-Meitner Institut Berlin
Intermediate band solar cells based on I-III-VI2 compounds
Project team
Dr. R. Scheer
Dr. Th. Unold
PhD
Lars Steinkopf (Technician)
Hahn-Meitner-Institut Berlin, Department Prof. Schock
Hahn-Meitner Institut Berlin
NeutronsNeutrons Photons Photons
thin films
Technologies
new concepts
Analytics
Solar energie researchPhotovoltaics + (Photo)elektrocatalysis Structur and dynamics of condensed matter
Structural research
Hahn-Meitner-Institut Berlin
Hahn-Meitner Institut Berlin
3.5
3.0
2.5
2.0
1.5
1.0
Ba
nd
Gap
[e
V]
5.85.75.65.55.45.3Lattice Parameter [Å]
CuInSe2
CuGaSe2
CuAlSe2
CuInS2
CuGaS2
CuAlS2
Cu(In,Ga,Al)(S,Se)2 solid solution system
0 %
10%
20%
30%
Efficiency
Hahn-Meitner Institut Berlin
Calculated efficiency limits
Hahn-Meitner Institut Berlin
Absorber Growth
CuS Ga
In
Simultaneous
Sequential
Metal
Metal
Hahn-Meitner Institut Berlin
SE3 Clustertool
• Sputtering
• Evaporation
• Reaction
• Real time analysis
• XRF analysis
Hahn-Meitner Institut Berlin
Cu(In,Ga)S2 : Metal
Molybdän
Substrat
ZnO
Buffer
Cell Design
Hahn-Meitner Institut Berlin
6 months plan
• Establishment of Cu(In,Ga)S2 baseline with Eg>1.8 eV by quasi-simultaneous deposition
• Selection of first transition element
• Material and device characterisation
• M2.1 First deposition test of thin film material with transition element