Solar cells, defects and recombination – news from CIGS
After a short introduction to thin film solar cells, I will review what we know about defects in Cu(InGa)Se2 (CIGS), where we found significant differences between Cu-rich and Cu-poor material. By photoluminescence we recently found fundamental differences between pure CIS and Ga containing CIGS: with Ga the recombination is higher in Cu-rich material. And high Ga content CIGS shows a deep defect which gets more and more shallow when we decrease the Ga content. Finally, I will show that we can use photoluminescence to characterise the tails states in kesterite.
Prof. Dr. S. Siebentritt
Universite du Luxembourg
Faculté des Sciences, de la Technologie et de la Communication
Laboratory for photovoltaics
41, rue du Brill
L-4422 Belvaux
Luxembourg
| Phone | +352 46 66 44 6304 |
| Fax | +352 46 66 44 6602 |
| Prof. Dr. S. Siebentritt | |
| Http | Physique et Matériaux |