Challenging kesterite materials for photovoltaic applications
Mercredi 19 octobre 2016 10:30
- Duree : 1 heure
Lieu : Salle Belledonne - IMEP-LaHC, 3 Parvis Louis Neel, Bât. BCAi, Minatec
Orateur : Maarja GROSSBERG (Senior Research Scientist, Department of Materials Science, Tallinn University of Technology- Estonia)
Kesterite absorber materials (Cu2ZnSnS4, Cu2ZnSnSe4, Cu2ZnGeSe4 etc.) have been considered as promising low-cost and non-toxic materials for solar cells. Howev er, the intensive research conducted by many research groups over the last decade have come to a deadlock and in the last few years there is no efficiency improvement anymore, the highest solar cell efficiency so far is 12.6 % (CZTSSe), reported by IBM research group [1]. In Tallinn University of Technology we implement monograin layer solar cell concept and we have reached efficiencies of 9.3 % (CZTS). What are the main obstacles on the way to further efficiency improvement and what could be the solutions
?
[1] W. Wang, M.T. Winkler, O. Gunawan, T. Gokmen, T.K. Todorov, Y. Zhu, D.B. Mitzi, Device characteristics of CZTSSe Thin-Film Solar Cells With 12.6% Efficiency, Adv. Energy Mater. 4 (2013) 1301465.
[2] M. Kauk-Kuusik, K. Timmo, M. Danilson, M. Altosaar, M. Grossberg, K. Ernits. p–n junction improvements of Cu2ZnSnS4/CdS monograin layer solar cells. Applied Surface Science 357 (2015) 795−798.
http://imep-lahc.grenoble-inp.fr/seminars/exceptional-seminar-of-maarja-grossberg-848419.kjsp?RH=IMEP_FR
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