Nanostructured three-dimensional thin film silicon solar cells with very high efficiency potential

0364090 - FZÚ 2012 RIV US eng J - Journal Article
Vaněček, Milan - Babchenko, Oleg - Purkrt, Adam - Holovský, Jakub - Neykova, Neda - Poruba, Aleš - Remeš, Zdeněk - Meier, J. - Kroll, U.
Nanostructured three-dimensional thin film silicon solar cells with very high efficiency potential.
Applied Physics Letters. Roč. 98, č. 16 (2011), , "163503-1"-"163503-3". ISSN 0003-6951. E-ISSN 1077-3118
R&D Projects: GA ČR(CZ) GAP108/11/0937; GA MŠMT(CZ) 7E09057
EU Projects: European Commission(XE) 214134 - N2P
Institutional research plan: CEZ:AV0Z10100521
Keywords : solar cells * ZnO * amorphous silicon
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.844, year: 2011

We report on the experimental realization of amorphous/microcrystalline silicon tandem solar cells (Micromorph) based on our three-dimensional design. An enhancement is reached in the short-circuit current by 40%, with an excellent open-circuit voltage of 1.41V and a fill factor of 72%. We have used nanoholes or microholes dry etched into the ZnO front contact layer. Monte Carlo optical modeling shows that stable efficiency of amorphous silicon p-i n solar cells in over 12% range is possible. For the Micromorph cells, efficiency over 15% with the thickness of amorphous Si below 200 nm and of microcrystalline Si around 500 nm is possible.
Permanent Link: http://hdl.handle.net/11104/0199662