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Microcrystalline silicon and the impact on micromorph tandem solar cells
Auteur(s)
Meier, Johannes
Dubail, S.
Golay, S.
Kroll, U.
Faÿ, Sylvie
Vallat-Sauvain, Evelyne
Feitknecht, Luc
Dubail, J.
Shah, Arvind
Date de parution
2002
In
Solar Energy Materials and Solar Cells, Elsevier, 2002/74/1-4/457-467
Résumé
Intrinsic microcrystalline silicon opens up new ways for silicon thin-film multi-junction solar cells, the most promising being the “micromorph” tandem concept. The microstructure of entirely microcrystalline p–i–n solar cells is investigated by transmission electron microscopy. By applying low pressure chemical vapor deposition ZnO as front TCO in p–i–n configurated micromorph tandems, a remarkable reduction of the microcrystalline bottom cell thickness is achieved. Micromorph tandem cells with high open circuit voltages of 1.413 V could be accomplished. A stabilized efficiency of around 11% is estimated for micromorph tandems consisting of 2 μm thick bottom cells. Applying the monolithic series connection, a micromorph module (23.3 cm<sup>2</sup>) of 9.1% stabilized efficiency could be obtained.
Identifiants
Type de publication
journal article
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