Refractive indices of layers and optical simulations of Cu(In,Ga)Se2 solar cells

Autor:	Romain Carron, Enrico Avancini, Thomas Feurer, Benjamin Bissig, Paolo A. Losio, Renato Figi, Claudia Schreiner, Melanie Bürki, Emilie Bourgeois, Zdenek Remes, Milos Nesladek, Stephan Buecheler, Ayodhya N. Tiwari
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Cu(In Ga)Se2 refractive index optical simulations thin films solar cells absorption losses carrier collection losses optical losses Materials of engineering and construction. Mechanics of materials TA401-492 Biotechnology TP248.13-248.65
Zdroj:	Science and Technology of Advanced Materials, Vol 19, Iss 1, Pp 396-410 (2018)
Druh dokumentu:	article
ISSN:	1468-6996 1878-5514 14686996
DOI:	10.1080/14686996.2018.1458579
Popis:	Cu(In,Ga)Se2 -based solar cells have reached efficiencies close to 23%. Further knowledge-driven improvements require accurate determination of the material properties. Here, we present refractive indices for all layers in Cu(In,Ga)Se2 solar cells with high efficiency. The optical bandgap of Cu(In,Ga)Se2 does not depend on the Cu content in the explored composition range, while the absorption coefficient value is primarily determined by the Cu content. An expression for the absorption spectrum is proposed, with Ga and Cu compositions as parameters. This set of parameters allows accurate device simulations to understand remaining absorption and carrier collection losses and develop strategies to improve performances.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/ab7e9cc8e2d84dc78f6d6304652e923e Zobrazit plný text záznamu View record in DOAJ