Print Email Facebook Twitter The role of oxide interlayers in back reflector configurations for amorphous silicon solar cells Title The role of oxide interlayers in back reflector configurations for amorphous silicon solar cells Author Demontis, V. Sanna, C. Melskens, J. Santbergen, R. Smets, A.H.M. Damiano, A. Zeman, M. Faculty Electrical Engineering, Mathematics and Computer Science Department Electrical Sustainable Energy Date 2013-02-13 Abstract Thin oxide interlayers are commonly added to the back reflector of thin-film silicon solar cells to increase their current. To gain more insight in the enhancement mechanism, we tested different back reflector designs consisting of aluminium-doped zinc oxide (ZnO:Al) and/or hydrogenated silicon oxide (SiOx:H) interlayers with different metals (silver, aluminium, and chromium) in standard p-i-n a-Si:H solar cells. We use a unique inverse modeling approach to show that in most back reflectors the internal metal reflectance is lower than expected theoretically. However, the metal reflectance is increased by the addition of an oxide interlayer. Our experiments demonstrate that SiOx:H forms an interesting alternative interlayer because unlike the more commonly used ZnO:Al it can be deposited by plasma-enhanced chemical vapour deposition and it does not reduce the fill factor. The largest efficiency enhancement is obtained with a double interlayer of SiOx:H and ZnO:Al. Subject aluminiuminverse problemsplasma CVDsiliconsolar cellszinc compounds To reference this document use: http://resolver.tudelft.nl/uuid:c07d8cb6-62e9-4657-bc6e-eafb966a7733 DOI https://doi.org/10.1063/1.4790875 Publisher American Institute of Physics ISSN 0021-8979 Source https://doi.org/10.1063/1.4790875 Source Journal of Applied Physics, 113 (6), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 American Institute of Physics Files PDF Melskens_2013.pdf 846.52 KB Close viewer /islandora/object/uuid%3Ac07d8cb6-62e9-4657-bc6e-eafb966a7733/datastream/OBJ/view