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Strategies for doped nanocrystalline silicon integration in silicon heterojunction solar cells
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SYSNO ASEP 0471531 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Strategies for doped nanocrystalline silicon integration in silicon heterojunction solar cells Author(s) Seif, J. (CH)
Descoeudres, A. (CH)
Nogay, G. (CH)
Hänni, S. (CH)
de Nicolas, S.M. (CH)
Holm, N. (CH)
Geissbühler, J. (CH)
Hessler-Wyser, A. (CH)
Duchamp, M. (DE)
Dunin-Borkowski, R.E. (DE)
Ledinský, Martin (FZU-D) RID, ORCID, SAI
De Wolf, S. (CH)
Ballif, C. (CH)Number of authors 13 Source Title IEEE Journal of Photovoltaics. - : Institute of Electrical and Electronics Engineers - ISSN 2156-3381
Roč. 6, č. 5 (2016), s. 1132-1140Number of pages 9 s. Language eng - English Country US - United States Keywords microcrystalline silicon ; nanocrystalline silicon ; silicon heterojunctions (SHJs) ; solar cells Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects LM2015087 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000388963600011 EID SCOPUS 84975298269 DOI 10.1109/JPHOTOV.2016.2571619 Annotation Carrier collection in silicon heterojunction (SHJ) solar cells is usually achieved by doped amorphous silicon layers of a few nanometers, deposited at opposite sides of the crystalline silicon wafer. These layers are often defect-rich, resulting in modest doping efficiencies, parasitic optical absorption when applied at the front of solar cells, and high contact resistivities with the adjacent transparent electrodes. Their substitution by equally thin doped nanocrystalline silicon layers has often been argued to resolve these drawbacks. However, low-temperature deposition of highly crystalline doped layers of such thickness on amorphous surfaces demands sophisticated deposition engineering. In this paper, we review and discuss different strategies to facilitate the nucleation of nanocrystalline silicon layers and assess their compatibility with SHJ solar cell fabrication. We also implement the obtained layers into devices, yielding solar cells with fill factor values of over 79% and efficiencies of over 21.1%, clearly underlining the promise this material holds for SHJ solar cell applications. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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