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Vermang, B., Brammertz, G., Meuris, M., Schnabel, T., Ahlswede, E., Choubrac, L., Harel, S., Cardinaud, C., Arzel, L., Barreau, N., van Deelen, J., Bolt, P.-J. & Bras, P. (2019) Wide band gap kesterite absorbers for thin film solar cells: potential and challenges for their deployment in tandem devices. Sustainable Energy & Fuels, 3 2246–2259. 
Added by: Richard Baschera (2019-09-18 08:09:16)   Last edited by: Richard Baschera (2019-09-18 08:16:49)
Type de référence: Article
DOI: 10.1039/c9se00266a
Numéro d'identification (ISBN etc.): WOS:000482057500004
Clé BibTeX: Vermang2019
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Créateurs: Ahlswede, Arzel, Barreau, Bolt, Brammertz, Bras, Cardinaud, Choubrac, Harel, Meuris, Schnabel, van Deelen, Vermang
Éditeur: Royal Society of Chemistry (UK)
Collection: Sustainable Energy & Fuels
Consultations : 3/309
Indice de consultation : 4%
Indice de popularité : 1%
This work reports on developments in the field of wide band gap Cu2ZnXY4 (with X = Sn, Si or Ge, and Y = S, Se) kesterite thin film solar cells. An overview on recent developments and the current understanding of wide band gap kesterite absorber layers, alternative buffer layers, and suitable transparent back contacts is presented. Cu2ZnGe(S,Se)(4) absorbers with absorber band gaps up to 1.7 eV have been successfully developed and integrated into solar cells. Combining a CdS buffer layer prepared by an optimized chemical bath deposition process with a 1.36 eV band gap absorber resulted in a record Cu2ZnGeSe4 cell efficiency of 7.6%, while the highest open-circuit voltage of 730 mV could be obtained for a 1.54 eV band gap absorber and a Zn(O,S) buffer layer. Employing InZnOx or TiO2 protective top layers on SnO2:In transparent back contacts yields 85-90% of the solar cell performance of reference cells (with Mo back contact). These advances show the potential as well as the challenges of wide band gap kesterites for future applications in high-efficiency and low-cost tandem photovoltaic devices.
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