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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18695

Title: Photoluminescence study and observation of unusual optical transitions in Cu2ZnSnSe4/CdS/ZnO solar cells
Authors: Oueslati, Souhaib
BRAMMERTZ, Guy
Buffiere, Marie
Koeble, Christine
Oualid, Touayar
MEURIS, Marc
POORTMANS, Jef
Issue Date: 2015
Publisher: ELSEVIER SCIENCE BV
Citation: SOLAR ENERGY MATERIALS AND SOLAR CELLS, 134, p. 340-345
Abstract: In this paper, we examine photoluminescence spectra (PL) of Cu2ZnSnSe4/CdS/ZnO solar cells, based on an absorber layer fabricated by selenization of sputtered Cu, Zn, Sn multilayers, via temperature-dependent and illumination power-dependent measurements. We observe anomalous emission behavior: the PL peak initially decreases with increasing temperature (red shift) in the temperature range 10-60 K, followed by a blue shift at higher temperature in the range 60-180 K. A recombination model is proposed that is able to explain both temperature dependent PL as well as power-dependent PL The important aspect of the proposed model is taking into account the presence of strong potential fluctuations in the absorber layer, which can also contribute to the low V-oc values generally observed in Cu2ZnSnSe4, based solar cells. (C) 2014 Elsevier B.V. All rights reserved.
Notes: [Oueslati, Souhaib] KACST Intel Consortium Ctr Excellence Nanomfg App, Riyadh, Saudi Arabia. [Oueslati, Souhaib; Brammertz, Guy; Buffiere, Marie; Meuris, Marc; Poortmans, Jef] IMEC Div IMOMEC Partner Solliance, B-3590 Diepenbeek, Belgium. [Oueslati, Souhaib; Brammertz, Guy; Buffiere, Marie; Meuris, Marc; Poortmans, Jef] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Oueslati, Souhaib; Oualid, Touayar] Univ Carthage, Natl Inst Appl Sci & Technol, Res Lab MMA, INSAT, Carthage, Tunisia. [Buffiere, Marie; Poortmans, Jef] Katholieke Univ Leuven, Dept Elect Engn, B-3001 Heverlee, Belgium. [Koeble, Christine] Helmholtz Zentrum Berlin Mat & Energie GmbH, D-14109 Berlin, Germany. [Oueslati, Souhaib; Brammertz, Guy; Buffiere, Marie; Koeble, Christine; Oualid, Touayar; Meuris, Marc; Poortmans, Jef] IMEC Partner Solliance, B-3001 Louvain, Belgium.
URI: http://hdl.handle.net/1942/18695
DOI: 10.1016/j.solmat.2014.10.041
ISI #: 000349728100043
ISSN: 0927-0248
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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