Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102269
Title: Impact of the selenisation temperature on the structural and optical properties of CZTSe absorbers
Authors: Márquez-Prieto, J.
Yakushev, M. V.
Forbes, I.
Krustok, J.
Edwards, P. R.
Zhivulko, V. D.
Borodavchenko, O. M.
Mudryi, A. V.
Dimitrievska, M.
Izquerdo-Roca, V.
Pearsall, N. M.
Martin, R. W.
Issue Date: 2016
Publisher: Elsevier B.V.
Citation: Impact of the selenisation temperature on the structural and optical properties of CZTSe absorbers / J. Márquez-Prieto, M. V. Yakushev, I. Forbes, et al. — DOI 10.1016/j.solmat.2016.03.018 // Solar Energy Materials and Solar Cells. — 2016. — Vol. 152. — P. 42-50.
Abstract: We present structural and optical spectroscopy studies of thin films of Cu2ZnSnSe4 (CZTSe) with strong copper deficiency deposited on Mo/Glass substrates and selenised at 450, 500 or 550°C. Solar cells fabricated from these films demonstrated efficiencies up to 7.4% for selenisation at 500°C. Structural analysis based on X-ray diffraction and Raman spectroscopy revealed the presence of SnSe2 in the film selenised at 450°C but not in the films selenised at higher temperatures. A progressive decrease of the Sn and Se content was observed as the selenisation temperature increased. Photoluminescence excitation was used to determine the bandgaps at 4.2 K. Detailed measurements of the temperature and excitation intensity dependencies of the photoluminescence spectra allow the recombination mechanisms of the observed emission bands to be identified as band-to-impurity and band-to-band transitions, and their evolution with selenisation temperature changes to be analysed. The strongest band-to-band transition is recorded in the PL spectra of the film selenised at 500°C and can be observed from 6 K to room temperature. The compositional and structural changes in the films and their influence on the optoelectronic properties of CZTSe and solar cells are discussed. © 2016 Elsevier B.V. All rights reserved.
Keywords: CU2ZNSNSE4
OPTICAL SPECTROSCOPY
SELENISATION
STRUCTURE
COPPER COMPOUNDS
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
SOLAR CELLS
STRUCTURE (COMPOSITION)
THIN FILMS
TIN COMPOUNDS
X RAY DIFFRACTION
ZINC COMPOUNDS
CU2ZNSNSE4
OPTICAL SPECTROSCOPY
OPTOELECTRONIC PROPERTIES
PHOTO-LUMINESCENCE EXCITATION
PHOTOLUMINESCENCE SPECTRUM
RECOMBINATION MECHANISMS
SELENISATION
STRUCTURAL AND OPTICAL PROPERTIES
SELENIUM COMPOUNDS
URI: http://hdl.handle.net/10995/102269
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84962739094
PURE ID: 785321
cd337825-7742-4be7-a85f-32bf4244328e
ISSN: 9270248
DOI: 10.1016/j.solmat.2016.03.018
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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