Radiative recombination in Cu2ZnSnSe4 thin films with Cu deficiency and Zn excess

Yakushev, Michael, Márquez-Prieto, Jose, Forbes, Ian, Edwards, Paul, Zhivulko, V.D., Mudryi, Alexandre, Krustok, Jüri and Martin, Robert (2015) Radiative recombination in Cu2ZnSnSe4 thin films with Cu deficiency and Zn excess. Journal of Physics D: Applied Physics, 48 (47). ISSN 0022-3727

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Official URL: http://dx.doi.org/10.1088/0022-3727/48/47/475109

Abstract

Thin films of Cu2ZnSnSe4 (CZTSe) with copper deficiency and zinc excess were fabricated at Northumbria University by the selenisation of metallic precursors deposited on Mo/glass and bare glass substrates. Absorption and photoluminescence (PL) measurements were used to examine the film on glass whereas films on Mo/glass were used to produce a solar cell with efficiency of 8.1%. Detailed temperature and excitation intensity analysis of PL spectra allows identification of the main recombination mechanisms as band-to-tail and band-to-band transitions. The latter transition was observed in the spectra from 6 to 300 K.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Nicola King
Date Deposited: 26 Nov 2015 15:34
Last Modified: 03 Nov 2016 16:00
URI: http://nrl.northumbria.ac.uk/id/eprint/24770

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