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

Yakushev, Michael, Marquez 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 > Mathematics, Physics and Electrical Engineering
Depositing User: Nicola King
Date Deposited: 26 Nov 2015 15:34
Last Modified: 18 Feb 2019 12:17
URI: http://nrl.northumbria.ac.uk/id/eprint/24770

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