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.
Original language | English |
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Article number | 475109 |
Journal | Journal of Physics D: Applied Physics |
Volume | 48 |
Issue number | 47 |
Early online date | 2 Nov 2015 |
DOIs | |
Publication status | Published - 2 Dec 2015 |