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.
- solar cells
Yakushev, M. V., Márquez-Prieto, J., Forbes, I., Edwards, P. R., Zhivulko, V. D., Mudryi, A. V., ... Martin, R. W. (2015). Radiative recombination in Cu2ZnSnSe4 thin films with Cu deficiency and Zn excess. Journal of Physics D: Applied Physics, 48(47), . https://doi.org/10.1088/0022-3727/48/47/475109