Photoluminescence of the Cu2ZnSnSe4 Highly Compensated Compound with Kesterite Structure
Abstract
Based on the photoluminescence (PL) and PL excitation spectra of the Cu2ZnSnSe4 thin film compound with the kesterite structure the optical width of the direct band gap was determined to be Eg ≈ 1.052 eV at the temperature of 6 K. In the temperature range of 6–300 K the mechanisms of radiative recombination of nonequilibrium charge carriers were established. These mechanisms determine the appearance of wide PL bands in the energy region of 0.7–1.1 eV. For the direct-gap compound Cu2ZnSnSe4 with p-type conductivity the effect of redistribution of the intensity between radiative recombination channels in the spectral region of 0.93–0.99 eV was detected, indicating the presence of deep acceptor and donor levels in the band gap. Based on the data on the intensity quenching of broad PL bands in the energy range of 0.7—1.0 eV the thermal activation energy of nonradiative recombination channels involving structural defects was determined and
their nature was discussed.
About the Authors
V. D. ZhivulkoBelarus
Minsk
A. V. Mudryi
Belarus
Minsk
O. M. Borodavchenko
Belarus
Minsk
K. V. Usenko
Belarus
Minsk
E. V. Lutsenko
Belarus
Minsk
V. N. Pavlovskii
Belarus
Minsk
G. P. Yablonskii
Belarus
Minsk
M. V. Yakushev
Russian Federation
Ekaterinburg; UK; Glasgow
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Review
For citations:
Zhivulko V.D., Mudryi A.V., Borodavchenko O.M., Usenko K.V., Lutsenko E.V., Pavlovskii V.N., Yablonskii G.P., Yakushev M.V. Photoluminescence of the Cu2ZnSnSe4 Highly Compensated Compound with Kesterite Structure. Zhurnal Prikladnoii Spektroskopii. 2026;93(3):377-385. (In Russ.)
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