期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 150, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2020.109819
关键词
Cu2ZnSnS4; Triple axis spectroscopy; Inelastic neutron scattering; Phonons; Thermoelectric
资金
- BARC-SPPU MoU
- Indian National Science Academy
Cu2ZnSnS4 is a promising p-type semiconductor for thin film solar cells, with good thermal and thermoelectric properties demonstrated in research studies.
Cu2ZnSnS4 is a p-type semiconductor that has been seen as a possible replacement for SnSe, Cu (In,Ga)Se-2 etc. in thin film solar cells, due to non-toxicity and natural abundance of their constituent elements. Polycrystalline Cu2ZnSnS4 samples (kesterite-type) were synthesized by a microwave assisted method and investigated by inelastic neutron scattering. The experimentally measured neutron-weighted phonon density of states compares reasonably well with that estimated by a computation of the lattice dynamics. These studies are then extended to elucidate the understanding of the thermal, elastic and thermoelectric properties. The lattice-dynamics calculations are able to reproduce the temperature dependence of the thermal conductivity and the thermoelectric figure of merit, as observed in experiments previously.
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