期刊
THIN SOLID FILMS
卷 582, 期 -, 页码 162-165出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2014.10.069
关键词
Copper zinc tin sulfide; Solar cells; Temperature effect; Current transport; Serial resistance; Quantum efficiency; Current-voltage characteristics; Impedance spectroscopy
类别
资金
- Estonian Science Foundation [ETF 9369, ETF 9425, ETF 9346]
- Estonian Ministry of Education and Research [IUT 19-28]
- Estonian Centre of Excellence in Research [TK117]
- National R&D program Energy [AR10128]
- Estonian Material Technology Programme [AR12128]
- national scholarship program Kristjan Jaak [16-3.3/351]
- Archimedes Foundation
- Ministry of Education and Research
Quaternary semiconductor compound Cu2ZnSnS4 (CZTS) is a promising non-toxic absorber material for solar cells made from earth abundant elements. In this study temperature dependencies (T = 10-300 K) of current-voltage (J-V) characteristics and external quantum efficiency (EQE) spectra of CZTS monograin layer solar cells were measured in order to clarify current transport in CZTS that is still not fully understood. Three different temperature ranges can be distinguished from the temperature dependence of the series resistance (R-s) obtained from J-V measurements and the effective bandgap energy (E-g*) determined from the EQE spectra. Thermally activated conductivity, Mott's variable-range hopping conductivity, and very low temperature (<40 K) blocking of the interface recombination were observed. (C) 2014 Elsevier B.V. All rights reserved.
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