期刊
PHYSICA B-CONDENSED MATTER
卷 405, 期 15, 页码 3186-3189出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physb.2010.04.041
关键词
Cu2ZnSnSe4; Solar cell; Temperature dependence; Monograin powder; Quantum efficiency curves
资金
- Estonian Science Foundation [G-8282]
- HTM (Estonia) [SF0140099s08]
A new method to study spatial potential fluctuations in compensated absorber materials used in solar cells is introduced. The method is based on the analysis of the temperature dependence of quantum efficiency curves in solar cells. As an example Cu2ZnSnSe4 monograin solar cell is studied at temperatures T=10-300 K. It is shown that this absorber material has spatial potential fluctuations with an average energetic depth of 25 meV. The room temperature bandgap energy of Cu2ZnSnSe4 is found to be E-g=1.017 eV. (C) 2010 Elsevier B.V. All rights reserved.
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