期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 248, 期 9, 页码 2170-2174出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201046477
关键词
kesterites; Cu2ZnSnS4; Raman spectra
资金
- University of Utah Technology Commercialization Office
This temperature-dependent Raman study of kesterite phase Cu2ZnSnS4 (CZTS) thin film was performed over the temperature range 98-378 K. A detailed qualitative analysis showed that the Raman data for the A mode of vibration, the strongest peak for kesterite CZTS films, fit very well to a damped harmonic oscillator (DHO) model. This investigation of temperature-dependent Raman data shows that the observed frequency shift is due to the cumulative effect of thermal expansion and anharmonicity resulting from a 4-phonon damping process. The temperature dependence of linewidth is also consistent with the above analysis. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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