Optical properties of amorphous and polycrystalline Sb2Se3 thin films prepared by thermal evaporation
Optical properties of amorphous and polycrystalline Sb2Se3 thin films prepared by thermal evaporation
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DOI：
10.1063/1.4927741
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发表时间：
2015-07-27
影响因子：
4
通讯作者：
Tang, Jiang
中科院分区：
文献类型：
--
作者：
Chen, Chao;Li, Weiqi;Tang, Jiang
Sb2Se3因其具有有吸引力的材料、光学和电学特性而成为一种非常有前途的光伏材料。最近，我们报道了一种超级 CdS/Sb2Se3 太阳能电池，其认证效率为 5.6%。在这封信中，我们重点研究了热蒸发制备的非晶和多晶 Sb2Se3 薄膜的光学性能。使用温度相关的透射光谱和温度相关的光致发光，获得了作为温度函数的间接光学跃迁性质和带隙值。使用椭圆光度测量和 Swanepoel 包络法，获得了 193-2615nm 宽波长范围内的折射率和介电常数。这些工作为Sb2Se3薄膜太阳能电池的进一步发展奠定了基础。 (C) 2015 AIP 出版有限责任公司。
Sb2Se3 is a very promising photovoltaic material because of its attractive material, optical and electrical properties. Very recently, we reported a superstrate CdS/Sb2Se3 solar cell with 5.6% certified efficiency. In this letter, we focused on the optical properties of amorphous and polycrystalline Sb2Se3 thin films prepared by thermal evaporation. Using temperature dependent transmission spectrum and temperature dependent photoluminescence, the indirect optical transition nature and bandgap values as functions of temperature were acquired. Using ellipsometry measurements and Swanepoel's envelope method, the refractive indices as well as the dielectric constant in a wide wavelength range of 193-2615nm were obtained. These works would lay the foundation for the further development of Sb2Se3 thin film solar cells. (C) 2015 AIP Publishing LLC.