论文部分内容阅读
四元化合物半导体铜锌锡硫(Cu2Zn Sn S4,CZTS)由于其四种组成元素在地壳中丰度非常高且安全无毒,因而成本低廉。CZTS作为直接带隙半导体材料,其吸收光谱与太阳辐射光谱匹配性好、光吸收系数高,具有结构与性质可调可控、光电性能优异等优势,是发展绿色、低成本、高效率和稳定薄膜太阳电池的理想核心材料。近年来,国内外研究者对CZTS的结构与性质、制备工艺、应用尤其是通过结构、成分的调控提高其光电转换效率等方面进行了广泛的研究和探讨。本文对CZTS的结构演变、制备工艺、光电性质与应用等进行综述,重点分析了晶体结构、缺陷、表面与界面、合金化等因素对其光伏性能的影响。同时,对CZTS作为新型能量转换材料在光催化和热电等领域的应用进行了探讨。最后对CZTS目前存在的挑战和今后的研究重点进行总结并展望了将来可能的突破方向。
Quaternary compound semiconductors Copper, zinc, tin and tin (Cu2Zn Sn S4, CZTS) are inexpensive because of their abundance in the earth’s crust, which is safe and nontoxic. As a direct band gap semiconductor material, CZTS has the advantages of good matching between absorption spectrum and solar radiation spectrum, high light absorption coefficient, adjustable structure and property, excellent photoelectric property, etc. It is a promising technology to develop green, low cost, high efficiency and stability Thin film solar cells ideal core material. In recent years, researchers at home and abroad have conducted extensive research and discussion on the structure and properties of CZTS, preparation techniques and applications, especially the control of the structure and composition to improve the photoelectric conversion efficiency. In this paper, the structural evolution, preparation technology, optoelectronic properties and application of CZTS are reviewed. The effects of crystal structure, defects, surface and interface, alloying and other factors on the photovoltaic performance are analyzed. At the same time, the application of CZTS as a new type of energy conversion material in the fields of photocatalysis and thermoelectricity is discussed. Finally, the author summarizes the current challenges of CZTS and the research priorities in the future and looks forward to possible future breakthroughs.