红外与毫米波学报, 2015, 34 (2): 129, 网络出版: 2015-05-20
溶胶凝胶非硫化法制备铜锌锡硫薄膜
Cu2ZnSnS4 films fabricated by a simple sol-gel process without sulfurization
溶胶-凝胶 铜锌锡硫 薄膜 前驱体 预退火 后退火 组分 sol-gel Cu2ZnSnS4(CZTS) film precursor pre-anneal post-anneal composition
摘要
采用溶胶-凝胶非硫化方法制备了表面平整、致密的铜锌锡硫薄膜.XRD及Raman分析表明制备的铜锌锡硫薄膜为锌黄锡矿结构.能谱分析表明所有薄膜均贫铜富锌贫硫.场发射扫描电子显微镜测得薄膜的厚度在0.7μm左右.透射光谱表明随后退火温度的提高薄膜的光学带隙从2.13eV减小到1.52eV.
Abstract
Cu2ZnSnS4 (CZTS) films with a smooth and compact morphology were obtained via a sol-gel process. Raman spectra and X-ray diffraction (XRD) results indicate that all the films have the kesterite structure. Energy dispersive X-ray spectroscopy (EDS) suggests that all of CZTS films are of S-deficient, Cu-poor and Zn-rich states. The thickness of all the films is around 0.7μm measured by a field emission scanning electron microscope (FE-SEM). Transmission spectra reveal that the optical band gap (Eg) of samples reduces from 2.13 to 1.52eV as post-annealing temperature goes up.
张克智, 何俊, 王伟君, 孙琳, 杨平雄, 褚君浩. 溶胶凝胶非硫化法制备铜锌锡硫薄膜[J]. 红外与毫米波学报, 2015, 34(2): 129. ZHANG Ke-Zhi, HE Jun, WANG Wei-Jun, SUN Lin, YANG Ping-Xiong, CHU Jun-Hao. Cu2ZnSnS4 films fabricated by a simple sol-gel process without sulfurization[J]. Journal of Infrared and Millimeter Waves, 2015, 34(2): 129.
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