| 预制层结构对CZTS薄膜微观组织和光学性能的影响 |
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| 引用本文： | 李伟,王玉伟.预制层结构对CZTS薄膜微观组织和光学性能的影响[J].上海理工大学学报,2016,37(3):72-77. |
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| 作者姓名： | 李伟 王玉伟 |
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| 作者单位： | 上海理工大学 材料科学与工程学院, 上海 200093;上海理工大学 材料科学与工程学院, 上海 200093 |
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| 基金项目： | 国家自然科学基金（51471110）；高性能陶瓷和超微结构国家重点实验室开放课题基金（SKL201402SIC） |
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| 摘 要： | 研究了叠层顺序对磁控溅射沉积铜锌锡硫（CZTS）吸收层的微观结构、表面形貌和光学性能的影响.试验结果表明：当预制层结构为Cu/ZnS/SnS2时，制备的CZTS薄膜在（112）晶面具有择优生长取向，并具有较好的结晶一致性，在288，335和368 cm-1处呈现出特征拉曼（Raman）峰，薄膜表面晶粒较大、形状规则、薄膜空隙较少、比较致密，可见光范围内的吸收系数较高，光学带隙1.5 eV，适合作为CZTS薄膜太阳能电池的吸收层；当预制层结构为SnS2/Cu/ZnS和ZnS/SnS2/Cu时，由于在预制层硫化过程中造成一定的Zn和Sn流失，使CZTS薄膜中含有CuS杂相，导致薄膜表面质量下降，禁带宽度增加，不适合做CZTS薄膜太阳能电池的吸收层.
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| 关 键 词： | CZTS薄膜 预制层结构 微观组织 光学性能 |
| 收稿时间： | 2015/4/30 0:00:00 |
Effect of Precursor Layer Structure on Microstructure and Optical Property of CZTS Film |
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| LI Wei and WANG Yuwei.Effect of Precursor Layer Structure on Microstructure and Optical Property of CZTS Film[J].Journal of University of Shanghai For Science and Technology,2016,37(3):72-77. |
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| Authors: | LI Wei and WANG Yuwei |
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| Institution: | School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | The effect of the stacking sequence of precursor layer on microstructure,surface morphology and optical properties of CuZnSnS(CZTS) film was studied in this paper.The results show that CZTS film prefabricated by precursor layer structure of Cu/ZnS/SnS2 presents(112) preferential growth,good crystallization consistency,big and regular grains,high compactness with 288,335 and 368 cm-1 Raman peaks,high visible light absorption coefficient and the optical band gap of 1.5 eV,which is suitable for the absorption layer of CZTS thin film solar cell.When prefabricated by precursor layer structures of SnS2/Cu/ZnS and ZnS/SnS2/Cu,CZTS film contains CuS impurity phase due to the loss of Zn and Sn during sulfuration,leading to deterioration of surface quality and increase of band gap,which is not suitable for the absorption layer of CZTS solar cell. |
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| Keywords: | CZTS film precursor layer structure microstructure optical property |
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