Surface Engineering of ZnO Thin Film for High Efficiency Planar Perovskite Solar Cells.
Surface Engineering of ZnO Thin Film for High Efficiency Planar Perovskite Solar Cells.
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DOI：
10.1038/srep13211
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发表时间：
2015-09-28
影响因子：
4.6
通讯作者：
Wu CG
中科院分区：
文献类型：
--
作者：
Tseng ZL;Chiang CH;Wu CG
采用两步旋涂法制备了高质量的CH3NH3PbI3吸收剂，并将溅射法制备的ZnO薄膜用作平板钙钛矿太阳能电池的电子传输层。在AM 1.5G辐照下，以Ar为工作气体制备的ZnO薄膜为基片的电池效率达到15.9%。溅射室的气氛可以调节所得ZnO薄膜的表面电子性质（能带结构），从而调节相应钙钛矿太阳能电池的光伏性能。精确的ZnO薄膜表面工程是制备高功率转换效率的ZnO基规则平面钙钛矿太阳能电池的关键步骤之一。溅射法是制备性能可控的ZnO薄膜的优良技术之一。
Sputtering made ZnO thin film was used as an electron-transport layer in a regular planar perovskite solar cell based on high quality CH3NH3PbI3 absorber prepared with a two-step spin-coating. An efficiency up to 15.9% under AM 1.5G irradiation is achieved for the cell based on ZnO film fabricated under Ar working gas. The atmosphere of the sputtering chamber can tune the surface electronic properties (band structure) of the resulting ZnO thin film and therefore the photovoltaic performance of the corresponding perovskite solar cell. Precise surface engineering of ZnO thin film was found to be one of the key steps to fabricate ZnO based regular planar perovskite solar cell with high power conversion efficiency. Sputtering method is proved to be one of the excellent techniques to prepare ZnO thin film with controllable properties.