题目：
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Hot-Electron Injection in Sandwiched TiOx-Au-TiOxStructure for High Performance Planar Perovskite Solar Cells
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作者：
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Zhongcheng Yuana, Zhongwei Wua, Sai Baib, Zhouhui Xiaa, Weidong Xua, Tao Songa, Haihua Wua, Luhai Xua, Junjie Sib, Yizheng Jinband Baoquan Suna*
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单位：
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aInstitute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials &Devices, Soochow University, Suzhou, Jiangsu 215123, PR China
bState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：
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Large amount of trap states in low temperature processed TiOxfilm hindered the charge transport in perovskite solar cells. Here, gold nanoparticles (Au NPs) were incorporated into a sandwiched structure of TiOx/Au NPs/ TiOxto improve the charge transport properties of low temperature (150 oC) processed electron conductor layers through plasmonic-mediated hot carrier injection at metal-semiconductor Schottky junction. And based on this structure, a remarkable device performance of 16.2 % was achieved in planar perovskite device geometry. A detailed investigation on the hot-electron generation and injection process of TiOx/Au NPs/ TiOxcomposites was demonstrated to explain the origin of device improvement. Further investigation revealed that hot electrons could be injected from Au NPs to TiOxat theplasmonic wavelength (500-600 nm) of Au NPs, resulting in increased film conductivity and surface potential of the TiOx film. The sandwitched structure of TiOx/Au NPs/TiOxis a key to achieve enhanced device performance to aovid any direct contact between Au NPs and perovskite, which is quite different from conjugated polymer/fullerene derivative solar cells. Our present work provides an alternative design of novel charge extracting layer toward low temperature processed highly efficiencient perovskite solar cells.
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影响因子：
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14.385
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分区情况：
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1区
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链接：
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http://onlinelibrary.wiley.com/doi/10.1002/aenm.201500038/epdf
责任编辑：向丹婷 |