溶液处理的 CuS NPs 作为倒置平面钙钛矿太阳能电池的无机空穴选择接触材料。
Solution-Processed CuS NPs as an Inorganic Hole-Selective Contact Material for Inverted Planar Perovskite Solar Cells.
机构信息
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, and §State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University , Beijing 100871, P. R. China.
出版信息
ACS Appl Mater Interfaces. 2016 Mar;8(12):7800-5. doi: 10.1021/acsami.5b12776. Epub 2016 Mar 18.
Organic-inorganic hybrid perovskite solar cells (PSCs) have drawn worldwide intense research in recent years. Herein, we have first applied another p-type inorganic hole-selective contact material, CuS nanoparticles (CuS NPs), in an inverted planar heterojunction (PHJ) perovskite solar cell. The CuS NP-modification of indium tin oxide (ITO) has successfully tuned the surface work function from 4.9 to 5.1 eV but not affect the surface roughness and transmittance, which can effectively reduce the interfacial carrier injection barrier and facilitate high hole extraction efficiency between the perovskite and ITO layers. After optimization, the maximum power conversion efficiency (PCE) has been over 16% with low J-V hysteresis and excellent stability. Therefore, the low-cost solution-processed and stable CuS NPs would be an alternative interfacial modification material for industrial production in perovskite solar cells.
近年来，有机-无机杂化钙钛矿太阳能电池（PSCs）引起了全球的广泛关注。在此，我们首次在倒置平面异质结（PHJ）钙钛矿太阳能电池中应用了另一种 p 型无机空穴选择性接触材料，即 CuS 纳米粒子（CuS NPs）。CuS NP 修饰氧化铟锡（ITO）成功地将表面功函数从 4.9 eV 调至 5.1 eV，但不影响表面粗糙度和透光率，从而有效降低了界面载流子注入势垒，促进了钙钛矿和 ITO 层之间的高效空穴提取。经过优化，器件的最大能量转换效率（PCE）超过 16%，且具有低的 J-V 滞后和优异的稳定性。因此，低成本溶液处理且稳定的 CuS NPs 有望成为钙钛矿太阳能电池产业化的一种替代界面修饰材料。
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