ZnO纳米结构及其在钙钛矿光伏电池中的应用  

ZnO nanostructures and the application in perovskite solar cells

作　　者：司浩楠 张铮[1,2] 廖庆亮 康卓[1,2] 张跃 Haonan Si;Zheng Zhang;Qingliang Liao;Zhuo Kang;Yue Zhang(Beijing Advanced Innovation Center for Materials Genome Engineering,Beijing Key Laboratory for Advanced Energy Materials and Technologies,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory for Advanced Metals and Materials,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学材料基因工程高精尖创新中心,北京市先进能源材料与技术重点实验室,北京100083 [2]北京科技大学新金属材料国家重点实验室,材料科学与工程学院,北京100083

出　　处：《科学通报》2020年第25期2721-2739,共19页Chinese Science Bulletin

基　　金：国家重点研发计划重点专项(2018YFA0703503,2016YFA0202701);国家自然科学基金(51991340,51991342,51527802,51702014,51902021);高等学校学科创新引智计划(B14003);新金属材料国家重点实验室自主课题(2018Z-03,2020Z-01);中央高校基本科研业务费(06500160,FRF-TP-18-042A1,FRF-AS-17-002,FRF-TP-19-005A2)资助。

摘　　要：近年来,有机-无机杂化钙钛矿光伏电池取得了突飞猛进的发展,已成为光伏领域的研究焦点;其光伏性能的不断提高不仅与钙钛矿材料自身质量与光电特性的提升有关,同时依赖于载流子传输层的优化与设计.鉴于ZnO的优势和特性,本文聚焦于ZnO纳米结构设计及其在钙钛矿光伏电池中的应用,简述了ZnO材料独特的光电性质,总结了ZnO纳米结构的制备方法及合成原理;详细综述了不同维度ZnO纳米结构在钙钛矿光伏电池中的发展进程,着重阐述了化学掺杂、表面修饰、应力调控策略在ZnO基钙钛矿光伏电池性能优化方面的研究进展.本文系统总结了ZnO电子传输层的国内外研究现状、应用前景及发展趋势,为设计构筑高性能ZnO基钙钛矿光伏电池提供了重要的指导.Organic-inorganic hybrid perovskite solar cells have experienced a skyrocketing development in recent years,and become the undisputed research focus in the field of photovoltaics.The perovskite absorbers combined with electron and hole transporting layers jointly contribute to high power conversion efficiencies of over 25%.Specifically,the outstanding optoelectronic properties of perovskite materials,such as low exciton binding energies,tunable band gaps,high absorption coefficients and long diffusion lengths,meet many of the requirements of highly efficient photoelectric energy conversion.Meanwhile,the charge-selective contact layers are responsible for the extraction and transport of photogenerated charges and directly contact with perovskite absorber,which are closely related to the performance of perovskite solar cells.Therefore,the outstanding photovoltaic performance is not only bound up with the improvement of perovskite quality and photoelectric properties,but also depends on the optimization and design of charge transporting layers.In general,owing to the un-balanced diffusion lengths of holes and electrons in perovskite,the electron transporting layers play an important role in perovskite solar cells.They are widely used to compensate for the difference of hole and electron diffusion lengths.Additionally,the electron transporting layer usually acts as a blocking layer to ease the charge recombination at interface.In the past decade,various n-type materials,such as TiO2,SnO2,ZnO,and ZnSnO4,have been employed as electron transporting layers in perovskite solar cells.Among the materials mentioned above,ZnO has attracted a lot of attention due to its excellent physical and chemical properties.Importantly,ZnO as a typical direct bandgap semiconductor has suitable energy level,which enables efficient electron extraction and hole blocking.The relatively high electron mobility of ZnO allows the low recombination loss.Also,ZnO shows high transmittance in the visible spectrum and is inexpensive.Another merit of Z

关 键 词：ZNO纳米结构 钙钛矿光伏电池 电子输运 界面工程 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]