Efficient and Stable Large-Area Perovskite Solar Cells with Inorganic Perovskite/Carbon Quantum Dot-Graded Heterojunction

作     者：Qiang Sun Cai Shen Deyu Wang Tao Zhang Huaxia Ban Yan Shen Zhipan Zhang Xiao-Li Zhang Guanjun Yang Mingkui Wang Qiang Sun;Cai Shen;Deyu Wang;Tao Zhang;Huaxia Ban;Yan Shen;Zhipan Zhang;Xiao-Li Zhang;Guanjun Yang;Mingkui Wang

作者机构：Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhanHubei 430074China Ningbo Institute of Materials Technology&EngineeringChinese Academy of Sciences1219 Zhongguan RoadNingbo 315201China School of ChemistryBeijing Institute of TechnologyBeijing 102488China State Centre for International Cooperation on Designer Low-Carbon&Environmental MaterialsSchool of Materials Science and EngineeringZhengzhou University450001China State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2021年第2021卷第1期

页      面：1274-1283页

核心收录：

学科分类：07[理学] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China[2018YFB1502900,2019YFE0101300] the National Natural Science Foundation of China[No.21975088] the National Natural Science Foundation of China Major International(Regional)Joint Research Project[NO.51961165106] 

主　　题：perovskite inorganic graded 

摘      要：This work reports on a compositionally graded heterojunction for photovoltaic application by cooperating fluorine-doped carbon quantum dots(FCQDs in short)into the CsPbI_(2.5)Br_(0.5)inorganic perovskite *** this CsPbI_(2.5)Br_(0.5)/FCQDs graded heterojunction in conjunction with low-temperature-processed carbon electrode,a power conversion efficiency of 13.53%for 1 cm^(2)all-inorganic perovskite solar cell can be achieved at AM 1.5G solar *** the best of our knowledge,this is one of the highest efficiency reported for carbon electrode based all-inorganic perovskite solar cells so far,and the first report of 1 cm^(2)carbon counter electrode based inorganic perovskite solar cell with PCE exceeding 13%.Moreover,the inorganic perovskite/carbon quantum dot graded heterojunction photovoltaics maintained over 90%of their initial efficiency after thermal aging at 85°for 1056 *** conception of constructing inorganic perovskite/FCQDs graded heterojunction offers a feasible pathway to develop efficient and stable photovoltaics for scale-up and practical applications.