In-situ defect passivation assisted three-step printing of efficient and stable formamidine-lead bromide solar cells  

作　　者：Hang Yang Tao Zhou Haoyu Cai Wenjian Shen Hao Chen Yongjun Liu Juan Zhao Yi-Bing Cheng Jie Zhong 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,Hubei,China [2]Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,Foshan 528216,Guangdong,China [3]School of Automobile Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China

出　　处：《Journal of Energy Chemistry》2024年第9期396-405,共10页能源化学（英文版）

基　　金：financially supported by the Guangdong Pearl River Talent Program (2021ZT09L400);National Natural Science Foundation of China (52072284, 21875178, 91963209);the Joint Funds of Natural Science Foundation of Hubei Province (2022CFD087)

摘　　要：Perovskite solar cells(PSCs)emerge as the most promising photovoltaics(PV)for their high performance and potential convenient cost-effective production routes comparing to the sophomore PV technologies.The printed PSCs with simplified device architecture and fabrication procedures could further enhance the competitive strength of PSC technology.In this work,we present an in-situ defect passivation(ISDP)assisted full-printing of high performance formamidine-lead bromide(FAPbBr_(3))PSCs.Only three rapid printing steps are involved for electron transporting layer(ETL),perovskite and carbon to form a complete solar cell on the low-cost fluorine-doped tin oxide(FTO)substrate.Long-chain polymer monomethyl ether polyethylene glycol is particularly utilized as the ISDP passivator,leading to conformal coating on the rough FTO and defect passivation for both ETL and perovskite during printing.A high efficiency of 10.85%(certified 10.14%)and a high V_(oc)up to 1.57 V are achieved for the printed device.The unencapsulated PSCs maintain above 90%of the initial efficiency after continuously heating at 85℃for 1000 h and over 80%of the efficiency after the maximum power point tracking for 3500 h.The fully printed semitransparent PSCs with carbon grids(CGs)show average visible light transmittance over 33%and an efficiency of 8.81%.

关 键 词：Formamidinium lead bromide Fully printed Lowcosts Carbon electrode SEMITRANSPARENT 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ134.33[化学工程—无机化工]