A universal hydrochloric acid-assistant powder-to-powder strategy for quick and mass preparation of lead-free perovskite microcrystals  

作　　者：Huanxin Yang Xiangxiang Chen Yiyue Chu Changjiu Sun Haolin Lu Mingjian Yuan Yuhai Zhang Guankui Long Libing Zhang Xiyan Li 

机构地区：[1]Institute of Photoelectronic Thin Film Devices and Technology,Solar Energy Conversion Center,Nankai University,Tianjin 300350,China [2]Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Nankai University,Tianjin 300350,China [3]Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education,Nankai University,Tianjin 300350,China [4]Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong,Institute for Advanced Interdisciplinary Research(IAIR),University of Jinan,Jinan 250022 Shandong,China [5]Tianjin Key Laboratory of Molecular Optoelectronic,Department of Chemistry,Tianjin University,Tianjin 300354,China [6]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Renewable Energy Conversion and Storage Center(RECAST),College of Chemistry,Nankai University,Tianjin 300071,China [7]Schoolof Materials Science and Engineering,Nankai University,Tianjin 300350,China

出　　处：《Light(Science & Applications)》2023年第4期613-624,共12页光（科学与应用)（英文版）

基　　金：supported by the National Natural Science Foundation of China(22005152,22275101).

摘　　要：Lead-free halide perovskite materials possess low toxicity,broadband luminescence and robust stability compared with conventional lead-based perovskites,thus holding great promise for eyes-friendly white light LEDs.However,the traditionally used preparation methods with a long period and limited product yield have curtailed the commercialization of these materials.Here we introduce a universal hydrochloric acid-assistant powder-to-powder strategy which can accomplish the goals of thermal-,pressure-free,eco-friendliness,short time,low cost and high product yield,simultaneously.The obtained Cs_(2)Na_(0.9)Ag_(0.1)In_(0.95)Bi_(0.05)Cl_(6)microcrystals exhibit bright self-trapped excitons emission with quantum yield of(98.3±3.8)%,which could retain(90.5±1.3)%and(96.8±0.8)%after continuous heating or ultraviolet-irradiation for 1000 h,respectively.The phosphor converted-LED exhibited near-unity conversion efficiency from ultraviolet chip to self-trapped excitons emission at~200 mA.Various ions doping(such as Cs_(2)Na_(0.9)Ag_(0.1)InCl_(6):Ln^(3+))and other derived lead-free perovskite materials(such as Cs_(2)ZrCl_(6)and Cs_(4)MnBi_(2)Cl_(12))with high luminous performance are all realized by our proposed strategy,which has shown excellent availability towards commercialization.

关 键 词：PEROVSKITE PREPARATION hydrochloric 

分 类 号：O61[理学—无机化学]