葡萄糖作钝化剂的绿光多晶薄膜钙钛矿发光二极管  

Green Polycrystalline Perovskite Films with Glucose as Passivator for Light-emitting Diodes

作　　者：董建华 卢璐 金旭东 卢琦晴 苗艳勤[1,2] 赵敏 DONG Jianhua;LU Lu;JIN Xudong;LU Qiqing;MIAO Yanqin;ZHAO Min(Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan 030024,China;Xingxian Economic Development Zone Aluminum Magnesium New Material Research and Development Company Limited,Xingxian 033600,China)

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024 [2]山西浙大新材料与化工研究院,山西太原030024 [3]兴县经开区铝镁新材料研发有限公司,山西兴县033600

出　　处：《发光学报》2023年第2期328-336,共9页Chinese Journal of Luminescence

基　　金：山西科技创新人才团队项目(202204051001013);山西省基础研究项目(20210302123115);山西-浙大新材料与化工研究院基础研究项目(2021SX-FR007);吕梁市高层次人才重点研发计划项目(2021RC^(-2)^(-1)8)。

摘　　要：金属卤化物钙钛矿发光二极管具有颜色可调、色纯度高、光谱稳定性好等优点,成为近年来的研究热点。溶液加工的多晶薄膜钙钛矿发光二极管制备工艺简单且成本低,但结晶过程中容易形成缺陷,进而影响器件性能。本文提出采用低成本的葡萄糖作为钝化剂,制备多晶薄膜钙钛矿发光二极管,葡萄糖的加入有效抑制了器件中缺陷诱导非辐射复合损失。在葡萄糖浓度为0.2 mol·L^(-1)时,缺陷钝化效果最佳,器件的最大亮度达到11840 cd·m^(-2),最大电流效率为7.89 cd·A^(-1),光谱稳定性及色纯度好,且表现出较好的重复性。本文为多晶薄膜钙钛矿发光二极管中缺陷的钝化提供了简单而有效的方法。Metal-halide perovskite light-emitting diodes have become a research hotspot in recent years,for they have the advantages of tunable emission color,high color purity and excellent spectral stability.Solution processed polycrystalline thin film perovskite light-emitting diodes have simple and low-cost preparation process,but it is easy to form defects in the crystallization process,which will affect the performance of the device.In this work,low-cost glucose is used as passivation agent to prepare polycrystalline thin film perovskite light-emitting diodes.The addition of glucose can effectively inhibit the trap-assisted nonradiative recombination loss in the devices.When the glucose concentration was 0.2 mol·L^(-1),the maximum brightness of the device reached 11840 cd·m^(-2),the maximum current efficiency was 7.89 cd·A^(-1).Our devices have excellent spectral stability,color purity and repeatability.This work provides a simple and effective method for the passivation of defects in polycrystalline thin film perovskite light-emitting diodes.

关 键 词：钙钛矿发光 多晶薄膜 葡萄糖 缺陷钝化 

分 类 号：O482.31[理学—固体物理] TN312.8[理学—物理]