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

DONG Jianhua; LU Lu; JIN Xudong; LU Qiqing; MIAO Yanqin; ZHAO Min

doi:10.37188/CJL.20220297

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

Device Fabrication and Physics | 更新时间：2023-03-13

- Green Polycrystalline Perovskite Films with Glucose as Passivator for Light-emitting Diodes
  增强出版
- Chinese Journal of Luminescence Vol. 44, Issue 2, Pages: 328-336(2023)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  Science and Technology Innovation Talent Team Project of Shanxi Province(202204051001013);Fundamental Research Program of Shanxi Province(20210302123115);Shanxi⁃Zheda Institute of Advanced Materials and Chemical Engineering;Key Research and Development Program of High⁃level Scientific and Technological Talents in Lvliang City(2021RC⁃2⁃18)
- DOI：10.37188/CJL.20220297
  CLC： O482.31;TN312.8
- Published：05 February 2023，
  
  Received：14 August 2022，
  
  Revised：31 August 2022，
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董建华,卢璐,金旭东等.葡萄糖作钝化剂的绿光多晶薄膜钙钛矿发光二极管[J].发光学报,2023,44(02):328-336.

DONG Jianhua,LU Lu,JIN Xudong,et al.Green Polycrystalline Perovskite Films with Glucose as Passivator for Light-emitting Diodes[J].Chinese Journal of Luminescence,2023,44(02):328-336.
董建华,卢璐,金旭东等.葡萄糖作钝化剂的绿光多晶薄膜钙钛矿发光二极管[J].发光学报,2023,44(02):328-336. DOI： 10.37188/CJL.20220297.

DONG Jianhua,LU Lu,JIN Xudong,et al.Green Polycrystalline Perovskite Films with Glucose as Passivator for Light-emitting Diodes[J].Chinese Journal of Luminescence,2023,44(02):328-336. DOI： 10.37188/CJL.20220297.

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11 840 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。

Abstract

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 11 840 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

Keywords

perovskite light-emittingpolycrystalline thin filmglucosedefects passivation

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