Related Experiment Video
Updated: Sep 23, 2025

Development of Efficient OLEDs from Solution Deposition
Published on: November 4, 2022
84% efficiency improvement in all-inorganic perovskite light-emitting diodes assisted by a phosphorescent material
Chun-Hong Gao1, Xing-Juan Ma1, Yue Zhang1
1School of Physical Science and Technology, MOE Key Laboratory on Luminescence and Real Time Analysis, Southwest University Chongqing 400715 China gch0122@swu.edu.cn.
Abstract:
A novel mixed perovskite emitter layer is applied to design all-inorganic cesium lead halide perovskite light-emitting diodes (PeLEDs) with high electroluminescence (EL) performance, by combining CsPbBr3 with iridium(iii)bis[2-(4',6'-difluorophenyl)pyridinato-N,C2']-picolinate (FIrpic), where FIrpic is a phosphorescent material with very high internal quantum efficiency (IQE) approaching 100%. The CsPbBr3:FIrpic PeLEDs show a maximum luminance of 5486 cd m-2, and an external quantum efficiency of 0.47%, which are 1.84 and 1.76 times that of neat CsPbBr3 PeLEDs, respectively. It is found that FIrpic molecules as an assistant dopant can efficiently transmit energy from the excitons of FIrpic to the excited state of the CsPbBr3 emitter via a Förster energy transfer process, leading to enhanced EL efficiency in the CsPbBr3:FIrpic PeLEDs.
More Related Videos
08:51Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
10:41Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
Published on: May 31, 2018
Related Concept Videos
Photoluminescence: Applications
Variables Affecting Phosphorescence and Fluorescence
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...