相关实验视频

Updated: Jul 9, 2025

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

高效率的双层发光层天蓝色体有机发光二极管与缓慢的排放效率减弱

Qi Zhu¹, Jinglin Xu¹

¹School Electronics and Information Engineering, Henan Polytechnic Institute, Nanyang, 473000, China.

|November 30, 2023

概括

这项研究通过将 (III) 复合物入宿主材料来增强天蓝色光有机发光二极管 (OLED). 优化的设备显著降低了效率滚动和高性能指标.

科学领域:

材料科学材料科学材料科学
有机电子有机电子
光物理学的光学物理学

背景情况:

有机电光发射 (EL) 装置对于显示和照明技术至关重要.
在天空蓝色光OLED中实现高效率和最大限度地降低效率仍然是一个挑战.

研究的目的:

开发高效的天空蓝色光有机电发光 (EL) 设备,以最小的效率滚动.
调查兴奋剂度和发射器层厚度对设备性能的影响.

主要方法:

化 (III) 双 (4,6-difluorophenyl) pyridinato-N,C2') 皮科林酸盐 (FIrpic) 转化为4,4',4′′-tris (carbazol-9-yl) 三胺 (TcTa) 和9-4-tert-butylphenyl) -3,6-bis (triphenylsilyl) -9H-carbazole (CzSi) 主体材料.
有机电光发射 (EL) 装置的制造和表征,具有不同的兴奋剂度和发射层厚度.
分析电光发射 (EL) 性能,包括功率效率,电流效率和外部量子效率 (EQE).

主要成果:

优化的设备实现了高功率效率 (74.82 lm/W),电流效率 (66.68 cd/A) 和外部量子效率 (EQE) (31.9%).
在2000 cd/m2时,该设备保持了出色的效率:57.71 lm/W,62.46 cd/A和29.3%的EQE.
薄膜添加剂的TcTa层被确定为对设备效率至关重要的.

结论:

提升的EL效率归因于平衡的电荷载体分布和扩大的再组合区域,这是由宿主和剂分子之间的优化能量水平引起的.
开发的天空蓝色光OLED显示了高性能应用的潜力.
仔细控制兴奋剂度和发射层厚度对于优化OLED性能至关重要.

关键词:

蓝色设备蓝色设备运营商的分销服务提供商双重发光层是双重发光层.刺激的重组组织.

更多相关视频

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

相关概念视频

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...

Photoluminescence: Applications

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

Variables Affecting Phosphorescence and Fluorescence

Variables Affecting Phosphorescence and Fluorescence

Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...