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题名

Analyzing and modulating energy transfer in ternary-emissive system of quantum dot light-emitting diodes towards efficient emission

作者
发表日期
2021-10-25
DOI
发表期刊
ISSN
1094-4087
EISSN
1094-4087
卷号29期号:22页码:36964-36976
摘要

The mechanisms for energy transfer including Förster resonance energy transfer (FRET) and radiative energy transfer in ternary-emissive system consists of blended-quantum dots (QDs, red-QDs blended with blue-QDs) emissive layer (EML) and blue-emissive hole-transport material that contained in quantum dot light-emitting diodes (QLEDs) are complicated. As the energy transfer could exhibit either positive or negative impact on QD’s photoluminescence (PL) and electroluminescence (EL), it is important to analyze and modulate energy transfer in such ternary-emissive system to obtain high-efficiency QLEDs. In this work, we have demonstrated that proper B-QDs doping has a positive impact on R-QDs’ PL and EL, where these improvements were attributed to the B-QDs’ spacing effect on R-QDs which weakens homogeneous FRET among R-QDs and near 100% efficient heterogeneous FRET from B-QDs to R-QDs. With optimization based on the analysis of energy transfer, the PL quantum yield of blended-QDs (with R:B blending ratio of 90:10, in quality) film has been enhanced by 35% compared with that of unblended R-QDs film. Moreover, thanks to the spacing effect and high-efficiency FRET from B-QDs to R-QDs, the external quantum efficiency of QLEDs that integrate optimized blended-QDs (R:B=90:10) EML reaches 22.1%, which is 15% higher than that of the control sample (19.2%) with unblended R-QDs EML. This work provides a systematically analytical method to study the energy transfer in ternary-emissive system, and gives a valid reference for the analysis and development of the emerging QLEDs that with blended-QDs EML.

相关链接[Scopus记录]
收录类别
SCI ; EI
语种
英语
学校署名
第一
资助项目
National Key Research and Development Program of China[
WOS研究方向
Optics
WOS类目
Optics
WOS记录号
WOS:000710928500157
出版者
EI入藏号
20214411084931
EI主题词
Blending ; Electroluminescence ; Forster resonance energy transfer ; Light ; Nanocrystals ; Organic light emitting diodes (OLED) ; Quality control ; Quantum chemistry ; Quantum efficiency ; Semiconductor quantum dots
EI分类号
Electricity: Basic Concepts and Phenomena:701.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Quality Assurance and Control:913.3 ; Classical Physics; Quantum Theory; Relativity:931 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1
ESI学科分类
PHYSICS
Scopus记录号
2-s2.0-85117886173
来源库
Scopus
引用统计
被引频次[WOS]:5
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/254839
专题工学院_电子与电气工程系
作者单位
1.College of New Materials and New Energies,Shenzhen Technology University,Shenzhen,518118,China
2.Guangdong University Key Lab for Advanced Quantum Dot Displays and Lighting,Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Electrical and Electronic Engineering,The University of Hong Kong,Hongkong,999077,Hong Kong
4.Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology),Ministry of Education,Shenzhen,518055,China
第一作者单位电子与电气工程系;  南方科技大学
第一作者的第一单位电子与电气工程系
推荐引用方式
GB/T 7714
Tan,Yangzhi,Xiao,Xiangtian,Gui,Sizhe,et al. Analyzing and modulating energy transfer in ternary-emissive system of quantum dot light-emitting diodes towards efficient emission[J]. OPTICS EXPRESS,2021,29(22):36964-36976.
APA
Tan,Yangzhi.,Xiao,Xiangtian.,Gui,Sizhe.,Sun,Jiayun.,Ye,Taikang.,...&Wang,Kai.(2021).Analyzing and modulating energy transfer in ternary-emissive system of quantum dot light-emitting diodes towards efficient emission.OPTICS EXPRESS,29(22),36964-36976.
MLA
Tan,Yangzhi,et al."Analyzing and modulating energy transfer in ternary-emissive system of quantum dot light-emitting diodes towards efficient emission".OPTICS EXPRESS 29.22(2021):36964-36976.
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