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
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DOI | |
发表期刊 | |
ISSN | 1094-4087
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EISSN | 1094-4087
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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 | |
语种 | 英语
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学校署名 | 第一
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资助项目 | National Key Research and Development Program of China[
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WOS研究方向 | Optics
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WOS类目 | Optics
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WOS记录号 | WOS:000710928500157
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出版者 | |
EI入藏号 | 20214411084931
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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
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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
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ESI学科分类 | PHYSICS
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Scopus记录号 | 2-s2.0-85117886173
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来源库 | Scopus
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引用统计 |
被引频次[WOS]:5
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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.
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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.
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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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条目包含的文件 | ||||||
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