| Title | Over 32.5% Efficient Top-Emitting Quantum-Dot LEDs with Angular-Independent Emission |
| Author | |
| Corresponding Author | Chen, Shuming |
| Publication Years | 2022-06-01
|
| DOI | |
| Source Title | |
| ISSN | 1944-8244
|
| EISSN | 1944-8252
|
| Volume | 14Pages:30039-30045 |
| Abstract | Top-emitting quantum-dot light-emitting diodes (TQLEDs) with light emitted from the top semitransparent electrodes can improve the aperture ratio, efficiency, and color saturation of displays. However, because of the microcavity effect induced by the top semitransparent electrodes, the devices usually exhibit angular-dependent emission, which is unfavorable for display applications. In this study, highly transparent and conductive indium zinc oxide (IZO) is used as the top electrode to reduce the microcavity effect, thereby improving the angular color stability. By further applying a nanosphere scattering layer on the IZO top electrode, the trapped light is greatly extracted, and thus, the external quantum efficiencies (EQEs) are remarkably improved by 35, 50, and 133% for the red, green, and blue devices, respectively. The champion red TQLEDs exhibit a record EQE of 32.5% with angular-independent color emission. The demonstrated TQLEDs with high efficiency, high color stability, and a high aperture ratio could be the ideal candidates for QLED displays. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | First
; Corresponding
|
| Funding Project | National Natural Science Foundation of China[62174075]
; Shenzhen Science and Technology Program[JCYJ20210324105400002]
; Guangdong University Research Program[2020ZDZX3062]
|
| WOS Research Area | Science & Technology - Other Topics
; Materials Science
|
| WOS Subject | Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
|
| WOS Accession No | WOS:000820710800001
|
| Publisher | |
| EI Accession Number | 20223012400008
|
| EI Keywords | Color
; Display devices
; II-VI semiconductors
; Microcavities
; Nanocrystals
; Organic light emitting diodes (OLED)
; Quantum efficiency
; Semiconductor quantum dots
; Zinc oxide
|
| ESI Classification Code | Semiconducting Materials:712.1
; Electronic Components and Tubes:714
; Semiconductor Devices and Integrated Circuits:714.2
; Computer Peripheral Equipment:722.2
; Light/Optics:741.1
; Nanotechnology:761
; Inorganic Compounds:804.2
; Quantum Theory; Quantum Mechanics:931.4
; Crystalline Solids:933.1
|
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:12
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/353375 |
| Department | Department of Electrical and Electronic Engineering |
| Affiliation | Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China |
| First Author Affilication | Department of Electrical and Electronic Engineering |
| Corresponding Author Affilication | Department of Electrical and Electronic Engineering |
| First Author's First Affilication | Department of Electrical and Electronic Engineering |
| Recommended Citation GB/T 7714 |
Shi, Liangliang,Chen, Shuming. Over 32.5% Efficient Top-Emitting Quantum-Dot LEDs with Angular-Independent Emission[J]. ACS Applied Materials & Interfaces,2022,14:30039-30045.
|
| APA |
Shi, Liangliang,&Chen, Shuming.(2022).Over 32.5% Efficient Top-Emitting Quantum-Dot LEDs with Angular-Independent Emission.ACS Applied Materials & Interfaces,14,30039-30045.
|
| MLA |
Shi, Liangliang,et al."Over 32.5% Efficient Top-Emitting Quantum-Dot LEDs with Angular-Independent Emission".ACS Applied Materials & Interfaces 14(2022):30039-30045.
|
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