Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter
For the first time, extremely simplified yet high-performance thermally activated delayed fluorescent (TADF) white organic light-emitting diodes (WOLEDs) have been demonstrated. Unlike previous concepts, only a single molecular emitter is required for high-quality white emissions, where an intrinsic...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/143572 |
| _version_ | 1826125654147465216 |
|---|---|
| author | Luo, Dongxiang Chen, Qizan Gao, Yuan Zhang, Menglong Liu, Baiquan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Luo, Dongxiang Chen, Qizan Gao, Yuan Zhang, Menglong Liu, Baiquan |
| author_sort | Luo, Dongxiang |
| collection | NTU |
| description | For the first time, extremely simplified yet high-performance thermally activated delayed fluorescent (TADF) white organic light-emitting diodes (WOLEDs) have been demonstrated. Unlike previous concepts, only a single molecular emitter is required for high-quality white emissions, where an intrinsic TADF emitter is sandwiched between p-type and n-type layers, forming a doping-free p-i-n WOLED. The WOLED exhibits a color rendering index (CRI) of 91, the first WOLED that overtakes its counterparts (single-emitter white polymer/inorganic LEDs). The maximum total external quantum efficiency (28.4%) and power efficiency (68.5 lm W–1) are comparable to those of state-of-the-art doped TADF WOLEDs and doping-free phosphorescent WOLEDs and higher than those of TADF WOLEDs with ultrahigh CRIs (≥90) and high-quality single-emitter white LEDs. Significantly, this is the first TADF WOLED possessing ultrahigh CRIs at high luminance, and 18 796 cd m–2 is 370% higher than that of the previous best-performing one. Moreover, the proposed WOLED is the simplest TADF WOLED. |
| first_indexed | 2024-10-01T06:40:13Z |
| format | Journal Article |
| id | ntu-10356/143572 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:40:13Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1435722020-09-09T08:51:23Z Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter Luo, Dongxiang Chen, Qizan Gao, Yuan Zhang, Menglong Liu, Baiquan School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Excitons Diodes For the first time, extremely simplified yet high-performance thermally activated delayed fluorescent (TADF) white organic light-emitting diodes (WOLEDs) have been demonstrated. Unlike previous concepts, only a single molecular emitter is required for high-quality white emissions, where an intrinsic TADF emitter is sandwiched between p-type and n-type layers, forming a doping-free p-i-n WOLED. The WOLED exhibits a color rendering index (CRI) of 91, the first WOLED that overtakes its counterparts (single-emitter white polymer/inorganic LEDs). The maximum total external quantum efficiency (28.4%) and power efficiency (68.5 lm W–1) are comparable to those of state-of-the-art doped TADF WOLEDs and doping-free phosphorescent WOLEDs and higher than those of TADF WOLEDs with ultrahigh CRIs (≥90) and high-quality single-emitter white LEDs. Significantly, this is the first TADF WOLED possessing ultrahigh CRIs at high luminance, and 18 796 cd m–2 is 370% higher than that of the previous best-performing one. Moreover, the proposed WOLED is the simplest TADF WOLED. 2020-09-09T08:51:23Z 2020-09-09T08:51:23Z 2018 Journal Article Luo, D., Chen, Q., Gao, Y., Zhang, M., & Liu, B. (2018). Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter. ACS Energy Letters, 3(7), 1531–1538. doi:10.1021/acsenergylett.8b00711 2380-8195 https://hdl.handle.net/10356/143572 10.1021/acsenergylett.8b00711 7 3 1531 1538 en ACS Energy Letters © 2018 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Excitons Diodes Luo, Dongxiang Chen, Qizan Gao, Yuan Zhang, Menglong Liu, Baiquan Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title | Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title_full | Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title_fullStr | Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title_full_unstemmed | Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title_short | Extremely simplified, high-performance, and doping-free white organic light-emitting diodes based on a single thermally activated delayed fluorescent emitter |
| title_sort | extremely simplified high performance and doping free white organic light emitting diodes based on a single thermally activated delayed fluorescent emitter |
| topic | Engineering::Electrical and electronic engineering Excitons Diodes |
| url | https://hdl.handle.net/10356/143572 |
| work_keys_str_mv | AT luodongxiang extremelysimplifiedhighperformanceanddopingfreewhiteorganiclightemittingdiodesbasedonasinglethermallyactivateddelayedfluorescentemitter AT chenqizan extremelysimplifiedhighperformanceanddopingfreewhiteorganiclightemittingdiodesbasedonasinglethermallyactivateddelayedfluorescentemitter AT gaoyuan extremelysimplifiedhighperformanceanddopingfreewhiteorganiclightemittingdiodesbasedonasinglethermallyactivateddelayedfluorescentemitter AT zhangmenglong extremelysimplifiedhighperformanceanddopingfreewhiteorganiclightemittingdiodesbasedonasinglethermallyactivateddelayedfluorescentemitter AT liubaiquan extremelysimplifiedhighperformanceanddopingfreewhiteorganiclightemittingdiodesbasedonasinglethermallyactivateddelayedfluorescentemitter |