Extremely Low Roll-Off and High Efficiency Achieved by Strategic Exciton Management in Organic Light-Emitting Diodes with Simple Ultrathin Emitting Layer Structure
文献类型：期刊论文
| 作者 | Zhang, Tianmu1; Shi, Changsheng1; Zhao, Chenyang1; Wu, Zhongbin1; Chen, Jiangshan2; Xie, Zhiyuan1; Ma, Dongge1,2 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2018-03-07 |
| 卷号 | 10期号:9页码:8148-8154 |
| 关键词 | Ultrathin Efficiency Roll-off Exciton Management Exciton Distribution Organic Light-emitting Diodes |
| ISSN号 | 1944-8244 |
| DOI | 10.1021/acsami.8b00513 |
| 英文摘要 | Phosphorescent organic light-emitting diodes (OLEDs) possess the property of high efficiency but have serious efficiency roll-off at high luminance. Herein, we manufactured high-efficiency phosphorescent OLEDs with extremely low roll-off by effectively locating the ultrathin emitting layer (UEML) away from the high-concentration exciton formation region. The strategic exciton management in this simple UEML architecture greatly suppressed the exciton annihilation due to the expansion of the exciton diffusion region; thus, this efficiency roll-off at high luminance was significantly improved. The resulting green phosphorescent OLEDs exhibited the maximum external quantum efficiency of 25.5%, current efficiency of 98.0 cd A(-1), and power efficiency of 85.4 lm W-1 and still had 25.1%, 94.9 cd A(-1), and 55.5 lm W-1 at 5000 cd m(-2) luminance, and retained 24.3%, 92.7 cd A(-1), and 49.3 lm W-1 at 10 000 cd m(-2) luminance, respectively. Compared with the usual structures, the improvement demonstrated in this work displays potential value in applications. |
| 语种 | 英语 |
| WOS记录号 | WOS:000427204100068 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45793]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Xie, Zhiyuan; Ma, Dongge |
| 作者单位 | 1.Univ Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tianmu,Shi, Changsheng,Zhao, Chenyang,et al. Extremely Low Roll-Off and High Efficiency Achieved by Strategic Exciton Management in Organic Light-Emitting Diodes with Simple Ultrathin Emitting Layer Structure[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(9):8148-8154. |
| APA | Zhang, Tianmu.,Shi, Changsheng.,Zhao, Chenyang.,Wu, Zhongbin.,Chen, Jiangshan.,...&Ma, Dongge.(2018).Extremely Low Roll-Off and High Efficiency Achieved by Strategic Exciton Management in Organic Light-Emitting Diodes with Simple Ultrathin Emitting Layer Structure.ACS APPLIED MATERIALS & INTERFACES,10(9),8148-8154. |
| MLA | Zhang, Tianmu,et al."Extremely Low Roll-Off and High Efficiency Achieved by Strategic Exciton Management in Organic Light-Emitting Diodes with Simple Ultrathin Emitting Layer Structure".ACS APPLIED MATERIALS & INTERFACES 10.9(2018):8148-8154. |
入库方式： OAI收割
来源：化学研究所
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