High efficiency phosphorescent white organic light-emitting diodes with low efficiency roll-off achieved by strategic exciton management based on simple ultrathin emitting layer structures
文献类型：期刊论文
| 作者 | Zhang, Tianmu1; Shi, Changsheng1; Zhao, Chenyang1; Wu, Zhongbin1; Sun, Ning3; Chen, Jiangshan2; Xie, Zhiyuan1; Ma, Dongge1,2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2017-12-28 |
| 卷号 | 5期号:48页码:12833-12838 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c7tc04705c |
| 英文摘要 | White organic light-emitting diodes (WOLEDs) with ultrathin emitting layer (UEML) structures have vast potential in applications due to highly simplified processing. However, the efficiency and efficiency roll-off at high luminance require further improvement. In this paper, we successfully fabricated high efficiency and low roll-off phosphorescent WOLEDs by strategically controlling the location of red, green and blue UEMLs. The probability of exciton recombination was significantly enhanced, along with greatly suppressed exciton annihilation. The resulting WOLEDs exhibited a maximum external quantum efficiency (EQE) of 20.3%, a current efficiency (CE) of 44.2 cd A(-1), and a power efficiency (PE) of 39.0 lm W-1, and remained as high as 18.8%, 41.9 cd A(-1), and 28.6 lm W-1 at a luminance of 5000 cd m(-2), respectively. Additionally, the devices showed superior warm white emission with a small variation in the Commission Internationale de l'Eclairage (CIE), from (0.47, 0.43) to (0.43, 0.44) in the luminance range of 1000 cd m(-2) to 30000 cd m(-2), and the color rendering index (CRI) was as high as 80. This should be among the best results reported so far for WOLEDs based on UEML structures, indicating the great potential of high-performance WOLEDs fabricated using a very simple technology. |
| 语种 | 英语 |
| WOS记录号 | WOS:000418069700022 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45289]  |
| 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, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Jilin, Peoples R China 2.South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou, Guangdong, Peoples R China 3.Umea Univ, Dept Phys, Organ Photon & Elect Grp, SE-90187 Umea, Sweden |
| 推荐引用方式 GB/T 7714 | Zhang, Tianmu,Shi, Changsheng,Zhao, Chenyang,et al. High efficiency phosphorescent white organic light-emitting diodes with low efficiency roll-off achieved by strategic exciton management based on simple ultrathin emitting layer structures[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(48):12833-12838. |
| APA | Zhang, Tianmu.,Shi, Changsheng.,Zhao, Chenyang.,Wu, Zhongbin.,Sun, Ning.,...&Ma, Dongge.(2017).High efficiency phosphorescent white organic light-emitting diodes with low efficiency roll-off achieved by strategic exciton management based on simple ultrathin emitting layer structures.JOURNAL OF MATERIALS CHEMISTRY C,5(48),12833-12838. |
| MLA | Zhang, Tianmu,et al."High efficiency phosphorescent white organic light-emitting diodes with low efficiency roll-off achieved by strategic exciton management based on simple ultrathin emitting layer structures".JOURNAL OF MATERIALS CHEMISTRY C 5.48(2017):12833-12838. |
入库方式： OAI收割
来源：化学研究所
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