中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1039/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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