ICCAS OpenIR
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
Zhang, Tianmu1; Shi, Changsheng1; Zhao, Chenyang1; Wu, Zhongbin1; Sun, Ning3; Chen, Jiangshan2; Xie, Zhiyuan1; Ma, Dongge1,2
2017-12-28
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
Volume5Issue:48Pages:12833-12838
AbstractWhite 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.
DOI10.1039/c7tc04705c
Indexed BySCI
Language英语
WOS IDWOS:000418069700022
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/45290
Collection中国科学院化学研究所
Corresponding AuthorXie, Zhiyuan; Ma, Dongge
Affiliation1.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
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Tianmu]'s Articles
[Shi, Changsheng]'s Articles
[Zhao, Chenyang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Tianmu]'s Articles
[Shi, Changsheng]'s Articles
[Zhao, Chenyang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Tianmu]'s Articles
[Shi, Changsheng]'s Articles
[Zhao, Chenyang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.