Issue 49, 2015
From the journal:

RSC Advances

Improved performance for white phosphorescent organic light-emitting diodes utilizing an orange ultrathin non-doped emission layer

Kaiwen Xue,a   Ren Sheng,a   Bingye Chen,a   Yu Duan,a   Ping Chen,*a   Yongqiang Yang,a   Xiao Wang,a   Yahui Duana  and  Yi Zhaoa  

* Corresponding authors

a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, People's Republic of China
E-mail: pingchen@jlu.edu.cn
Fax: +86-431-8516-8270

Abstract

Efficient white phosphorescent organic light-emitting diodes with excellent stable spectra based on an orange ultrathin non-doped layer and a blue doped emission layer are reported. The emission color can be changed by adjusting the thickness of the 4,4′-bis(carbazol-9-yl)biphenyl (CBP) layer or the mixed ratio of CBP and 2,2′,2′′-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi) in the mixed interlayer. On the basis of the mixed CBP:TPBi interlayer, we successfully fabricated a white device with superior stable spectra and lower turn-on voltage. Moreover, the white device with an optimum mixed ratio of 2 : 1 in the mixed interlayer has a power efficiency of 40.1 lm W−1, which is 2.1 times as high as that of the device with a pure CBP spacer.

Graphical abstract: Improved performance for white phosphorescent organic light-emitting diodes utilizing an orange ultrathin non-doped emission layer

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Article information

DOI
https://doi.org/10.1039/C5RA01493J
Article type
Paper
Submitted
25 Jan 2015
Accepted
22 Apr 2015
First published
23 Apr 2015

RSC Adv., 2015,5, 39097-39102

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Improved performance for white phosphorescent organic light-emitting diodes utilizing an orange ultrathin non-doped emission layer

K. Xue, R. Sheng, B. Chen, Y. Duan, P. Chen, Y. Yang, X. Wang, Y. Duan and Y. Zhao, RSC Adv., 2015, 5, 39097 DOI: 10.1039/C5RA01493J

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