Efficient single-emitting layer hybrid white organic light-emitting diodes with low efficiency roll-off, stable color and extremely high luminance

Baiquan Liu; Jianhua Zou; Zhongwei Zhou; Lei Wang; Miao Xu; Hong Tao; Dongyu Gao; Linfeng Lan; Honglong Ning; Junbiao Peng

Journal of Industrial and Engineering Chemistry, Vol.30, 85-91, October, 2015

DOI10.1016/j.jiec.2015.05.006 Export Citation

Efficient single-emitting layer hybrid white organic light-emitting diodes with low efficiency roll-off, stable color and extremely high luminance

Baiquan Liu, Jianhua Zou, Zhongwei Zhou, Lei Wang^†, Miao Xu, Hong Tao, Dongyu Gao¹, Linfeng Lan, Honglong Ning^†, and Junbiao Peng

Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
¹New Vision Opto-Electronic Technology Co., Ltd, Guangzhou 510530, China

E-mail:,

An efficient single-emitting layer hybrid white organic light-emitting diode (WOLED) was developed, simultaneously fulfilling low efficiency roll-off, stable color and extreme luminance. At the practical luminance of 1000 cd/m2, a total current efficiency of 42.8 cd/A and power efficiency of 19.2 lm/W are achieved, maintaining as high as 40.5 cd/A and 15.5 lm/W even at 5000 cd/m2. Besides, a slight color variation [(0.025, 0.011)] and extreme luminance (106 cd/m2) are obtained. The working mechanism is unveiled and it is demonstrated that the triplet-exciton-confining ability of electron transport layers plays a more vital role in device performances, particularly for the lifetime.

Keywords:Hybrid;White organic light-emitting diodes;Single-emitting layer;Luminance

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[4] Schwartz G, Fehse K, Pfeiffer M, Walzer K, Leo K, Appl. Phys. Lett., 89, 083509 (2006)

[5] Xu F, Kwon JY, Kim JH, Kim HU, Lim JM, Cho H, Lee C, Lee J, Lee JI, Hwang DH, Synth. Met., 162, 1421 (2012)

[6] Ishisone T, Seo S, Nonaka Y, Kawata T, Ohsawa N, SID Digest, 52, 762 (2014)

[7] Kim BS, Lee Y, Org. Electron., 21, 100 (2015)

[8] Kim BS, Yook KS, Lee JY, Sci. Rep., 4, 6019 (2014)

[9] Sun N, Zhao Y, Zhao F, Chen Y, Yang D, Chen J, Ma D, Appl. Phys. Lett., 105, 013303 (2014)

[10] Yook KS, Jeon SO, Joo CW, Lee JY, J. Ind. Eng. Chem., 15(3), 420 (2009)

[11] Schwartz G, Ke TH, Wu CC, Walzer K, Leo K, Appl. Phys. Lett., 93, 073304 (2008)

[12] Cho YJ, Yook KS, Lee JY, Sci. Rep., 5, 7859 (2015)

[13] Ho CL, Wong WY, Wang Q, Ma DG, Wang LX, Lin ZY, Adv. Funct. Mater., 18(6), 928 (2008)

[14] Wang Q, Ho CL, Zhao Y, Ma D, Wong WY, Wang L, Org. Electron., 11, 238 (2010)

[15] Liu B, Xu M, Wang L, Yan X, Tao H, Su Y, Gao D, Lan L, Zou J, Peng J, Org. Electron., 15, 926 (2014)

[16] Zhao X, Zhang Z, Qian Y, Yi M, Xie L, Hu C, Xie G, Xu H, Han C, Zhao Y, Huang W, J. Mater. Chem. C, 1, 3482 (2013)

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[19] Liu B, Wang L, Xu M, Tao H, Zou J, Gao D, Lan L, Ning H, Peng J, Cao Y, Sci. Rep., 4, 7198 (2014)

[20] Ge G, He J, Guo H, Wang F, Zou D, J. Organomet. Chem., 694, 3050 (2009)

[21] Jeon WS, Kulshreshtha C, Yu JH, Lim MJ, Park JS, Kwon JH, Curr. Appl. Phys., 11(3), 311 (2011)

[22] Su SJ, Sasabe H, Takeda T, Kido J, Chem. Mater., 20, 1691 (2008)

[23] Yang X, Huang H, Pan B, Aldred MP, Zhuang S, Wang L, Chen J, Ma D, J. Phys. Chem. C, 116, 15041 (2012)

[24] Pan B, Wang B, Wang Y, Xu P, Wang L, Chen J, Ma D, J. Mater. Chem. C, 2, 2466 (2014)

[25] Li Y, Hao Y, Li W, Yuan S, Liu H, Cui Y, Wang H, Xu B, Huang W, Opt. Express, 21, 17021 (2013)

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[31] Xia ZY, Su JH, Chang CS, Chen CH, J. Lumines., 135, 323 (2013)

[32] Chang MY, Wu CC, Lin SC, Chen YF, J. Electrochem. Soc., 156(1), J1 (2009)

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[34] Lee JH, Kim JW, Kim SY, Yoo SJ, Lee JH, Kim JJ, Org. Electron., 13, 545 (2012)

[35] Huang WY, Chen ZW, You HW, Fan FC, Chen HF, Wong KT, Org. Electron., 12, 575 (2011)

[36] Chin BD, Lee C, Adv. Mater., 19(16), 2061 (2007)