A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

Seung Geon Yoo; Sang Kyu Jeon; Seok-Ho Hwang; Jun Yeob Lee

Journal of Industrial and Engineering Chemistry, Vol.32, 72-76, December, 2015

DOI10.1016/j.jiec.2015.07.020 Export Citation

A strong hole transport type host material for high quantum efficiency blue phosphorescent organic light-emitting diodes

Seung Geon Yoo, Sang Kyu Jeon¹, Seok-Ho Hwang , and Jun Yeob Lee^{1, †}

Department of Polymer Science and Engineering, Dankook University, 152, Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do 448-742, Republic of Korea
¹School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Republic of Korea

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A strong hole transport type host material derived from bicarbazole and ditolylamine, 4,40-(9H,90H-[2,30-bicarbazole]-9,90-diyl)bis(N,N-di-p-tolylaniline) (BCTA), was synthesized as the host material of blue emitting tris[1-(2,4-diisopropyldibenzo[b,d]furan-3-yl)-2-phenylimidazole] (Ir(dbi)3) triplet emitter. The strong hole transport character of BCTA compensated hole trapping effect of Ir(dbi)3 and optimized charge balance in the emitting layer, delivering 17.8% external quantum efficiency in the blue phosphorescent organic light-emitting diodes.

Keywords:Bicarbazole;Hole transport;Triplet host;High triplet energy;High efficiency

[References]

Baldo MA, O'Brien DF, You Y, Shoustikov A, Sibley S, Thompson ME, Forrest SR, Nature, 395(6698), 151 (1998)
Adachi C, Baldo MA, Thompson ME, Forrest SR, J. Appl. Phys., 90, 5048 (2001)
Zhuang J, Li W, Su W, Liu Y, Shen Q, Liao L, Zhou M, Org. Electron., 14, 2596 (2013)
Chang CF, Cheng YM, Chi Y, Chiu YC, Lin CC, Lee GH, Chou PT, Chen CC, Chang CH, Wu CC, Angew. Chem.-Int. Edit., 47, 4542 (2008)
Hsieh CH, Wu FI, Fan CH, Huang MJ, Lu KY, Chou PY, Yang YHO, Wu SH, Chen IC, Chou SH, Wong KT, Cheng CH, Chem.-Eur. J., 17, 9180 (2011)
Tamayo AB, Alleyne BD, Djurovich PI, Lamansky S, Tsyba I, Ho NN, Bau R, Thompson ME, J. Am. Chem. Soc., 125(24), 7377 (2003)
Su SJ, Gonmori E, Sasabe H, Kido J, Adv. Mater., 20(21), 4189 (2008)
Yamamoto H, Brooks J, Weaver MS, Brown JJ, Murakami T, Murata H, Appl. Phys. Lett., 99, 033301 (2011)
Zhang Y, Lee J, Forrest SR, Nat. Commun., 5, 5008 (2014)
Seo JA, Jeon SK, Gong MS, Lee JY, Noh CH, Kim SH, J. Mater. Chem. C, 3, 4640 (2015)
Yang JW, Lee JY, Org. Electron., 22, 74 (2015)
Kim JH, Hwang SH, Song W, Lee JY, Dyes Pigment., 122, 103 (2015)
Park HJ, Kim OY, Lee JY, Synth. Met., 176, 47 (2013)

[Referenced By]

[Related Articles]

[1] Baldo MA, O'Brien DF, You Y, Shoustikov A, Sibley S, Thompson ME, Forrest SR, Nature, 395(6698), 151 (1998)

[2] Adachi C, Baldo MA, Thompson ME, Forrest SR, J. Appl. Phys., 90, 5048 (2001)

[3] Zhuang J, Li W, Su W, Liu Y, Shen Q, Liao L, Zhou M, Org. Electron., 14, 2596 (2013)

[4] Chang CF, Cheng YM, Chi Y, Chiu YC, Lin CC, Lee GH, Chou PT, Chen CC, Chang CH, Wu CC, Angew. Chem.-Int. Edit., 47, 4542 (2008)

[5] Hsieh CH, Wu FI, Fan CH, Huang MJ, Lu KY, Chou PY, Yang YHO, Wu SH, Chen IC, Chou SH, Wong KT, Cheng CH, Chem.-Eur. J., 17, 9180 (2011)

[6] Tamayo AB, Alleyne BD, Djurovich PI, Lamansky S, Tsyba I, Ho NN, Bau R, Thompson ME, J. Am. Chem. Soc., 125(24), 7377 (2003)

[7] Su SJ, Gonmori E, Sasabe H, Kido J, Adv. Mater., 20(21), 4189 (2008)

[8] Yamamoto H, Brooks J, Weaver MS, Brown JJ, Murakami T, Murata H, Appl. Phys. Lett., 99, 033301 (2011)

[9] Zhang Y, Lee J, Forrest SR, Nat. Commun., 5, 5008 (2014)

[10] Seo JA, Jeon SK, Gong MS, Lee JY, Noh CH, Kim SH, J. Mater. Chem. C, 3, 4640 (2015)

[11] Yang JW, Lee JY, Org. Electron., 22, 74 (2015)

[12] Kim JH, Hwang SH, Song W, Lee JY, Dyes Pigment., 122, 103 (2015)

[13] Park HJ, Kim OY, Lee JY, Synth. Met., 176, 47 (2013)