Design of electron blocking layer with electron stabilizing unit for improved efficiency and lifetime in blue fluorescent organic light-emitting diodes

Sook-Hee Jeong; Kyung Hyung Lee; Jun Yeob Lee

Journal of Industrial and Engineering Chemistry, Vol.74, 71-78, June, 2019

DOI10.1016/j.jiec.2019.02.004 Export Citation

Design of electron blocking layer with electron stabilizing unit for improved efficiency and lifetime in blue fluorescent organic light-emitting diodes

Sook-Hee Jeong, Kyung Hyung Lee, and Jun Yeob Lee^†

School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, South Korea

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Electron blocking materials for improved efficiency and lifetime in blue fluorescent organic lightemitting diodes were developed based on a molecular design to transport holes and withstand electron leakage. Two electron blocking materials, N,N-bis(4-(dibenzo[b,d]furan-4-yl)phenyl) [1,1' biphenyl]-4- amine (BPADBF) and N,N-bis(4-(dibenzo[b,d]furan-4-yl)phenyl)-9,9-dimethyl-9H-fluoren 2 amine (FADBF), were designed to have biphenylamine or fluorenylamine as the hole transport unit and phenyl substituted dibenzofuran as the electron stabilizing unit. They worked efficiently as the electron blocking materials of the deep blue fluorescent organic light-emitting diodes, increasing the external quantum efficiency from 6.1% to 7.2% and extending the lifetime by more than 50% up to 80% of the initial luminance.

Keywords:Blue device;Electron blocking layer;Lifetime;High efficiency

[References]

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Lee MT, Liao CH, Tsai CH, Chen CH, Adv. Mater., 17(20), 2493 (2005)
Culligan SW, Chen ACA, Wallace JU, Klubek KP, Tang CW, Chen SH, Adv. Funct. Mater., 16(11), 1481 (2006)
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Liu M, Li XL, Chen DC, Xie ZZ, Cai XY, Xie GZ, Liu KK, Tang JX, Su SJ, Cao Y, Adv. Funct. Mater., 25(32), 5190 (2015)
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Li GJ, Klimes K, Fleetham T, Zhu ZQ, Li J, Appl. Phys. Lett., 110, 113301 (2017)
Jung H, Kang S, Lee H, Yu YJ, Jeong JH, Song J, Jeon Y, Park J, ACS Appl. Mater. Interfaces, 10, 30022 (2018)
Yang LS, Meng HF, Chang YF, Lien CH, Zan HW, Horng SF, Duan L, Qiu Y, Luo CW, Org. Electron., 51, 6 (2017)
Song W, Lee JY, Kim TK, Lee YK, Jeong HI, Org. Electron., 57, 158 (2018)
Ichikawa M, Shibata H, Nukada K, Sato K, Koyama T, Taniguchi Y, Mol. Cryst. Liq. Cryst., 377, 65 (2002)
Kim TY, Lee KH, Lee JY, J. Mater. Chem. C, 6, 8472 (2018)
Kondakov DY, Philos. Trans.: Math., Phys. Eng. Sci., 373, 201403 (2015)

[Referenced By]

[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] Lamansky S, Djurovich P, Murphy D, Abdel-Razzaq F, Lee HE, Adachi C, Burrows PE, Forrest SR, Thompson ME, J. Am. Chem. Soc., 123(18), 4304 (2001)

[4] Uoyama H, Goushi K, Shizu K, Nomura H, Adachi C, Nature, 492(7428), 234 (2012)

[5] Zhang QS, Li J, Shizu K, Huang SP, Hirata S, Miyazaki H, Adachi C, J. Am. Ceram. Soc., 134, 14706 (2012)

[6] Wu SH, Aonuma M, Zhang QS, Huang SP, Nakagawa T, Kuwabara K, Adachi C, J. Mater. Chem. C, 2, 421 (2014)

[7] Zhang QS, Li B, Huang SP, Nomura H, Tanaka H, Adachi C, Nat. Photonics, 8, 326 (2014)

[8] Lee MT, Liao CH, Tsai CH, Chen CH, Adv. Mater., 17(20), 2493 (2005)

[9] Culligan SW, Chen ACA, Wallace JU, Klubek KP, Tang CW, Chen SH, Adv. Funct. Mater., 16(11), 1481 (2006)

[10] Tokito S, Iijima T, Suzuri Y, Kita H, Tsuzuki T, Sato F, Appl. Phys. Lett., 83, 569 (2003)

[11] Liu M, Li XL, Chen DC, Xie ZZ, Cai XY, Xie GZ, Liu KK, Tang JX, Su SJ, Cao Y, Adv. Funct. Mater., 25(32), 5190 (2015)

[12] Samal GS, Unni KNN, Bharat S, Gupta S, Deepak, Org. Electron., 10, 1201 (2009)

[13] Huang JH, Su JH, Li X, Lam MK, Fung KM, Fan HH, Cheah KW, Chen CH, Tian H, J. Mater. Chem., 21, 2957 (2011)

[14] Fukagawa H, Shimizu T, Ohbe N, Tokito S, Tokumaru K, Fujikake H, Org. Electron., 13, 1197 (2012)

[15] Li GJ, Klimes K, Fleetham T, Zhu ZQ, Li J, Appl. Phys. Lett., 110, 113301 (2017)

[16] Jung H, Kang S, Lee H, Yu YJ, Jeong JH, Song J, Jeon Y, Park J, ACS Appl. Mater. Interfaces, 10, 30022 (2018)

[17] Yang LS, Meng HF, Chang YF, Lien CH, Zan HW, Horng SF, Duan L, Qiu Y, Luo CW, Org. Electron., 51, 6 (2017)

[18] Song W, Lee JY, Kim TK, Lee YK, Jeong HI, Org. Electron., 57, 158 (2018)

[19] Ichikawa M, Shibata H, Nukada K, Sato K, Koyama T, Taniguchi Y, Mol. Cryst. Liq. Cryst., 377, 65 (2002)

[20] Kim TY, Lee KH, Lee JY, J. Mater. Chem. C, 6, 8472 (2018)

[21] Kondakov DY, Philos. Trans.: Math., Phys. Eng. Sci., 373, 201403 (2015)