Emission color management of dual emitting organic light-emitting diodes by selective switching of phosphorescence through host engineering

Ho Jin Jang; Cho Rong Kim; Jun Yeob Lee

Journal of Industrial and Engineering Chemistry, Vol.98, 270-274, June, 2021

DOI10.1016/j.jiec.2021.03.044 Export Citation

Emission color management of dual emitting organic light-emitting diodes by selective switching of phosphorescence through host engineering

Ho Jin Jang, Cho Rong Kim, and Jun Yeob Lee^†

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

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A device approach to manage the emission color of the organic light-emitting diodes (OLEDs) which show two emission processes of thermally activated delayed fluorescence (TADF) and phosphorescence was developed by engineering the host of the emitter. The emitting material was phenyl(10-phenyl-10H-phenoselenazin-3-yl)methanone (PSeBz) which emitted at 496 nm by TADF process and at 559 nm by phosphorescence process. The phosphorescence of the PSeBz emitter was selectively switched by the host because the triplet excitons can be intentionally quenched by the low triplet energy host. Therefore, the color coordinate of the OLEDs could be tuned from (0.35, 0.52) to (0.41, 0.52) by just changing the host of the PSeBz emitter.

Keywords:OLED;TADF;Phosphorescence;Emission color

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[2] Chi Y, Chou PT, Chem. Soc. Rev., 39(2), 638 (2010)

[3] Leitl MJ, Krylova VA, Djurovich PI, Thompson ME, Yersin H, J. Am. Chem. Soc., 136(45), 16032 (2014)

[4] Minaev B, Baryshnikov G, Agren H, Phys. Chem. Chem. Phys., 16(5), 1719 (2014)

[5] You Y, Park SY, Dalton Trans., 8, 1267 (2009)

[6] Ganesan P, Chen DG, Liao JL, Li WC, Lai YN, Luo D, Chang CH, Ko CL, Hung WY, Liu SW, Lee GH, Chou PT, Chi Y, J. Mater. Chem. C, 6(37), 10088 (2018)

[7] Ohsawa T, Sasabe H, Watanabe T, Nakao K, Komatsu R, Hayashi Y, Hayasaka Y, Kido J, Adv. Opt. Mater., 7(5) (2019)

[8] Tanaka H, Shizu K, Miyazaki H, Adachi C, Chem. Comm., 48, 11392 (2012)

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

[10] Zhang Q, Li B, Huang S, Nomura H, Tanaka H, Adachi C, Nat. Photonics, 8(4), 326 (2014)

[11] Zhan L, Chen Z, Gong S, Xiang Y, Ni F, Zeng X, Xie G, Yang C, Angew. Chem.-Int. Edit., 58(49), 17651 (2019)

[12] Huang R, Avo J, Northey T, Chaning-Pearce E, dos Santos PL, Ward, JS, et al.,, J. Mater. Chem. C, 5(25), 6269 (2017)

[13] Data P, Takeda Y, Chem. Asian J, 14(10), 1613 (2019)

[14] Bhattacharjee I, Acharya N, Ray D, Chem. Comm., 55, 1899 (2019)

[15] Bhattacharjee I, Acharya N, Bhatia H, Ray D, J. Phys. Chem. Lett., 9(11), 2733 (2018)

[16] Kim CL, Jeong J, Lee DR, Jang HJ, Kim ST, Baik MH, Lee JY, J. Phys. Chem. Lett., 11(14), 5591 (2020)

[17] Han SH, Park YH, Lee JY, Adv. Opt. Mater., 6(24) (2018)

[18] Song W, Lee JY, J. Phys. D-Appl. Phys., 48(36) (2015)

[19] Bagnich SA, Rudnick A, Schroegel P, Strohriegl P, Kohler A, Philos. Trans. A. Math. Phys. Eng. Sci., 373(2044) (2015)

[20] Hirata S, Totani K, Zhang J, Yamashita T, Kaji H, Marder SR, Watanabe T, Adachi C, Adv. Funct. Mater., 23(27), 3386 (2013)

[21] Notsuka N, Kabe R, Goushi K, Adachi C, Adv. Funct. Mater., 27(40) (2017)