Deep blue phosphorescent organic light-emitting diodes with excellent external quantum efficiency

Park, Jungeun; Oh, Hankook; Oh, Sihyun; Kim, Jinho; Park, Hyun Jin; Kim, Oh Young; Lee, Jun Yeob; Kang, Youngjin

doi:10.1016/j.orgel.2013.09.017

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Deep blue phosphorescent organic light-emitting diodes with excellent external quantum efficiency

Park, Jungeun;
Oh, Hankook;
Oh, Sihyun;
Kim, Jinho;
Park, Hyun Jin;
... Kang, Youngjin;
외 2명

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29

초록

Highly efficient deep blue phosphorescent organic light-emitting diodes (PHOLEDs) using two heteroleptic iridium compounds, (dfpypy)(2)Ir(acac) and (dfpypy)(2)Ir(dpm), as a dopant and 9-(3-(9H-carbazol-9-yl) phenyl)-9H-carbazol-3-yl) diphenylphosphine oxide as a host material have been developed. The electroluminescent device of (dfpypy)(2)Ir(dpm) at the doping level of 3 wt% shows the best performance with external quantum efficiency of 18.5-20.4% at the brightness of 100-1000 cd/m(2) and the color coordinate of (0.14, 0.18) at 1000 cd/m(2). (C) 2013 Elsevier B.V. All rights reserved.

키워드

Phosphorescent organic light-emitting diodes (PHOLEDs); Heteroleptic iridium(III) complex; Deep-blue triplet emitter; External quantum efficiency; ENERGY-GAP; DEVICES; ELECTRON; ELECTROPHOSPHORESCENCE

제목: Deep blue phosphorescent organic light-emitting diodes with excellent external quantum efficiency

저자: Park, Jungeun; Oh, Hankook; Oh, Sihyun; Kim, Jinho; Park, Hyun Jin; Kim, Oh Young; Lee, Jun Yeob; Kang, Youngjin

DOI: 10.1016/j.orgel.2013.09.017

발행일: 2013-12

유형: Article

저널명: Organic Electronics

권: 14

호: 12

페이지: 3228 ~ 3233