ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 Effects of Charge Balance on Device Performances in Deep Blue Phosphorescent Organic Light-Emitting Diodes
Cited 44 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
저자
이종희, 이정익, 이주원, 추혜용
발행일
201007
출처
Organic Electronics, v.11 no.7, pp.1159-1164
ISSN
1566-1199
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.orgel.2010.04.014
협약과제
09MB7400, 고효율 백색 OLED 소자 기술 개발, 추혜용
초록
The performances of deep blue phosphorescent organic light-emitting diodes (PHOLEDs) have been investigated by changing the combination and the composition of host materials in a mixed host emissive layer (EML). An electron transport-type host material of m-bis- (triphenylsilyl)benzene (UGH3), was combined with an hole transport-type host materials, N,N??-dicarbazolyl-3, 5-benzene (mCP) or 4,4??,4?꿎??-tris(N-carbazolyl)triphenylamine (TcTa) both doped with a deep blue electro-phosphorescent dopant of iridium(III)bis(40,60-difluorophenylpyridinato) tetrakis(1-pyrazolyl)borate (FIr6). We found that a mixed host structure was effective to control the charge carrier injection and transport in EML. Therefore, we obtained highly improved efficiency in deep blue PHOLEDs with peak external quantum and luminance efficiencies of 22.9% and 39.2 lm/W with maintaining Commission Internationale de L'Eclairage (CIE) coordinates of (x = 0.163, y = 0.287). © 2010 Elsevier B.V. All rights reserved.
키워드
Deep blue, Mixed host structure, Organic light-emitting diodes (OLEDs), Phosphorescent, Roll-off
KSP 제안 키워드
Carrier injection and transport, Charge carrier injection, Deep blue phosphorescent organic light-emitting diodes, Electron Transport, Hole transport, Improved efficiency, Organic light-emitting diodes(OLEDS), Roll-off, blue PHOLEDs, charge balance, emissive layer(EL)