<P><B>Abstract</B></P> <P>A δ-carboline derived compound, 5-(3′-(9-carbazolyl)-[1,1′-biphenyl]-3-yl)pyrido[3,2-b]indole, was synthesized as a high triplet energy bipolar host material for blue phosphore...
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https://www.riss.kr/link?id=A107483036
2015
-
SCI,SCIE,SCOPUS
학술저널
24-28(5쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>A δ-carboline derived compound, 5-(3′-(9-carbazolyl)-[1,1′-biphenyl]-3-yl)pyrido[3,2-b]indole, was synthesized as a high triplet energy bipolar host material for blue phosphore...
<P><B>Abstract</B></P> <P>A δ-carboline derived compound, 5-(3′-(9-carbazolyl)-[1,1′-biphenyl]-3-yl)pyrido[3,2-b]indole, was synthesized as a high triplet energy bipolar host material for blue phosphorescent organic light-emitting didoes and it was compared with α-carboline derived host material with the same backbone structure. The δ-carboline derived host material showed better electron transport properties than the host with α-carboline due to better electron accepting properties. Therefore, the new host material reduced driving voltage and increased the power efficiency of blue phosphorescent organic light-emitting diodes compared to a standard host with α-carboline moiety. A high external quantum efficiency of 25.3% and a high power efficiency of 36.4lm/W were achieved in the blue phosphorescent organic light-emitting diodes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Better charge injection by δ-carboline than α-carboline. </LI> <LI> Low driving voltage and high power efficiency by carbazole–carboline compound. </LI> <LI> High triplet energy bipolar host material for blue phosphorescent organic light-emitting diodes. </LI> </UL> </P>
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