DataVXACS Applied Materials & InterfacesPaper
journal article·2023-08-30

Highly Efficient Phosphorescent Organic Light-Emitting Diodes Using Benzo[4′,5′]imidazo[2′,1′:2,3]imidazo[4,5,1-jk]carbazole as a Rigid and Effective Electron Acceptor in Bipolar Host

Manish Mannulal Raikwar, Seung Chan Kim, Jinwon Sun, Changwoong Chu, Jun Yeob Lee

ACS Applied Materials & Interfaces· Volume 15· Issue 34
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Source abstract

Abstract

A novel bipolar host architecture was investigated to improve the external quantum efficiency (EQE) of green phosphorescent organic light-emitting diodes (PhOLEDs). The host was developed by incorporating carbazole as a hole-transport unit and fused rigid benzo[4′,5′]imidazo[2′,1′:2,3]imidazo[4, 5, 1- jk ]carbazole ( BzICz ) as a new electron transport unit. The primary goal of the BzICz -based host design was to achieve a high triplet energy and bipolar charge transport characteristics. The green PhOLEDs fabricated using the new BzICz and carbazole-based host demonstrated a high EQE of 26.6% due to their high triplet energy and good bipolar charge transporting characteristics.
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Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Republic of Korea

Materials Research Team, Display Research Center, Samsung Display, Yongin, Gyeonggi 17102, Republic of Korea

SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea

SKKU Institute of Energy Science and Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea

Funding

National Research Foundation of Korea · Samsung Display

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