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Updated: May 14, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
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High quantum efficiency blue phosphorescent organic light-emitting diodes using 6-position-modified
Chil Won Lee1, Jung-Keun Kim, Sung Hoon Joo
1Department of Polymer Science and Engineering, Dankook University 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea.
Abstract:
High quantum efficiency blue phosphorescent organic light-emitting diodes were developed using 6- position modified benzofuro[2,3-b]pyridine derivatives as host materials. Two high triplet energy host materials derived from benzofuro[2,3-b]pyridine modified with carbazole or 9-phenylcarbazole were synthesized and the device performances of the host materials were investigated. A high quantum efficiency of 24.3% was achieved using the benzofuro[2,3-b]pyridine host materials due to good charge balance and energy transfer.
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