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P‐173: Improved Efficiency in Blue Fluorescent Organic Light‐emitting Devices Using Anthracene‐containing Dibenzofuran‐Type Host Materials
Author(s) -
Jeong Sook Hee,
Lee Kyung Hyung,
Lee Jun Yeob
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14316
Subject(s) - dibenzofuran , anthracene , moiety , quantum efficiency , electroluminescence , fluorescence , oled , materials science , photochemistry , optoelectronics , homo/lumo , chemistry , optics , nanotechnology , stereochemistry , organic chemistry , molecule , physics , layer (electronics)
A series of novel blue‐host materials based on anthracene have been synthesized and investigated in which, a π‐electron‐rich dibenzofuran moiety was introduced as a side group to finely adjust the HOMO/LUMO levels of the anthracene and enhance the ability of charge‐transport and injection. To explore the electroluminescent properties of these materials, blue devices of HATCN(30 wt%):BPBPA(40 nm)/BPBPA(10 nm)/PCZAC(10 nm)/Host(30 nm):t‐DABNA(3 wt%)/DBFTrz(5 nm)/ZADN(20 nm)/LiF(1.5 nm)/Al(200 nm) were fabricated. DFAP1 device showed maximum external quantum efficiency of 8.2% with a CIE color coordinate of (0.125, 0.107) and DFAP2 device showed maximum external quantum efficiency of 7.4% with a CIE color coordinate of (0.128, 0.090).