Synthesis of dibenzofuran and dibenzothiophene derivatives as yellow host materials for phosphorescent organic light-emitting diodes

被引：2

作者：

Ryu, Soomin ^{[1
]}

Kim, Pyung Gang ^{[2
]}

Son, Minhwi ^{[2
]}

Ahn, Jihae ^{[1
]}

Seo, Sungyong ^{[1
,2
]}

机构：

[1] Pukyong Natl Univ, Dept Smart Green Technol Engn, Busan 48513, South Korea

[2] Pukyong Natl Univ, Dept Chem, Busan 48513, South Korea

来源：

SYNTHETIC METALS | 2024年 / 301卷

基金：

新加坡国家研究基金会;

关键词：

Carbazole; Phosphine oxide; Dibenzofuran; Dibenzothiophene; Triplet energy; Yellow phosphorescent device; HIGH TRIPLET ENERGY; BIPOLAR HOST; HIGH-EFFICIENCY; BLUE; CARBAZOLE; GREEN; EMISSION; MOIETIES; DESIGN;

D O I：

10.1016/j.synthmet.2023.117538

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel host materials containing dibenzofuran and dibenzothiophene, (5-(8-(9H-carbazole-9-yl)dibenzo[b,d] furan-2-yl)thiophene-2-yl)diphenylphosphine oxide (3, CFTPO) and (5-(8-(9H-carbazol-9-yl)dibenzo[b,d]thiophen-2-yl)thiophen-2-yl)diphenylphosphine oxide (4, CTTPO) were synthesized and employed as yellow host materials. The CFTPO host material had bipolar characteristics because it contained carbazole, dibenzofuran, and diphenylphosphine oxide charge transport units with triplet energy (2.56 eV), high external quantum efficiency (24.4%), and power efficiency (63.4 lm/W) in a yellow phosphorescent device. The CTTPO host material also had bipolar characteristics because it contained carbazole, dibenzothiophene, and diphenylphosphine oxide charge transport units with triplet energy (2.52 eV), high quantum efficiency (25.4%), and power efficiency (65.7 lm/W) in a yellow phosphorescent device.

引用

页数：8

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