Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5465743 | Thin Solid Films | 2017 | 7 Pages |
Abstract
Two host materials based on spiro[fluorene-9,8â²-indolo[3,2,1-de]acridine] derivatives were designed and synthesized by introducing the benzofuran/benzothiophene unit to the spiro [fluorene-9,8â²-indolo[3,2,1-de]acridine] unit. The two host materials exhibited high triplet energy level (> 2.65 eV) and the benzofuran-substituted derivative presented suitable glass transition temperature (> 130 °C). Their electrochemical and photo-physical properties were also determined. The green phosphorescent organic light-emitting diodes based on the two host materials obtained electroluminescence performances with external quantum efficiencies of 14.3 ± 0.1% and 11.9 ± 0.1%, respectively.
Related Topics
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Authors
Yi Chen, Bo Wang, Jinhai Huang, Lei Wang, Jianhua Su,