| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1441816 | Synthetic Metals | 2012 | 6 Pages |
Two soluble phosphorescent host materials, 1,4-bis(3,6-di([1,1′:3′,1″:3″,1‴:3‴,1⁗-quinquephenyl]-5″-yl)-9H-carbazol-9-yl)benzene (P-mPCCP) and 1,4-bis(3,6-bis(4,4″-di-tert-butyl-[1,1′:3′,1″-terphenyl]-5′-yl)-9H-carbazol-9-yl) benzene (T-mPCCP) derived form carbazole and m-terphenyl derivatives were designed and synthesized. These two hosts exhibit good solubility in common organic solvents and possess high glass transition temperature (Tg > 160 °C) and thermal stability. P-mPCCP and T-mPCCP as the host materials doped with the guest of fac-Ir(ppy)3, we fabricated phosphorescent organic light emitting diodes (PHOLED) by spin coating process. The turn-on voltage of P-mPCCP and T-mPCCP composing device was 4.0 and 7.0 eV and showed a maximum luminance of 21,100 and 3290 cd/m2 and a maximum luminance efficiency of 15.0 and 7.6 cd/A, respectively.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Soluble phosphorescent hosts derived form carbazole and m-terphenyl were synthesized. ► Two hosts exhibit good solubility in common organic solvents. ► They have high glass transition temperatures (Tg > 160 °C) and thermal stabilities. ► Phosphorescent organic light emitting diode Ir(ppy)3 was fabricated by spin coating. ► The device showed a luminance of 21,100 cd/m2 and an efficiency of 15.0 cd/A.
