Small molecular host based on carbazole and m-terphenyl derivatives for efficient solution processed organic light-emitting diodes
| Autor: | Akihide Kitamura, Dong Ryeol Hwang, Xu Lin, Young-Seo Park, Jang-Joo Kim, Takashi Karatsu, Soo Young Park, Shiki Yagai |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Organic electronics
Spin coating Carbazole Mechanical Engineering Metals and Alloys Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry Mechanics of Materials law Terphenyl Materials Chemistry OLED Physical chemistry Organic chemistry Phosphorescent organic light-emitting diode Thermal stability Phosphorescence |
| Zdroj: | Synthetic Metals. 162:303-308 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2011.12.010 |
| Popis: | Two soluble phosphorescent host materials, 1,4-bis(3,6-di([1,1′:3′,1″:3″,1‴:3‴,1⁗-quinquephenyl]-5″-yl)-9 H -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)-9 H -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 ( T g > 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/m 2 and a maximum luminance efficiency of 15.0 and 7.6 cd/A, respectively. |
| Databáze: | OpenAIRE |
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