Perfluoro-1,3,5-tris(p-oligophenyl)benzenes: Amorphous Electron-Transport Materials with High-Glass-Transition Temperature and High Electron Mobility
✍ Scribed by Shingo Komatsu; Youichi Sakamoto; Toshiyasu Suzuki; Shizuo Tokito
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 141 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
Perfluoro-1,3,5-tris(p-quaterphenyl)benzene (PF-13Y) and perfluoro-1,3,5-tris(p-quinquephenyl)benzene (PF-16Y) have been synthesized and characterized. They showed higher glass transition temperatures compared with perfluoro-1,3,5-tris(pterphenyl)benzene (PF-10Y). Organic light-emitting diodes were fabricated using these materials as the electron-transport layers. PF-13Y and -16Y are better electron transporters than PF-10Y. The electron mobilities of PF-10Y and Alq 3 were measured by the time-of-flight technique. PF-10Y showed higher electron mobilities (10 À4 cm 2 /V s) and weaker electric field dependence compared with Alq 3 .