Hole trapping in molecularly doped polymers

✍ Scribed by P. M. Borsenberger; W. T. Gruenbaum; E. H. Magin; S. A. Visser; D. E. Schildkraut

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 197 KB
• Volume: 37
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19990215)37:4<349::aid-polb8>3.0.co;2-m

✦ Synopsis

Hole mobilities have been measured in di-p-tolylphenylamine-doped poly-(styrene) containing 1-phenyl-3-p-diethylaminostyryl-5-p-diethylamino-phenylpyrazoline (DEASP), an 0.38 eV trap. For molar concentrations of less than a few multiples of 10 Ϫ7 , DEASP has no effect on the mobility. For concentrations in excess of 10 Ϫ6 , the mobility decreases with concentration as c Ϫ 1.5 . A concentration of 10 Ϫ3 suppresses the trap-free mobility by approximately 5 orders of magnitude. The results are described within the framework of a formalism due to Hoesterey-Letson and the recent simulations of Wolf et al. and Borsenberger et al.