Charge Trapping in Molecularly Doped Polymers

概要

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Hole mobilities have been measured in di-p-tolylphenylamine doped poly(styrene) containing p-diethylaminobenzaldehyde diphenylhydrazone (DEH), an 0.32 eV trap. A DEH molar concentratnon of 10^<-5> decreases the mobility a factor of two. For concentrations in excess of 10^<-5>, the mobilities decrease with increasing concentration as approximateiy c^<-1.4>, the field and temperature dependencies remaining essentially unchanged. For concentrations excess of 10^<-1>, transport is dominated by trap-to-trap hopping and the mobility increases with increasing trap concentration. The results are discussed within the framework of the Hoesterey-Letson formalism and the recent simulations of Wolf et al. and Borsenberger et al.
社団法人応用物理学会の論文
1998-04-15