Charge transport in the supercooled liquid state of 4-diphenylamino-benzaldehyde methylphenylhydrazone (Tg=30°C) and 4-diethylaminobenzaldehyde diphenylhydrazone (Tg=8°C) has been studied and compared with that in their molecular glasses. The hole drift mobility of the supercooled liquid state in the temperature region above Tg was smaller than that predicted from the temperature dependence of the hole drift mobility of the glass in the region below Tg. The electric-field and temperature dependencies of the hole drift mobility were analyzed in terms of the disorder formalism.
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Nomura et al. (1998) studied this question.
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