Temperature dependent electronic conduction in semiconductors

Impurity dephasing by optical modes in polymers and glasses

Electric-field-independent electron mobilities in anthracene

Electric-field dependent electron mobility in anthracene single crystals

The model proposed by the present author [J Chem Phys 70, 3775 (1979)] explained successfully the almost‐temperature‐independent electron mobilities in the c′ direction of anthracene and napthalene in the high temperature region The present work extends the model to reproduce observed varieties in the temperature dependence of the c′ mobilities below ambout 130 °K under experimentally realistic conditions of high electric fields and nonvanishing defect scattering of electrons It is ascribed to defect‐scattering effects that the observed temperature dependence of the electron mobility along the (a,b) plane of anthracene becomes gradual towards low temperatures It is predicted that for kBT ≲h/ω2 (the energy of rotational vibations which induce an additional transfer integral of electron in the c′ direction) the drift velocity in the c′ direction should become saturated with electric field, F, when the consequent energy difference, eFa, between neighboring (a,b) planes exceeds h/ω2 It is also predicte

Theory of electrical conduction in organic molecular crystals. II. Characteristic effects of electric field and defect scattering on temperature‐independent mobilities

H. Sumi

Papers

Anomalous electric-field dependence of the temperature-independent electron mobilities in organic molecular crystals