Adiabatic and non-adiabatic small polaron hopping in molecularly doped polymers

摘要: Abstract New hole drift mobility measurements for the molecularly doped polymer DEH ( p -diethylaminobenzaldehyde-diphenyl hydrazone) in polycarbonate and literature data TPD (N,N′-diphenyl-N,N′-bis (3-methylphenyl)-[1,1′-biphenyl]-4,4′-diamine) are analyzed by a new procedure which separates functional dependence of on temperature molecular spacing ϱ. Our analysis indicates that ϱ arises from different sources. In DEH: it is due to an overlap integral, as normally expected. TPD: entirely activation energy , significant clue underlying microscopic hopping mechanism. These consistent with small polaron theory two regimes, non-adiabatic DEH:polycarbonate adiabatic polycarbonate.