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Hole Transport in a Vapor Deposited Phenylenediamine Molecular Glass
Author(s) -
Borsenberger P. M.,
Shi J.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221910219
Subject(s) - van der waals force , dipole , amorphous solid , component (thermodynamics) , formalism (music) , chemistry , materials science , physics , molecule , thermodynamics , crystallography , organic chemistry , art , musical , visual arts
Abstract Hole mobilities have been measured in vapor deposited amorphous layers of N,N′‐bis(1‐naphthalenyl)‐N,N′‐diphenyl‐4,4′‐phenyldiamine (NPPDA) over a wide range of fields and temperature. The results are described within the framework of a formalism based on energetic disorder of the hopping sites. The variance of hopping site energies is 0.098 eV. The energy variance can be described by a model based on dipolar disorder. The model is based on the assumption that the total variance is comprised of a dipolar component and a van der Waals component. For NPPDA, the dipolar component is 0.080 eV and the van der Waals component is 0.067 eV.