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Ambipolar Charge Transport in “Traditional” Organic Hole Transport Layers
Author(s) -
Khademi S.,
Song J. Y.,
Wyatt P. B.,
Kreouzis T.,
Gillin W. P.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103830
Subject(s) - ambipolar diffusion , electron transport chain , materials science , organic semiconductor , charge (physics) , electron , chemical physics , optoelectronics , nanotechnology , electron mobility , physics , chemistry , biochemistry , quantum mechanics
Organic semiconductors are often labeled as electron or hole transport materials due to the primary role they perform in devices. However, despite these labels we have shown using time‐of‐flight that two of the traditional “hole transport materials” TPD and NPB are actually excellent electron transporters the electron transport properties of which are comparable to those for holes.