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標題: Transport properties of orbitally hybridized organic semiconductors
作者: Sun, S.J.
Lin, C.Y.
Yu, C.F.
關鍵字: thin-film transistors;conjugated polymers;charge-transport;interfaces
Project: European Physical Journal B
期刊/報告no:: European Physical Journal B, Volume 83, Issue 2, Page(s) 173-179.
A microscopic theory based on the orbital hybridization model via single orbital approximation is developed to calculate the current variation in organic semiconductors that are coupled to the external orbits from the environment. The charge transfer resulted from the orbital hybridization between the environment and the organic semiconductor rebuilds the energy levels and eventually alters the transport properties of the organic semiconductor. Two parameters in our theory, the orbital energy level of the environment relative to the energy level of organic semiconductor and the orbital hybridization interaction, dominate the current variation in the organic semiconductors. Our results show that the suppression of atomic dimerization due to orbital hybridization gives rise to an increase of electrical conduction in organic semiconductor. Also, after coupling with the environment, the charge-donating organic semiconductors are more conductive than the charge-accepting ones.
ISSN: 1434-6028
DOI: 10.1140/epjb/e2011-20253-4
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