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(Draft version)
(2) Carrier transport. (In amorphous organic semiconductors)
OLED materials are conjugated (the bonds between the carbon atoms are
alternately single and double). The p electrons are completely delocalized
along the conjugated carbons. Hence, their charge transport properties can be
affected by the p - p* molecular orbital overlap. However, the overlap of
molecular orbitals and intermolecular electron exchange are much smaller than
their inorganic counterpar |
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