Abstract

AbstractStarting from the needed simplification of the problem a model is proposed, approximating the real crystal by molecule stacks, consisting of perfectly conducting molecule discs. In this way a band scheme is found, very similar t o the observed one. On the understanding that molecule stacks break off within the crystal and considering the molecule spatial extent and molecule orientation in CuPc, the perturbation levels in the crystals are computed. They are found in a good agreement with experimentally determinedtrap levels for electrons. The geometrical extent of the perturbation justifies the neglect of the perturbation interaction between adjacent piles.

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