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Intermolecular Charge-Transfer Excitation in C60Films: Evidence from Luminescence and Photoconductivity

S. Kazaoui, R. Ross, and N. Minami
[Phys. Rev. B, Vol.52, p.R11665, 1995]

C60films have been investigated by means of optical absorption, luminescence, and electric-field-induced luminescence quenching, as well as with steady-state photoconductivity spectroscopies. The drop of the luminescence yield, the increase of the electric-field-induced luminescence-quenching efficiency, and the sharp increase of the photocarrier-generation efficiency above 2.3 eV, are interpreted in terms of branching either in the excitation or relaxation processes involving intermolecular charge-transfer excited states.

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