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On the nature of trapping levels in anthracene crystals from the study of thermally stimulated currents

Research paper by G. Apeilesi, T. Garofano, F. Nava, M. Santangelo

Indexed on: 26 Jan '08Published on: 26 Jan '08Published in: Il Nuovo Cimento B (1971-1996)



Abstract

With T.S.C. measurements on anthracene crystals it is possible to obtain useful information on trapping levels. We have examined the trapping energy level withE = (0.75+-0.07) eV in anthracene crystals. A kinetic model for the interpretation of the monomolecular shape of T.S.C. signals has been proposed. The values of the trap parameters have been obtained. Such values confirm the assumption that we are dealing with an anthracene molecular level. We check that the energy level studied traps positive carriers and we obtain information on the distribution of carriers trapped near the illuminated surface of the anthracene crystal.