On the thermoluminescence build-up in molecular crystals |
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Authors: | F. Aramu T. de Pascale V. Maxia G. Spano |
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Affiliation: | Instituto di Fisica Superiore dell''Università di Cagliari, Italy |
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Abstract: | Measurements were performed on the thermoluminescence build-up of phenanthrene crystals UV excited at liquid N2 temperature. Kinetic investigations show that the passage of electrons from excited molecules to traps takes place by means of a direct process, without the intervention of the conduction band states. Arguments are advanced to point out the possible role of Frenkel excitons in this process. |
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