The Excitation Wavelength Dependence of Adenine Cation Single Crystal Luminescence |
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Authors: | J. Plášek |
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Affiliation: | Institute of Physics of the Charles University , 5 Ke Karlovu, 121 16, Prague, 2, Czechoslovakía |
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Abstract: | The excitation wavelength dependence of luminescence measured in adenine cation crystals at 77 K is reported. The observed variations of all the luminescence parameters exhibit a marked correlation with a changing penetration depth of the excitation light. The alterations of luminescence intensity, vibronic structure of emission spectra, emission polarization and phosphorescence decay were attributed mainly to a variable contribution of the emission from local excited states which correspond to a different trap ensembles in the crystal bulk and near the surface, respectively. |
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