Resumen
The photoluminescence characteristics of undoped and TbCl3-doped zinc oxide films deposited by the spray pyrolysis technique are reported. Undoped films present the characteristic blue-green emission peak at ∼508 nm observed in single-crystal and powder ZnO. The TbCl3-doped films present a luminescence peak at ∼540 nm. The light emission of the doped films decreases with time of exposure of the sample to the excitation light. The phenomenon is interpreted in terms of a simple model in which a competitive process of hole trapping and phototrapping occurs at a radiative recombination center generated by the TbCl3.
Idioma original | Inglés |
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Páginas (desde-hasta) | 2378-2381 |
Número de páginas | 4 |
Publicación | Journal of Applied Physics |
Volumen | 63 |
N.º | 7 |
DOI | |
Estado | Publicada - 1988 |
Publicado de forma externa | Sí |