| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9586123 | Journal of Luminescence | 2005 | 7 Pages |
Abstract
Time-resolved photoluminescence (PL) was performed to investigate the decay of blue-green luminescence in MCM-41 nanotubes. The PL decay exhibits a clear nonexponential profile, which can be fitted by a stretched exponential function. In the temperature range from 50 to 300Â K the photogenerated carriers become thermally activated with a characteristic energy of 29Â meV, which is an indication of the phonon-assisted nonradiative process. The temperature dependence of the lifetime of PL decay has been explained using a model based on the radiative recombination of localized carriers and the phonon-assisted nonradiative recombination.
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Authors
Y.C. Lee, Y.L. Liu, C.K. Wang, J.L. Shen, P.W. Cheng, C.F. Cheng, C.-H. Ko, T.Y. Lin,