Non-resonant X-ray/laser interaction spectroscopy as a method for assessing charge competition, trapping and luminescence efficiency in wide band-gap materials
| Autor: | Pieter Dorenbos, Winicjusz Drozdowski, L.J. De Vries, Adrie J. J. Bos, N.R.J. Poolton, J.T.M. de Haas, G.O. Jones, Jakob Wallinga, R.H. Kars |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Materials science
TL Biophysics Analytical chemistry Trapping engineering.material Biochemistry law.invention X-ray laser law OSL Spectroscopy business.industry Wide-bandgap semiconductor Diamond General Chemistry Condensed Matter Physics Laser Atomic and Molecular Physics and Optics Radioluminescence engineering Optoelectronics Charge carrier Luminescence business |
| Zdroj: | Journal of Luminescence 130 (2010) 8 Journal of Luminescence, 130(8), 1404-1414 |
| ISSN: | 0022-2313 |
| Popis: | Using a conventional fast-shuttered laboratory X-ray source in combination with pulsed laser diode modules, the possibilities for undertaking X-ray/laser interaction spectroscopy in wide band-gap luminescent materials are explored. It is shown that in such materials, a variety of X-ray/laser timing sequences can extract complimentary information regarding the charge-carrier trapping, de-trapping and recombination processes. The effects on the luminescence are illustrated for six example materials (YPO 4 :Ce,Sm, Lu 3 Al 5 O 12 :Pr, Al 2 O 3 :C, natural sodium feldspar NaAlSi 3 O 8 , cubic BN and type IIa natural diamond). By ramping the temperature from 10 to 320 K during repeated X-ray pump/laser-probe activation cycles, a rapid assessment can be made of the important thermally dependent changes to the charge carrier trapping competition processes. |
| Databáze: | OpenAIRE |
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