6533b828fe1ef96bd128843a
RESEARCH PRODUCT
Excitation processes of the blue luminescence in crystalline SiO 2 probed by synchrotron radiation measurements
Franco Mario GelardiAnatoly N. TrukhinRoberto BoscainoMarco CannasSimonpietro Agnellosubject
Range (particle radiation)ChemistryExcited stateExcitonSynchrotron radiationSpontaneous emissionAtomic physicsCondensed Matter PhysicsLuminescenceSpectroscopyExcitationdescription
Luminescence properties of crystalline α-quartz were investigated by time-resolved spectroscopy under pulsed synchrotron radiation excitation in the vacuum ultraviolet range. Our results evidence that two emission bands overlap at 2.7 eV, both being observed only at low temperature. The first contribution is excited by band-to-band transition and is related to the radiative recombination of a self trapped exciton occurring in a time scale of a few ms, the second is associated with defects induced in quartz by γ- and β-radiation, is excited at 7.6 eV and its lifetime is 3.6 ns at T = 10 K. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-03-01 | physica status solidi c |