6533b7dafe1ef96bd126df84
RESEARCH PRODUCT
Exciton emission and defect formation in yttrium trifluoride
H. Von SeggernMarco KirmVladimir PankratovVladimir Pankratovsubject
TrifluoridechemistryIntrinsic luminescenceExcitonExcitation spectraRadiative decaychemistry.chemical_elementYttriumAtomic physicsThermal quenchingdescription
Two intrinsic emission bands at 220 and 280 nm have been detected in nominally pure YF3 powders at 10 K. Excitation spectra for both emissions have a sharp peak at 12 eV near the edge of interband transition. Observed emissions are assigned to the radiative decay of self-trapped excitons in YF3. The strong thermal quenching of intrinsic luminescence was observed at temperature above 120 K. It was supposed that non-radiative decay of self-trapped exciton at high temperatures lead to defect formation in YF3. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-01 | physica status solidi (c) |