Back to Search
Start Over
Two- and three-photon upconversion of LaOBr:Er3+
- Source :
-
Optical Materials . Aug2007, Vol. 29 Issue 12, p1840-1843. 4p. - Publication Year :
- 2007
-
Abstract
- Abstract: In this work, the LaOBr:Er3+ (0.1%) powders were prepared by solid state reaction. The structural properties of LaOBr:Er3+ were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Raman spectroscopy. The results show that LaOBr:Er3+ has low phonon energy, which indicate that LaOBr:Er3+ may have high luminescent efficiency. Under excitation into 4I11/2 level of Er3+ ions by 980nm laser, the two- and three-photon upconverted luminescence of LaOBr:Er3+ were recorded. The most intense emissions were come from the 2H11/2, 4S3/2 → 4I15/2 transitions. The upconversion mechanisms were studied in detail through laser power dependence, and results show that excited state absorption is responsible for the upconversion. The upconversion properties indicate that LaOBr:Er3+ may be used in upconversion phosphors. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09253467
- Volume :
- 29
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Optical Materials
- Publication Type :
- Academic Journal
- Accession number :
- 25490486
- Full Text :
- https://doi.org/10.1016/j.optmat.2006.10.016