The Photoluminescence Spectra of Single Crystals of SrCl2:Yb+2
Highly complex luminescence behavior is exhibited by single crystals of SrCl2:Yb+2 when excited by near-ultraviolet radiation. The photoluminescence characteristics of the system were established on the basis of decay-time measurements and studies of the temperature dependence of emission intensities. Two of the five bands observed at low temperatures are assigned to 4f14←4f135d transitions of the Yb+2 ion. The centers responsible for the other three bands have not yet been identified, but they appear to involve ytterbium in some form. One of these bands corresponds to the well-known green emission of CaF2:Yb+2, but is not due to a transition from a level of the configuration of Yb+2, as has been suggested.
KeywordsLower Excited State Zero Phonon Line Defect Band Strontium Chloride Divalent Rare Earth
Unable to display preview. Download preview PDF.
- 3.P. P. Feofilov, Opt. i Spektroskopiya 1 992 (1956).Google Scholar
- 4.A. A. Kaplyanskii and P. P. Feofilov, Opt. i Spektroskopiya 13 235 (1962).Google Scholar
- 5.H. A. Weakliem, to be published in Phys. Rev.Google Scholar
- 8.H. Witzke, unpublished.Google Scholar
- 10.Air Products and Chemicals, Inc., Allentown, Pa.Google Scholar
- 12.H. Witzke, D. S. McClure and B. Mitchell, to be published.Google Scholar
- 15.M. V. Eremin, Opt. i Spektroskopiya 29. 100 (1970).Google Scholar