Abstract
The growth, structure and spectral properties of a Cr4+:Ca2GeO4 single crystal have been reported in this paper. XPS analysis demonstrated that the chromium in the single crystal is tetravalent; this is further confirmed by fluorescence spectroscopy. The near-infrared, visible absorption and near-infrared luminescence spectrum of the Cr4+:Ca2GeO4 crystal are presented in this paper. In the absorption spectra, the transitions from the 3A2 ground state to the three orbital components of the 3T1 and 3T2 excited state are observed. The range of the fluorescence spectroscopy band of the Cr4+:Ca2GeO4 crystal at room temperature is from 1000nm to 1600nm. The single band with a maximum peak at 1317nm at room temperature is attributed to the 3T2→3A2 transition of the Cr4+ ions. The FWHM of the fluorescence spectrum is 201.19nm, and the fluorescence lifetime and emission cross section are up to 12μs and 4.61×10−19cm2, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
