Abstract
The energy level diagram of titanium in CdZnTe grown by the vertical Bridgman method has been investigated by using a variety of optical spectroscopy techniques: photoluminescence (PL), PL excitation (PLE) and deep level optical spectroscopy (DLOS). By PL spectroscopy, a broad emission band around 0.8 eV, with a double-peaked shape, is reported for the first time. PL and PLE results, combined with the DLOS data of the eV titanium-related electron trap lead us to (i) attribute the 0.8 eV emission band to the internal transition of the single donor and (ii) demonstrate that the state is split by the combined action of spin-orbit coupling and a strong dynamic Jahn-Teller effect. The double-peaked shape of the 0.8 eV emission band is interpreted as a combination of two recombination processes involving . A configuration coordinate diagram of ions is proposed. Finally the F centre has been identified in CdZnTe:Ti by PL; the threshold ionization energy of this centre is determined by PLE at 1.441 eV.
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.
