Jahn-Teller distortion in the excited state of tellurium(IV) in Cs2MCl6 (M=Zr, Sn)

✍ Scribed by P.J.H. Drummen; H. Donker; W.M.A. Smit; G. Blasse

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 237 KB
• Volume: 144
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(88)87296-8

✦ Synopsis

The luminescence spectra of the diluted systems CszZrClb: Te4+ and Cs#Q,: Te4+ are reported at liquid-helium and room temperature. The shape of the excitation spectrum of the Te 4+ luminescence reveals a dynamic Jahn-Teller distortion in the excited state. At low temperatures the Te4+ emission shows a vibrational progression in the e8 mode. The same vibrational mode is derived from the temperature dependence of the splitting of the A excitation band. Vibrational structure is also observed in the B band of the excitation spectrum of Cs#nCl,: Te4+.