Vibronic interactions in CsPbCl3xBr3(1-x) (x=0...1) and CsPbCl2J crystals

M. S. Pidzyrailo; S. V. Miagkota; Anatolii S. Voloshinovskii; Myroslava V. Kutsyk

doi:10.1117/12.266555

4 February 1997 Vibronic interactions in CsPbCl_3xBr_3(1-x) (x=0...1) and CsPbCl₂J crystals

M. S. Pidzyrailo, S. V. Miagkota, Anatolii S. Voloshinovskii, Myroslava V. Kutsyk

Proceedings Volume 2967, Optical Inorganic Dielectric Materials and Devices; (1997) https://doi.org/10.1117/12.266555
Event: International Conference on Advanced Optical Materials and Devices, 1996, Riga, Latvia

Abstract

Low temperature (T equals 5...80 K) reflection spectra at fundamental absorption edge and luminescence spectra have been measured for CsPbCl_3xBr_3(1-x) (x equals 0...1) and CsPbCl₂J crystals. Some exciton parameters were estimated. Namely, the exciton binding energy for the crystal row varies from 71 to 31 meV and the ground exciton radius does in range 10.4 - 15.7 angstrom. It was found that disordering effects were insignificant for the above mentioned solid solutions. The exciton nature change condition is not satisfied in case of halide replacing. Relaxation of the intrinsic electron excitation for the investigated crystals excited in range of fundamental absorption occurs through the following ways. It is the free and trapped exciton emission and also their scattering on LO-phonons for CsPbX₃ (X equals Cl,Br) single crystals, the trapped exciton emission for the CsPbCl_3xBr_{3(1- x}) (x equals 0...1) solid solutions and the trapped and self-trapped exciton emission for CsPbCl₂J crystals.

Citation Download Citation

M. S. Pidzyrailo, S. V. Miagkota, Anatolii S. Voloshinovskii, and Myroslava V. Kutsyk "Vibronic interactions in CsPbCl_3xBr_3(1-x) (x=0...1) and CsPbCl₂J crystals", Proc. SPIE 2967, Optical Inorganic Dielectric Materials and Devices, (4 February 1997); https://doi.org/10.1117/12.266555

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