Title: LUMINESCENT KINETIC CHARACTERISTICS OF CSPBCL$_3$ AGGREGATES DISPERSED IN RB$_{1-X}$CS$_{X}$CL ($X=0.05\DIV 0.2$) MATRICES
Author(s): S.Myagkota, A.Gloskovskii, R.Gladyshevskii, A.Voloshinovskii (Ivan Franko National University of Lviv, 8 Kyryla i Mefodiya Str., 79005 Lviv, Ukraine; E-mail: lumi@franko.lviv.ua)

The luminescent kinetic parameters of the CsPbCl$_{3 }$ nanocrystals dispersed in matrices of solid solutions Rb$_{1-x}$Cs$_{x}$Cl ($x=0.05 \div 0.2$) were studied under pulse synchrotron radiation excitation. Formation of CsPbCl$_{3}$ nanocrystals is confirmed by manifestation of the quantum size effect, which is displayed by a short-wave shift of the exciton luminescence maximum and an essential shortening of the luminescence decay time for of CsPbCl$_{3}$ nanocrystals as compared to that for an excitonic luminescence of a bulk single crystal CsPbCl$_{3 }$. For the first time, using the atomic force microscopy method, the lead-containing nanocrystals embedded in a matrix of the Rb$_{0.95}$Cs$_{0.05}$Cl solid solution have been directly observed.

Key words: nanocrystal, quantum size effect, luminescent kinetic parameters, topology of crystal cleavage surface, atomic force microscopy
PACS:32.50.+d, 87.15.Mi, 78.60.-b, 33.50.-j