The absorption spectra of thin films of ternary compounds in the RbI–PbI2 system

The absorption spectra of thin films of ternary compounds in the RbI–PbI2 system

Formation of compounds RbPbI3 and Rb4PbI6 in the RbI–PbI2 system is revealed, and their absorption spectra are investigated in an energy interval of 2–6 eV and at temperatures from 90 to 500 K. It is established that the low-frequency exciton excitations are localized in PbI6 4− structural elements...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2012-10, Vol.38 (10), p.943-947
Hauptverfasser: Yunakova, O. N., Miloslavskii, V. K., Kovalenko, E. N., Ksenofontova, E. V.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption spectra
Excitation spectra
Intervals
Joining
Low temperature physics
Structural members
Thin films
Three dimensional
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Formation of compounds RbPbI3 and Rb4PbI6 in the RbI–PbI2 system is revealed, and their absorption spectra are investigated in an energy interval of 2–6 eV and at temperatures from 90 to 500 K. It is established that the low-frequency exciton excitations are localized in PbI6 4− structural elements of the crystal lattice, they are classified as excitons of intermediate coupling and are of a three-dimensional character in RbPbI3 and a quasi-two-dimensional one in Rb4PbI6.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.4758777