Kovalenko O. Spectroscopy of thin films of complex compoundson the basis of copper and alkali halides.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U000560

Thesis Registration Form

0400U000560.pdf

Applicant for

Specialization

  • 01.04.05 - Оптика, лазерна фізика

11-02-2000

Specialized Academic Board

Д64.051.03

Essay

The optical spectra of 9 compounds in system CuHal-MeHal (Me=Cs,Rb; Hal=I,Cl). were studied, and the connection of spectra with crystalline structure of compounds was established. If is shown that in studied compounds electronic excitations and excitons are localised in Cu-Hal- sublattice. The excitons in iodides of ternary compounds obey to Vannier-Mott'model, while in chlorides the features of Frencel excitons are displayed. The temperature change of the excitonic bands'parameters was studied at the phase transition from a lowtemperature dielectrical to superionic state of compounds.

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