FUNCTIONAL PROPERTIES OF ELECTRONIC-OPTICAL CENTERS I N DISORDERED THIN FILMS OF POTASSIUM-TUNGSTEN OXIDE BRONZES

Abstract

The electronic mechanisms underlying the physics of the electrochromic effect (ECE) are considered us- ing the example of an amorphous thin film of oxide potassium-tungsten bronze, and the technology for obtain- ing such a film is briefly described.

Electrochemical and electrooptical investigations of the films obtained by vacuum condensation were carried out. The potentiodynamic current-voltage and light transmission characteristics, the change in the color rate in the potentiostatic mode at different potentials, the change in the color rate in the galvanostatic mode at differ- ent current densities, and the change in the color rate in the potentiodynamic mode were recorded. The functional properties of disordered thin films of complex tungsten oxides, which determine their use in certain optoelectronic devices, on the one hand, are determined by the physical properties of condensed solid-state systems, but, on the other hand, it is the study of functional properties in combination with physical properties that makes it possible to build atomic-structural models of the material in one device or another.