Accession Number:

ADP011522

Title:

Thermally-Induced Structural Changes in Copper-Containing Chalcogenide Thin Films

Descriptive Note:

Corporate Author:

INSTITUTE OF PHYSICS NOVISAD (YUGOSLAVIA) FACULTY OF SCIENCES

Report Date:

2001-06-01

Pagination or Media Count:

4.0

Abstract:

Thin-film samples of the system CuxAsSe1.4I0.21-x, xl5 at, were prepared by the method of thermal evaporation on cold substrates in vacuum, using a specially constructed quartz cell as evaporation chamber. The method of transmission electron microscopy was employed to follow the structural changes taking place in the course of thermal treatment of the freshly deposited film samples. It was found that the contents of selenium and copper in the starting glass have a decisive role in determining the structure and properties of the material. The observed microgranular two-phase structures of thin films have a grain size of the order of 10 nm. Heating of the samples to the softening temperature yields the structural transformation in the films from the starting amorphous phase to a new amorphous phase. Also, the temperatures were determined at which partial crystallization takes place, resulting in the separation of crystalline centers of the elemental selenium.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE