Accession Number:

ADP011507

Title:

New Ag-Containing Amorphous Chalcogenide Thin Films - Prospective Materials for Rewriteable Optical Memories

Descriptive Note:

Corporate Author:

PARDUBICE UNIV (CZECHOSLOVAKIA)

Report Date:

2001-06-01

Pagination or Media Count:

6.0

Abstract:

The technique of step-by-step optically-induced diffusion and dissolution OIDD of Ag with As33 S67 amorphous films has allowed to design films with exact silver concentration. The photodoped films with a silver concentration of 25 at., i.e. with composition of the stoichiometric AgAsS2 compound were prepared. The host As33S67 films were photodoped by consecutive dissolving thin 10 nm layer of silver, which resulted in a single-phase optically homogeneous films. We have analyzed affect of the silver doping in the host material on optical, thermal properties, and its structure by means of optical spectroscopy, temperature- modulated differential scanning calorimetry and Raman spectroscopy respectively. Application of such films can be foreseen for rewritable high resolution optical memories reversible phase change amorphous-crystalline or film optical surface nanoshaping in dependence on intensity and silver concentration. The surface structure of optically shaped films were studied by atomic force microscopy.

Subject Categories:

  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE