Accession Number:

ADP011541

Title:

Donor- and Acceptor-Like Center Revealing by Photoconductivity of Amorphous Thin As2Se3 Films

Descriptive Note:

Corporate Author:

MOLDOVA ACADEMY OF SCIENCES KISHINEV INST OF APPLIED PHYSICS

Personal Author(s):

• Andriesh, A. M.
• Verlan, V. I.

Report Date:

2001-06-01

Pagination or Media Count:

4.0

Abstract:

Measurements of photoconductivity and relaxation of positive and negative charge in amorphous thin As2 Se3 layers are discussed. Photosensitive donor and acceptor like centers of 1.05 eV and 0.76 eV energies from valence band were revealed. These energies are constant and independent of light intensity in the range l.5x109 - l.5xlO15 quantacm2s and of energy of quanta. Wide quasicontinuously distribution trap centers with maximums at 0.62, 0.87 and 1.05 eV were found by relaxation measurements of positive and negative charge.

Descriptors:

• *PHOTOCONDUCTIVITY
• SYMPOSIA
• THIN FILMS
• LIGHT
• AMORPHOUS MATERIALS
• SEMICONDUCTORS
• CHARGED PARTICLES
• VALENCE BANDS
• RELAXATION
• PHOTOSENSITIVITY
• MOLDOVA

Subject Categories:

• Electrooptical and Optoelectronic Devices
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE