Optical absorption and thermal expansion of semiconductor glasses As-S-Ge by topological transition

D. Tsiulyanu; N. Gumenyuk; S. Marian

doi:10.1117/12.226198

3 November 1995 Optical absorption and thermal expansion of semiconductor glasses As-S-Ge by topological transition

D. Tsiulyanu, N. Gumenyuk, S. Marian

Proceedings Volume 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics; (1995) https://doi.org/10.1117/12.226198
Event: International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, 1995, Kiev, Ukraine

Abstract

The effect of mean coordination number r on the optical absorption in the region of exponential tail and on the thermal expansion of chalcogenide glasses As-S-Ge are presented. Several important parameters such as optical gap, disorder energy, coefficient of the temperature expansion and their variation with composition have been found. These parameters are shown to be strongly influenced by average coordination number, especially in the region of topological transitions. It is significant that all these parameters exhibit maximums at r approximately equal to 2.7. The explanation is put forward in light of a model which predicts the transformation of the glassy network from two- to three- dimensional configuration at r approximately equal to 2.7. The correlation between optical gap (i.e. intrinsic absorption) and thermal expansion of the glasses shows the possibilities of absorption spectroscopy for testing the properties of non-crystalline materials including the thermo-mechanical ones.

Citation Download Citation

D. Tsiulyanu, N. Gumenyuk, and S. Marian "Optical absorption and thermal expansion of semiconductor glasses As-S-Ge by topological transition", Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); https://doi.org/10.1117/12.226198

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Absorption

Thermography

Chemical species

Germanium

Glasses

Semiconductors

Absorption spectroscopy

Show All Keywords

Keywords/Phrases

Search In:

Publication Years