Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses

Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses

Bibliographic Details
Main Author: Holbrook, Chad Monroe
Language:English
Published: University of Cincinnati / OhioLINK 2007
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715
id ndltd-OhioLink-oai-etd.ohiolink.edu-ucin1187051715
record_format oai_dc
spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ucin11870517152021-08-03T06:12:09Z Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses Holbrook, Chad Monroe The electrical conductivity of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses increases to display a step-like jump of nearly 5 orders of magnitude in the narrow composition range, 9% < x < 15% range. To elucidate the origin of this threshold behavior, we have now examined the molecular structure of these glasses in Modulated-Differential Scanning Calorimetry (MDSC) and Raman scattering experiments. Our MDSC results reveal bimodal T<sub>g</sub>s (low-T<sub>g</sub>, high-T<sub>g</sub>) in the 8% < x < 40% range but unimodal ones outside this range. The low-T<sub>g</sub> phase bears a similarity to that of the stoichiometric glass at x = 1/2, or AgAsS<sub>2</sub>, and we identify it with a Ag-rich phase formed in these glasses once x >8%. The Ag-rich phase is thought to percolate near x~9%, and to contribute to the large jump in conductivity of the glasses. The high-T<sub>g</sub> phase represents a semiconducting As2S3 glass phase alloyed with a few mole percent of Ag<sub>2</sub>S, and it displays a reversibility window in the 8% < x < 13% range. The semiconducting phase becomes elastically flexible once x > 13%. Softening of the high T<sub>g</sub> phase lowers Ag<sup>+</sup> ion migration energies and also contributes to the conductivity threshold. 2007-10-08 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
author Holbrook, Chad Monroe
spellingShingle Holbrook, Chad Monroe
Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
author_facet Holbrook, Chad Monroe
author_sort Holbrook, Chad Monroe
title Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
title_short Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
title_full Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
title_fullStr Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
title_full_unstemmed Characterization and Solid Electrolyte behavior of (Ag<sub>2</sub>S)<sub>x</sub>(As<sub>2</sub>S<sub>3</sub>)<sub>1-x</sub> glasses
title_sort characterization and solid electrolyte behavior of (ag<sub>2</sub>s)<sub>x</sub>(as<sub>2</sub>s<sub>3</sub>)<sub>1-x</sub> glasses
publisher University of Cincinnati / OhioLINK
publishDate 2007
url http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715
work_keys_str_mv AT holbrookchadmonroe characterizationandsolidelectrolytebehaviorofagsub2subssubxsubassub2subssub3subsub1xsubglasses
_version_ 1719432656321511424

Similar Items