Thermal and Electrical Properties of Li20-V205-TeO2 Glassy System

1998 ◽  
Vol 548 ◽  
Author(s):  
E. Sanchez ◽  
C. A. Angell
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Solid State ◽  
Alkali Concentration ◽  
Oxide Glasses ◽  
Glassy System ◽  
Structural Correlation ◽  
Solid State Batteries ◽  
Thermal And Electrical Properties

ABSTRACTOxide glasses had receive a great deal of attention on the last couple of years because of their potentially high cationic transport. Interesting features have been found on Li20-V205-TeO2 glassy system. Such materials were prepared under open air at 800°C and traditional quenching. Glass formation was been found up to 45% alkali concentration on the V205-TeO2 binary system. Upon addition of Li20 the glass transition temperature lowered systematically up to values near 175°C. Structural correlation between glass transition and structure are made. Those materials show high promise as electrolytes for solid-state batteries applications.

scholarly journals Effect of Sn Incorporation on Physical Parameters of Sb-Se Glassy System

2020 ◽  
Vol 12 (4) ◽  
pp. 545-554
Author(s):  
R. Khajuria ◽  
A. Sharma ◽  
P. Sharma
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Band Gap ◽  
Bond Energy ◽  
Chalcogenide Glasses ◽  
Lone Pair ◽  
Physical Parameters ◽  
Glassy System ◽  
Almost All

The rationale of this study is to investigate band gap tailoring of Sb-Se-Sn chalcogenide glasses. This study has been accompanied by the assessment of various theoretical parameters such as average co-ordination number, Lone-pair of electrons, number of constraints, average heat of atomization, mean bond energy and glass transition temperature. It has been observed that almost all these physical parameters have been enhanced with the increase in tin (Sn) content except Lone-pair of electrons. The number of lone-pair electrons has been decreased with the increase in Sn content. The glass transition temperature has been observed to increase due to the addition of Sn atom in the Se-Sb glassy system. The band gap is decreasing with increase in Sn content due to overall decrease in the average single bond energy of the Sb-Se-Sn glassy system.  

Thermal Properties of Bi2O3-B2O3-ZnO Glass System

2006 ◽  
Vol 510-511 ◽  
pp. 578-581 ◽  
Author(s):  
Yu Jin Kim ◽  
Seong Jin Hwang ◽  
Hyung Sun Kim
Keyword(s):  
Glass Transition ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Lead Oxide ◽  
Lead Free ◽  
Oxide Glasses ◽  
Glass Formation Region ◽  
Formation Region ◽  
Lower Glass Transition Temperature

Oxide glasses having lower glass transition temperature are widely used in electric devices. The oxide glasses usually contain lead oxide. Recently, lead oxide glasses have been replaced with lead-free oxide glasses because of the environmental pollution. We investigated the thermal properties and the glass formation region in the Bi2O3-B2O3-ZnO ternary system. The results showed that the ratio of Tg/Tl of the bismate glasses is around 0.55, which is lower than the value of ratio 0.67, the two-third rule (Tg/ Tl=2/3)

Synthesis and Characterization of Novel Polyfluorene Derivatives

2013 ◽  
Vol 815 ◽  
pp. 443-447
Author(s):  
Li Di Zhou ◽  
Xiao Dan Hu ◽  
Shao Hong Wang ◽  
Zhao Xia Hou ◽  
Mei Han Wang
Keyword(s):  
Glass Transition ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Solid State ◽  
Coupling Reaction ◽  
Synthesis And Characterization ◽  
Sonogashira Coupling ◽  
Sonogashira Coupling Reaction

A novel series of copolymers containing fluorene units are synthesized by Sonogashira coupling reaction in mild condition. Benzene, naphthalene and anthracene are co-polymerized with ethynylfluorene, respectively. The structures are confirmed by NMR, Mass, Elemental analysis and GPC. The polymers have good thermal properties with glass-transition temperature of 90-155°C(Tg), and they have bandgaps from 2.21-2.77 eV. The results of photoluminescence in solid state show that introduction of huge chromophore could effectively suppress the formation of aggregates and excimers which typically cause red-shifted or new emission.

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