Electrical conductivity of glasses in the Ag-As-Se-Te system

Abstract

The electrical conductivity of glasses in the Ag-As-Te-Se system is investigated by impedance spectroscopy for compositions lying along two joins, namely, Ag 0.2 -As 0.4 -(Te x -Se 1x ) 0.4 and (Ag 2 Se) 0.2 -[(As 2 Te 3 ) x -(As 2 Se 3 ) 1x ] 0.8 . The transport numbers are measured using the Wagner method. It is found that, in the glasses containing silver in large amounts, the electron-hole conduction is predominantly provided by electrons rather than by holes, as is usually observed in chalcogenide glasses.

Enhancement of electrical, thermal and mechanical properties of carbon nanotube additive Se 85 Te 10 Ag 5 glassy composites

“…Such significant change in the electrical conductivity at room temperature for CNT additive glass composites may be attributed to effect of highly conducting CNT. In Se 85 Te 10 Ag 5 glassy alloy the conductivity as reported by researchers [4,5,18] are due to Ag þ ion and somewhere reported mixed [10] i.e. ionic and electronic conductivity mechanism is suggested in case of Ag and Cu containing chalcogenide.…”

“…The interest stems because of its better application in optical recording and information processing during light induced effects [8] and also due to the drastically increased electrical conductivity of Ag-CGs which is applicable for solid electrolytes [9]. At present, considerable research interest is growing in the area of mixed electronic-ionic [10] conductors which is the mutual effect of the electron-hole and ionic mechanisms of charge transfer reported [11] in the Ag-As-Se-Te System.…”