Structural transformation on Se0.8Te0.2 chalcogenide glass

Non-isothermal crystallization in Ga–Se–Ag chalcogenide glass by differential scanning calorimetry

“…During the past decades considerable attention has been devoted to explore the physical properties of Se based chalcogenide glasses because of their potential use in several technological fields. The enhance use of amorphous Se motivated several authors to improve its physical quantities, of low sensitivity and thermal instability, by alloying it with other elements [1][2][3]. The occurrence of crystallization during the heating of such systems is of special importance from the aspect of both fundamental research and application of these materials.…”

Glass transition and crystallization of Se95Te5 chalcogenide glassy semiconductor

“…As an alternative, tellurium being heavier, when used in conjunction with selenium, extends the infrared threshold 20μm. Se-Te alloys, renowned for their high photosensitivity, exhibit higher glass transition and crystallization temperatures and reduced aging effects compared to pure amorphous selenium [5].Several studies [6][7][8][9][10][11][12][13] have explored the transition processes of amorphous selenium and the Se-Te system from the glassy to crystalline state. In work [6] crystallization process of amorphous selenium were studied by the methods of measuring electrical conductivity and estimated numerical value of activation energy characterizing the crystallized state is about 0.78 eV.…”

“…In [7] the study of glass formation for non-crystalline selenium were investigated in bulk and film samples using DCS measurements, comparing the relation of structural relaxation rate with temperature. In works [8][9][10][11], the glass transition and crystallization in amorphous selenium and Se-Te chalcogenide glassy system containing 10 -30 at% of tellurium were studied and the results obtained were explained within model proposed by the author of works [12][13]. However, there is no detailed description of the influence tellurium small additions (up to 5 at %) on selenium structural relaxation during the transition to the glass state and crystalline that is a necessary factor for controlling electronic properties.…”

A non-isothermal crystallization study of Se85Te15chalcogenide glass using differential scanning calorimetry

“…Over the last few decades, chalcogenide glasses have drawn much attention because of their use in various solid-state devices, and have emerged as multipurpose materials [1][2][3][4]. They are appealing materials because of their technological applications and commercial importance.…”

“…The problem can be overcome by alloying Se with some impurities such as Ge, Te, In and Sn, which in turn gives high sensitivity, greater hardness, high crystallization temperature and small ageing effects as compared to pure Se glass [3]. Recently, it has been pointed out that Se-Te alloys have some advantages over amorphous Se as far as their use in xerography is concerned [4]. Owing to these advantages, Se-Te alloys can be used as recording layer materials in the optical phase change technique [5].…”