Investigation of the saturated vapor pressure of selenium and indium sesquiselenide In0.4Se0.6

Abstract

The temperature dependences of the saturated vapor pressure of selenium (700-1100 K) and indium sesquiselenide In 0.4 Se 0.6 (1123-1373 K) are investigated using the gravimetric method. The saturated vapor pressures obtained in this study for selenium and the In 0.4 Se 0.6 compound are in satisfactory agreement with the data available in the literature. The enthalpy of vaporization of In 0.4 Se 0.6 is estimated.

Investigation of the saturated vapor pressure of the Cu2Se and CuInSe2 compounds

“…The enthalpy and entropy of vaporization calculated for the CuInSe 2 compound from the temperature dependence of the saturated vapor pressure [relationship (2)] in the temperature range 1273-1423 K are as follows: ∆H vapor = 230 ± 9 kJ/mol and ∆S vapor = 157 ± 6.5 J/K. CONCLUSIONS Thus, we determined the saturated vapor pressures of the Cu 2 Se and CuInSe 2 compounds.…”

“…The saturated vapor pressure was measured on a graded-up setup described in our previous paper [2]. The essence of the method used consists in finding the weight m of the vapor occupying a reservoir of volume V at a specified temperature T .…”

“…Our investigations are aimed at elucidating the nature of the vaporization of the compounds whose compositions lie along the In 2 Se 3 -Cu 2 Se pseudobinary join of the Cu-In-Se ternary system, which involves the CuInSe 2 compound. In this work, we studied the second compound of this join, namely, Cu 2 Se (the In 2 Se 3 compound was studied in our previous work [2]). Moreover, it is important to understand the nature of the vaporization of the CuInSe 2 compound.…”

Computational and experimental investigation for new transition metal selenides and sulfides: The importance of experimental verification for stability

“…The vapor pressures of sulfur and selenium put an upper limit to temperatures that can be reached in a solid state reaction, typically around 700 • C in our work. [27][28][29] CS 2 has been known to be a powerful sulfidizing agent for oxides, which allows gas flow reactions to be carried out at higher temperatures. 30-32 Initial stoichiometric powders were kept in an alumina crucible and then loaded in a quartz reaction tube.…”