(Invited) Synthesis, Kinetics, Characterization and Application of Sodium and Potassium (poly)Selenides for Chalcogenide Semiconductor Doping. (25th April 2017)

• Record Type: Journal Article
• Authors: Colombara, Diego; Gonçalves, Anne-Marie; Aureau, Damien; Etcheberry, Arnaud
• Is Part Of: ECS transactions. Volume 77:Number 4(2017)
• Page Start: 63
• Page End: 66
• Publication Date: 2017-04-25
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07704.0063ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : In this work we follow electrochemically the synthesis of K2 Se in liquid ammonia at -55 °C. Elemental potassium is dissolved in liquid ammonia, giving K + ions and the typically dark blue solvated electrons. A stoichiometric amount of elemental selenium is added to the solution, which causes a decrease with time of the solvated electron concentration due to Se 2- formation. The decrease of solvated electron concentration is measured very accurately by means of cyclic voltammetry at the surface of a Pt microelectrode.