[en] ■ Selenium substitution stabilize the layered phase ■ Limit of insertion of selenium is below 75% in α Two synthesis pathways: two different polymorphs: ■ Thermodynamically stable α-phase via direct solid-state reaction in sealed quartz tube at 800°C of In 2 S 3 La 2 S 3 and La 2 O 3 ■ The layered via metathesis from LaOCl and NaInS 2 ■ LaOCl and NaInS 2 heated at 850°C yield Layered phase and transform to α at higher temperatures (ref. 2) Polymorphism of LaOInS 2
Disciplines :
Chemistry
Author, co-author :
Braun, Maxime ; Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM) ; UMR 8181, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UCCS-Unité de Catalyse et Chimie du Solide, Lille, France
Saitzek, Sébastien; UMR 8181, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UCCS-Unité de Catalyse et Chimie du Solide, Lille, France
Boivin, Edouard; UMR 8181, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UCCS-Unité de Catalyse et Chimie du Solide, Lille, France
Cario, Laurent; Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes, France
Roussel, Pascal; UMR 8181, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UCCS-Unité de Catalyse et Chimie du Solide, Lille, France
Kabbour, Houria; UMR 8181, Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UCCS-Unité de Catalyse et Chimie du Solide, Lille, France
Language :
English
Title :
Polymorphism in the oxysulfide system LaOInS 2 and its selenide derivatives: impact on the bandgap and photocurrent response
Original title :
[en] Polymorphism in the oxysulfide system LaOInS 2 and its selenide derivatives: impact on the bandgap and photocurrent response
