Electrodeposition of Silver Vanadate Films: A Tale of Two Polymorphs.

Two polymorphs of AgVO , namely the α- and β- forms, were prepared and their physical, structural, optical, electrochemical, and photoelectrochemical characteristics were compared using a battery of experimental and theoretical tools. A two-step method, previously developed in the our laboratory for the electrodeposition of inorganic semiconductor films, was applied to the electrosynthesis of silver vanadate (AgVO ) films on transparent, conducting oxide surfaces. In the first step, silver was cathodically deposited from a non-aqueous bath containing silver nitrate.

Role of f Electrons in the Optical and Photoelectrochemical Behavior of Ca(LaCe )S (0 ≤ x ≤ 1).

This study focuses on a solid solution series, Ca(LaCe )S (0 ≤ x ≤ 1), where the f electron density is absent in CaLaS and is progressively increased until it is maximized in CaCeS. Correspondingly, these samples, synthesized by a sealed ampule method, showed progressive variations in color ranging from gray for CaLaS to orange-red for CaCeS. The crystal structural nuances of both the end members and three solid solutions with x = 0.