Preparation of Crystallized Sr 1−X Ca X MoO ₄ Solid‐Solution Films by an Electrochemical Method at Room Temperature and Their Luminescence

A complete series of well‐crystallized solid‐solution Sr 1– X ‐Ca X MoO 4 films has been prepared on molybdenum substrates in an electrolytic solution containing Sr 2+ and Ca 2+ ions by an electrochemical method at room temperature (25°C). The peak positions of excitation and emission of the Sr 1–X Ca X MoO 4 solid‐solution films were independent of the Ca content: 285 ± 2 nm for excitation and 536 ± 2 nm for emission at liquid‐nitrogen temperature (−196°C).