CRYSTAL CONTAINING COPPER HALIDE, AND METAL HALIDE AND/OR AMMONIUM HALIDE, CRYSTALLINE THIN-FILM, PRECURSOR SOLUTION THEREOF, AND METHOD FOR PRODUCING CRYSTALLINE THIN-FILM

摘要

The present invention provides a crystal which exhibits favorable conductivity, can be produced at a processing temperature which is lower than that of the prior art, and contains a copper halide and also contains a halide of a metal selected from the group consisting of alkali metals, magnesium and zinc and/or an ammonium halide. The present invention also provides a transparent crystalline thin-film, a precursor solution thereof, and a method for producing a crystalline thin-film. This crystalline thin-film contains a copper halide and also contains a halide of a metal selected from the group consisting of alkali metals, magnesium and zinc and/or an ammonium halide. The mole ratio of the copper halide to the metal halide and/or ammonium halide is in the range of 100:1 to 100:30.