The Formation of Self-Trapped Holes in Mixed Crystals AgBr_1−xCl_x

Abstract

Irradiation of mixed crystals AgBr_1−xCl_x (x=0.999, 0.99, 0.98) with blue light at 4.2 K produces the complexes (AgCl₆)⁴⁻ and (AgBrCl₅)⁴⁻. The observed intensities of (AgCl₆)⁴⁻ and (AgBrCl₅)⁴⁻ ESR spectra for these crystals show that, even at 4.2 K, holes produced by irradiation move to near Ag sites having Br ions as ligands, forming (AgBrCl₅)⁴⁻.