Investigating the light stability of solid-solution-based AgCl-A... ... . Solid solutions of silver and monadic thallium halides prove to be the most suitable crystalline media for these needs. We study the light stability variation of high-purity AgCl1?xBrx (0≤x≤1) and Ag1?xTlxBr1?xIx (0≤x≤0.05) crystals by measuring the ...