Specific features of the optical properties of potassium–aluminum borate glasses with copper chloride nanocrystals at high temperatures

Abstract

It is shown that heating of potassium–aluminum borate glasses with CuCl nanocrystals above 80°C leads to the disappearance of exciton absorption peaks, whereas cooling below 50°C gives rise to these peaks. These effects are related, respectively, to the melting of nanocrystals and crystallization of nanophase.