Low temperature photo- and mechanoluminescence of composite material based on photopolymerizing resin and fine-dispersed powder of SrAl <sub>2</sub>O <sub>4</sub>:(Eu <sup>2+</sup>,Dy <sup>3+</sup>) phosphor
The changes of photo- and mechanoluminescence of the composite material based on the photopolimerizing phosphor resin and fine-dispersed phosphor powder SrAl <sub>2</sub>O <sub>4</sub>:(Eu <sup>2+</sup>,Dy <sup>3+</sup>) under temperature lowering from room to liquid-nitrogen temperature have been investigated. It is shown that the phosphorescence intensity of the specimen is decreased when the temperature reduction takes place, whereas the intensity of mechanoluminescence does not depend on the temperature.