Faculty of Materials Science and Engineering;
Kunming University of Science and Technology;
Kunming 650093;
China;
School of Physics and Opto-Electronic Technology;
Baoji University of Arts and Sciences;
Baoji 721016;
China;
Key Laboratory of Advanced Materials of Yunnan Province;
Kunming 650093;
China;
CsPbI_(3)quantum dots; Thermometry; Thermal stability; Visual change; Rare earths;