An optical temperature sensor based on infrared-to-visible upconversion emission in Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbØ9(BTN)ceramics is reported.The fluorescence intensity ratio of the green upconversion photolum...An optical temperature sensor based on infrared-to-visible upconversion emission in Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbØ9(BTN)ceramics is reported.The fluorescence intensity ratio of the green upconversion photoluminescence(UC−PL)around 524 nm and 545 nm depends on temperature.The operating temperature range and the maximum sensitivity of Er ^(3+)/Yb ^(3+)co−doped Bi_(3)TiNbO_(9) ceramics are 123–693 K and 0.0032 K^(−1),respectively.BTN:Er3+/Yb3+ceramic has good thermal,physical and chemical stability,great UC−PL intensity and low cost fabrication.The results imply that Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbO9 ceramic is promising for applications in wide-temperature-range sensors.展开更多
基金by the National Natural Science Foundation of China under Grant No 10704021the Natural Scientific Research Innovation Foundation at the Harbin Institute of Technology(2009055).
文摘An optical temperature sensor based on infrared-to-visible upconversion emission in Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbØ9(BTN)ceramics is reported.The fluorescence intensity ratio of the green upconversion photoluminescence(UC−PL)around 524 nm and 545 nm depends on temperature.The operating temperature range and the maximum sensitivity of Er ^(3+)/Yb ^(3+)co−doped Bi_(3)TiNbO_(9) ceramics are 123–693 K and 0.0032 K^(−1),respectively.BTN:Er3+/Yb3+ceramic has good thermal,physical and chemical stability,great UC−PL intensity and low cost fabrication.The results imply that Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbO9 ceramic is promising for applications in wide-temperature-range sensors.
