TY - JOUR
T1 - Optical thermometry through green upconversion emissions in Er 3+/Yb 3+-codoped CaWO 4 phosphor
AU - Xu, Wei
AU - Gao, Xiaoyang
AU - Zheng, Longjiang
AU - Wang, Peng
AU - Zhang, Zhiguo
AU - Cao, Wenwu
PY - 2012/7
Y1 - 2012/7
N2 - Under 980nm excitation, the temperature-dependent green upconversion emissions from Er 3+/Yb 3+-codoped CaWO 4 phosphor were studied at temperatures from 294 to 923 K. By using the fluorescence intensity ratio technique, the maximum sensitivity for temperature measurement achieved here is approximately 0.0092 K -1, which is much higher than previously reported temperature sensors based on the fluorescence of Er 3+ions in other host materials. With the efficient upconversion fluorescence, the Er 3+/Yb 3+-codoped CaWO 4 is a very promising candidate for optical high-temperature sensors with high sensitivity and good accuracy.
AB - Under 980nm excitation, the temperature-dependent green upconversion emissions from Er 3+/Yb 3+-codoped CaWO 4 phosphor were studied at temperatures from 294 to 923 K. By using the fluorescence intensity ratio technique, the maximum sensitivity for temperature measurement achieved here is approximately 0.0092 K -1, which is much higher than previously reported temperature sensors based on the fluorescence of Er 3+ions in other host materials. With the efficient upconversion fluorescence, the Er 3+/Yb 3+-codoped CaWO 4 is a very promising candidate for optical high-temperature sensors with high sensitivity and good accuracy.
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U2 - 10.1143/APEX.5.072201
DO - 10.1143/APEX.5.072201
M3 - Article
AN - SCOPUS:84863746907
SN - 1882-0778
VL - 5
JO - Applied Physics Express
JF - Applied Physics Express
IS - 7
M1 - 072201
ER -