Eu3+-based luminescence ratiometric thermometry. Issue 16 (4th March 2020)

• Record Type: Journal Article
• Authors: Li, Leipeng; Zhou, Yuan; Qin, Feng; Miao, Jipeng; Zheng, Yangdong; Zhang, Zhiguo
• Is Part Of: RSC advances. Volume 10:Issue 16(2020)
• Page Start: 9444
• Page End: 9449
• Publication Date: 2020-03-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra00170h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We show that more sensitive luminescence ratiometric thermometry can be achieved using a hypersensitive Eu 3+ transition. Abstract : Recently, luminescence ratiometric thermometry has gained ever-increasing attention due to its merits of rapid response, non-invasiveness, high spatial resolution, and so forth. For research fields relying on temperature measurements, achieving a higher relative sensitivity of this measurement is still an important task. In this work, we developed a strategy for achieving a more sensitive temperature measurement, one merely depending on the photoluminescence of Eu 3+ . We showed that using the 5 D1 – 7 F1 transition and the hypersensitive 5 D0 – 7 F2 transition of Eu 3+ can boost the relative sensitivity compared with the method relying on the 5 D1 – 7 F1 and 5 D0 – 7 F1 transitions of Eu 3+ . The difference between these two strategies was studied and was explained by the hypersensitive 5 D0 – 7 F2 transition more steeply decreasing than the 5 D0 – 7 F1 transition with a rise in temperature. Our work is expected to help researchers design sensitive optical thermometers via proper use of this hypersensitive transition.