Sr1.7Zn0.3CeO4F0.2:Eu3+: novel dual-emission temperature sensors for remote, noncontact thermometric application. Issue 16 (1st February 2017)

• Record Type: Journal Article
• Authors: Li, Haifeng; Pang, Ran; Sun, Wenzhi; Li, Huimin; Ma, Tengfei; Jia, Yonglei; Li, Da; Jiang, Lihong; Zhang, Su; Li, Chengyu
• Is Part Of: RSC advances. Volume 7:Issue 16(2017)
• Page Start: 9645
• Page End: 9652
• Publication Date: 2017-02-01
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra25092k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A novel dual-emitting temperature sensor Sr1.7 Zn0.3 CeO4 F0.2 :Eu 3+ was synthesized. The intensity ratio shows superior linearity as a function of the temperature, indicating the potential application in the thermometry field. Abstract : A novel dual-emitting temperature sensor, Sr1.7 Zn0.3 CeO4 F0.2 :Eu 3+, is successfully synthesized via a ceramic reaction. Powder X-ray diffraction patterns and Rietveld refinement verify the phase purity of the sensor. Its photoluminescence spectrum exhibits a pronounced intrinsic dual emission, theoretically divided by the wavelength of 570 nm: one stems from Eu 3+ and the other is derived from the Ce 4+ –O 2− charge transfer state. The temperature-dependent luminescence spectra of the dual-emission thermophosphor demonstrate its superior sensitivity towards ambient temperature. Further studies illustrate that the intensity ratio between the aforementioned two parts, as a function of temperature, is perfectly linear over a broad temperature window, yielding a convenient and accurate approach to obtain the temperature of a target, measured using the noncontact self-referencing model. We also investigate the basis of the underlying mechanism of Sr1.7 Zn0.3 CeO4 F0.2 :Eu 3+ as a dual-emission thermometric sensor. The research herein shows that the intrinsic dual-emission sensor, as a new-fashioned thermophosphor, displays potential for ratiometric intensity measurements in thermometry domains.