Tm2+ Activated SrB4O7 Bifunctional Sensor of Temperature and Pressure—Highly Sensitive, Multi‐Parameter Luminescence Thermometry and Manometry. Issue 22 (22nd September 2021)

• Record Type: Journal Article
• Authors: Zheng, Teng; Sójka, Małgorzata; Runowski, Marcin; Woźny, Przemysław; Lis, Stefan; Zych, Eugeniusz
• Is Part Of: Advanced optical materials. Volume 9:Issue 22(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-09-22
• Subjects: luminescence thermometry -- multifunctional sensors -- multimodal luminescent thermometer -- optical manometry -- Tm 2+ emission; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202101507
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Noninvasive sensing of temperature and pressure offers new and exciting opportunities to investigate and monitor the variation of physicochemical and spectroscopic properties of materials under extreme conditions. In this work, Tm 2+ ‐doped SrB4 O7 phosphor material—a novel, contactless bifunctional, and multimodal optical sensor for pressure and temperature is reported. A series of SrB4 O7 : x Tm 2+ samples are synthesized via a high‐temperature solid‐state method in air. The impact of high pressure (up to ≈13 GPa) and temperature (from 10 to 400 K) on spectroscopic properties of SrB4 O7 :Tm 2+ is investigated. The emission band of Tm 2+ demonstrates a significant spectral shift and a band broadening as a function of both pressure and temperature. Such a result is a consequence of a significant change of vibronic components of the Tm 2+ 4f 12 5d ↔ 4f 13 zero‐phonon line. The emission bandwidth and its spectral position exhibit excellent sensitivities to pressure, that is, ≈23.17 and ≈−11.85 cm −1 GPa −1, respectively. Furthermore, for the first time, it is shown that temperature sensing can be realized via four different pathways in a single material: i) bandwidth, ii) band shift, iii) band intensity ratio, and iv) luminescence lifetime, with maximal sensitivities of ≈3.85 cm −1 K −1, 1.44 cm −1 K −1, 1.48% K −1 and 4.16% K −1, respectively. Abstract : Tm 2+ ‐doped SrB4 O7 material is demonstrated as a novel, highly sensitive, bifunctional, and multimodal (multiparameter) sensor for optical thermometry and manometry. Using a single material, SrB4 O7 :Tm 2+ can realize temperature sensing in four various pathways and two pressure sensing models with high sensitivity. Such a multi‐parameter optical sensor can ensure high sensitivity in a wide range of temperature and pressure.