Research of Fluorescent Properties of a New Type of Phosphor with Mn2+-Doped Ca2SiO4

Abstract

Fluorescent optical fiber temperature sensors have attracted extensive attention due to their strong anti-electromagnetic interference ability, good high-voltage insulation performance, and fast response speed. The fluorescent material of the sensor probe directly determines the temperature measurement effect. In this paper, a new type of fluorescent material with a Mn2+-doped Ca2SiO4 phosphor (CSO:Mn2+) is synthesized via the solid-state reaction method at 1450 °C. The X-ray diffraction spectrum shows that the sintered sample has a pure phase structure, although the diffraction peaks show a slight shift when dopants are added. The temperature dependence of the fluorescence intensity and lifetime in the range from 290 to 450 K is explored with the help of a fluorescence spectrometer. Green emission bands peaking at 475 and 550 nm from Mn2+ are observed in the fluorescence spectra, and the intensity of emitted light decreases as the temperature rises. The average lifetime of CSO:Mn2+ is 17 ms, which is much higher than the commonly used fluorescent materials on the market. The fluorescence lifetime decreases with increasing temperature and shows a good linear relationship within a certain temperature range. The research results are of great significance to the development of a new generation of fluorescence sensors.

Recent Advances in Light-Conversion Phosphors for Plant Growth and Strategies for the Modulation of Photoluminescence Properties

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Design of a scalable microfiber optic temperature transmitter based on fluorescence lifetime

“…[19][20][21][22][23] Mn 4+ -fluoride-doped phosphors exhibit efficient narrowband luminescence shorter than 650 nm, boasting superior color purity and visual colorimetric parameters. 24,25 This paper introduces a scalable microtemperature monitoring system based on the fluorescence lifetime of K 2 SiF 6 :Mn 4+ phosphor fiber temperature sensors.…”

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Spatially Resolved Temperature Distribution in a Rare-Earth-Doped Transparent Glass-Ceramic

“…Over the past decade, numerous studies have been conducted using non-invasive 2D imaging of the temperature distribution on the micron and sub-micron levels [10][11][12][13]. The most promising non-invasive measurement techniques derive from the field of luminescence thermometry, which exploits temperature-dependent spectral changes of luminescent phosphors [14,15]. In the context of this, Brites et al [16] give a comprehensive review of the developments in luminescence thermometry, with a special emphasis on lanthanide-based thermometers and their implementation.…”