期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 9, 期 13, 页码 4643-4651出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc00709b
关键词
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资金
- Polish National Science Centre [2016/23/D/ST4/00296, 2018/31/N/ST5/00636]
- Ministerio de Economia y Competitividad (MINECO) under the Spanish National Program of Materials [PID2019-106383GB-C44, PID2019-107335RA-I00]
- Gobierno de Canarias [ProID2020010067]
- EU-FEDER funds
- European Union through the European Social Fund under the Operational Program Knowledge Education Development [POWR.03.02.00-00-I023/17]
- Bekker Programme scholarship - Polish National Agency for Academic Exchange
This work develops a luminescent pressure sensor that can work over a wide pressure range by combining different pressure sensing concepts, enabling monitoring of both low and high pressures.
Pressure is a fundamental physical parameter, so its monitoring is crucial for various industrial and scientific purposes. However, the available optical sensors allow monitoring in either low pressure or high pressure ranges. In this work, different concepts of pressure sensing are combined, and the first luminescent pressure sensor working within 9-orders of magnitude (from 10(-4) to 10(5) bar) is developed, allowing both low (vacuum) and high pressure sensing. This sensor is based on the inorganic, upconverting material (YPO4:Yb3+-Er3+) emitting in the visible and near-infrared (NIR) ranges. For vacuum detection, the recently discovered sensing method is applied, which is based on the conversion of a luminescent thermometer into the pressure sensor. This is because of the effect of light-to-heat conversion, which is greatly enhanced under vacuum conditions, and manifested as a change in the intensity ratio of Er3+ thermally-coupled bands (525/550 nm). Whereas for high-pressure sensing, the emission line shift of Er3+ (induced by materials compression), located in the NIR spectral range, is used.
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