P2EM.12 - Inorganic Phosphors for Temperature Sensing in Hydrogen-Rich Environment
- Event
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria - Chapter
- P-2 - Emerging Sensor Technologies
- Author(s)
- B. Shu Ip, Y. Mozharivskyj - Dept. of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario (Canada), Y. Syvenkyy - Photon Control Inc , Richmond, BC (Canada)
- Pages
- 769 - 770
- DOI
- 10.5162/IMCS2018/P2EM.12
- ISBN
- 978-3-9816876-9-9
- Price
- free
Abstract
Inorganic phosphor materials can be used for temperature measurements since the lifetime of phosphorescence is temperature dependent. For practical applications, the lifetime in the range of milliseconds to microseconds is required and this condition limits the choice of activators to Cr3+ and Mn4+ among the 3d metals. The working environment and instrumental features puts additional constraints on the chemical and temperature stability, absorption and emission profiles of phosphors. This paper discusses development of phosphor materials for operation in the hydrogen-rich environments, such as Canadian oil fields. Presence of hydrocarbons leads to saturation of optic fibers with hydrogen and attenuation of light above 705 nm, the emission wavelength of the Cr3+ - doped Y3Al5O12 temperature phosphor. Using chemical tools, a phosphor with longer emission wavelength was developed. This phosphor also meets the other requirements imposed by the current instrumentation.