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- Title
Structural, Morphological, and Optical Properties of Ag‐Doped TiO<sub>2</sub> Thin‐Film over Fiber Optic Substrate for Sensing Applications.
- Authors
Singh, Shailendra Kr.; Samanta, Uttam Kr.; Dhar, Anirban; Chandra Paul, Mukul
- Abstract
Ag‐doped TiO2 (rAg/Ti, r1−3 = 2, 4, 6 wt%) is synthesized by a hydrothermal technique. Different characterizations, that is, X‐ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) analysis, photoluminescence (PL) spectra analysis, X‐ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM), energy dispersive X‐ray analysis (EDX), and Brunauer–Emmett–Teller (BET) analysis, are conducted to study the utility of the developed thin‐film material as a sensing medium over the fiber substrate. The as‐prepared material is hydrothermally deposited over the optical fiber to construct a fiber optic sensing probe. The optical properties of TiO2 are simulated theoretically by MATLAB simulation that reveals that optical absorption appears at the wavelength of 763 nm. The initial performance of the rAg/Ti‐based optical fiber is investigated with the amine group in the range of 500−1500 ppm and a satisfactory response is found toward ethylenediamine (EDA) analytes with average sensitivity (Sav, in %) as 41.81 at 1200 ppm.
- Subjects
OPTICAL properties; ENERGY dispersive X-ray spectroscopy; FIELD emission electron microscopes; LIGHT absorption; FOURIER transform infrared spectroscopy
- Publication
Physica Status Solidi. A: Applications & Materials Science, 2021, Vol 218, Issue 22, p1
- ISSN
1862-6300
- Publication type
Article
- DOI
10.1002/pssa.202100447