Optical and Gas Sensing Properties of Pr Doped TiO۲ Thin Films

سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 115

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شناسه ملی سند علمی:

JR_IJMSEI-20-2_003

تاریخ نمایه سازی: 28 خرداد 1402

چکیده مقاله:

In this research, praseodymium (Pr) doped titanium oxide was deposited onto a glass substrate by nebulizer spray pyrolysis technique. The rare earth-doped thin film was subjected to studies on structural, morphological, optical, and gas sensing properties. The structural properties of the deposited thin films exhibit varied texture along with (۱۰۱) direction. The grain size of the thin film varies with various mole percentages of doped TiO۲ thin films. As various doping concentrations increase, the prepared thin films show different optical properties like band gap, extension coefficient, refractive index, and dielectric constant. Fourier transform infrared (FTIR) results revealed that the reflectance spectra conformed to the existence of functional groups and chemical bonding. Gas sensing studies were carried out for undoped and Pr-doped TiO۲ films. The sensor was exposed to ethanol gas. The response of a TiO۲ thin film at different ethanol concentrations and different operation temperatures was studied. The gas sensitivity of ethanol gas was measured when the fast response of the film with ۰.۰۰۴M Pr-doped TiO۲ thin film showed a response time of ۹۹ s and recovery time of ۴۱ s, as well as the resistance falling to ۰.۶x۱۰۶Ω. The sensor operated at maximum effectiveness at an optimum temperature of ۲۰۰°C.

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نویسندگان

Revathi B

PG and Research Department of Physics, Alagappa Government Arts College, Karaikudi-۶۳۰ ۰۰۳, India

Perumal P

PG and Research Department of Physics, Alagappa Government Arts College, Karaikudi-۶۳۰ ۰۰۳, India

Deivamani D

Assitant professor, Alagappa government Arts collegeKaraikudi-۶۳۰۰۰۳

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