articleScientific ReportsAug 30, 2016GOLD OA

Formation of oxygen vacancies and Ti3+ state in TiO2 thin film and enhanced optical properties by air plasma treatment

BBBandna BhartiSKSantosh KumarHLHeung-No LeeRKRajesh Kumar

Jaypee University of Information Technology · Gwangju Institute of Science and Technology

PubMed
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Abstract

This is the first time we report that simply air plasma treatment can also enhances the optical absorbance and absorption region of titanium oxide (TiO2) films, while keeping them transparent. TiO2 thin films having moderate doping of Fe and Co exhibit significant enhancement in the aforementioned optical properties upon air plasma treatment. The moderate doping could facilitate the formation of charge trap centers or avoid the formation of charge recombination centers. Variation in surface species viz. Ti(3+), Ti(4+), O(2-), oxygen vacancies, OH group and optical properties was studied using X-ray photon spectroscopy (XPS) and UV-Vis spectroscopy. The air plasma treatment caused enhanced optical absorbance…

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Topics & keywords

Topics
Keywords
  • Absorbance
  • X-ray photoelectron spectroscopy
  • Materials science
  • Oxygen
  • Doping
  • Analytical Chemistry (journal)
  • Thin film
  • Absorption (acoustics)
UN Sustainable Development Goals
  • Clean water and sanitation
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