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Influence of the anatase/rutile phase ratio on the photoresponse of TiO2 thin films.

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Title: Influence of the anatase/rutile phase ratio on the photoresponse of TiO2 thin films.
Authors: Perillo, P. M.1 (AUTHOR) pato.dulce@gmail.com, Rodriguez, D. F.1 (AUTHOR)
Source: Journal of Solid State Electrochemistry. Mar2026, Vol. 30 Issue 3, p1233-1241. 9p.
Subjects: Titanium dioxide films, Photosensitivity, Anodic oxidation of metals, Titanium dioxide, Optical properties
Abstract: In this work, TiO₂ thin films were fabricated on a gold-interdigitated silicon substrate by electrochemical anodization. The samples were annealed in air for 6 h at 450 °C and 550 °C, obtaining the coexistence of the anatase and rutile phases. The influence of the anatase/rutile phases ratio on the photoresponse at different wavelengths was analyzed. The optical and electrical properties, as well as the morphology of the TiO₂ thin film, were studied by scanning electron microscopy, X-ray diffraction, impedance spectroscopy, and UV–vis spectroscopy. Unlike most TiO₂ films, which exhibit good photoresponse only in UV light, we were able to extend the photoresponse to a wide range of wavelengths. Controlling the ratio of the anatase/rutile phases by annealing temperature significantly improved the sensitivity of the thin film. It was observed that the sample with approximately 80% anatase phase by weight exhibited a better photoresponse than the sample with a reduced anatase value of 25%. In particular, sensitivity increased by an order of magnitude. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Solid State Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 191694235
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: Influence of the anatase/rutile phase ratio on the photoresponse of TiO<subscript>2</subscript> thin films.
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  Data: <searchLink fieldCode="AR" term="%22Perillo%2C+P%2E+M%2E%22">Perillo, P. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pato.dulce@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Rodriguez%2C+D%2E+F%2E%22">Rodriguez, D. F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Solid+State+Electrochemistry%22">Journal of Solid State Electrochemistry</searchLink>. Mar2026, Vol. 30 Issue 3, p1233-1241. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Titanium+dioxide+films%22">Titanium dioxide films</searchLink><br /><searchLink fieldCode="DE" term="%22Photosensitivity%22">Photosensitivity</searchLink><br /><searchLink fieldCode="DE" term="%22Anodic+oxidation+of+metals%22">Anodic oxidation of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+properties%22">Optical properties</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: In this work, TiO₂ thin films were fabricated on a gold-interdigitated silicon substrate by electrochemical anodization. The samples were annealed in air for 6 h at 450 °C and 550 °C, obtaining the coexistence of the anatase and rutile phases. The influence of the anatase/rutile phases ratio on the photoresponse at different wavelengths was analyzed. The optical and electrical properties, as well as the morphology of the TiO₂ thin film, were studied by scanning electron microscopy, X-ray diffraction, impedance spectroscopy, and UV–vis spectroscopy. Unlike most TiO₂ films, which exhibit good photoresponse only in UV light, we were able to extend the photoresponse to a wide range of wavelengths. Controlling the ratio of the anatase/rutile phases by annealing temperature significantly improved the sensitivity of the thin film. It was observed that the sample with approximately 80% anatase phase by weight exhibited a better photoresponse than the sample with a reduced anatase value of 25%. In particular, sensitivity increased by an order of magnitude. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Solid State Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10008-025-06466-z
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 1233
    Subjects:
      – SubjectFull: Titanium dioxide films
        Type: general
      – SubjectFull: Photosensitivity
        Type: general
      – SubjectFull: Anodic oxidation of metals
        Type: general
      – SubjectFull: Titanium dioxide
        Type: general
      – SubjectFull: Optical properties
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              M: 03
              Text: Mar2026
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              Y: 2026
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