Characterization of a composite film prepared by deposition of TiO 2 on porous Si

Kang Jin Kim, Gyu Sang Kim, Jin Sup Hong, Tae Sik Kang, Donghwan Kim

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Abstract

TiO 2 thin films were prepared on electrochemically etched porous Si by anodic oxidative hydrolysis of TiCl 3 for the purpose of solar cell application. We compared electrochemical and photoelectrochemical properties of the TiO 2-deposited porous Si electrodes (TiO 2/porous Si) with those of a porous Si electrode. The TiO 2/porous Si showed prolonged stability of photoluminescence and enhancements of photovoltage and photocurrent by 0.13 V and 67% increase, respectively, in comparison with porous Si due to the reduction of surface traps for charge carriers in the presence of TiO 2 thin layer. Li + and Na + ions exhibited intercalation and deintercalation through the electrodeposited TiO 2 film.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalSolar Energy
Volume64
Issue number1-3
DOIs
Publication statusPublished - 1998 Sep 1

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ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

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