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Energetic surface heterogeneity of nanocrystalline TiO2 films for dye-sensitized solar cells

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  • Separation Technology, Thermodynamics
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Abstract

Dye sensitized solar cells (DSSCs) have been receiving significant attention because they have many advantages compared to conventional organic solar cells. It has been known that the photovoltaic characteristics of DSSC are highly dependent on the adsorption properties of dyes on TiO2 films. To analyze the surface heterogeneity of TiO2 surfaces, single-phase anatase nanocrystallite titanium films were prepared by sol-gel method using the hydrolysis reaction of titanium tetraisopropoxide under acidic condition and characterized by XRD, FE-SEM and BET analysis. The adsorption energy distribution functions were calculated by the generalized nonlinear regularization method. It was found that the shape and the intensity of the adsorption energy distribution curve determined were highly related with the physical properties (i.e., geometrical heterogeneity) and chemical characteristics (i.e., energetic heterogeneity) of nanocrystalline TiO2 for DSSC.

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Authors and Affiliations

  1. Department of Chemical and Biochemical Engineering, Chosun University, Gwangju, 501-759, Korea

    Jae-Wook Lee & Kyu-Hyuk Kwun

  2. Department of Environmental and Chemical Engineering, Seonam University, Namwon, 590-170, Korea

    Kyung-June Hwang

  3. Faculty of Applied Chemical Engineering, Chonnam National University, Gwangju, 500-757, Korea

    Wang-Geun Shim

  4. Department of Electric Engineering, Chonnam National University, Gwangju, 500-757, Korea

    Kyung-Hee Park & Hal-Bon Gu

Authors
  1. Jae-Wook Lee
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  2. Kyung-June Hwang
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  3. Wang-Geun Shim
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  4. Kyung-Hee Park
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  5. Hal-Bon Gu
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  6. Kyu-Hyuk Kwun
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Correspondence to Kyu-Hyuk Kwun.

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Lee, JW., Hwang, KJ., Shim, WG. et al. Energetic surface heterogeneity of nanocrystalline TiO2 films for dye-sensitized solar cells. Korean J. Chem. Eng. 24, 847–850 (2007). https://doi.org/10.1007/s11814-007-0052-4

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  • DOI: https://doi.org/10.1007/s11814-007-0052-4

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