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Issue 15, 2012
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Stable anatase TiO2 coating on quartz fibers by atomic layer deposition for photoactive light-scattering in dye-sensitized solar cells

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Abstract

Quartz fibers provide a unique high surface-area substrate suitable for conformal coating using atomic layer deposition (ALD), and are compatible with high temperature annealing. This paper shows that the quartz fiber composition stabilizes ALD TiO2 in the anatase phase through TiO2–SiO2 interface formation, even after annealing at 1050 °C. When integrated into a dye-sensitized solar cell, the TiO2-coated quartz fiber mat improves light scattering performance. Results also confirm that annealing at high temperature is necessary for better photoactivity of ALD TiO2, which highlights the significance of quartz fibers as a substrate. The ALD TiO2 coating on quartz fibers also boosts dye adsorption and photocurrent response, pushing the overall efficiency of the dye-cells from 6.5 to 7.4%. The mechanisms for improved cell performance are confirmed using wavelength-dependent incident photon to current efficiency and diffuse light scattering results. The combination of ALD and thermal processing on quartz fibers may enable other device structures for energy conversion and catalytic reaction applications.

Graphical abstract: Stable anatase TiO2 coating on quartz fibers by atomic layer deposition for photoactive light-scattering in dye-sensitized solar cells

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Publication details

The article was received on 18 Apr 2012, accepted on 01 Jun 2012 and first published on 06 Jun 2012


Article type: Paper
DOI: 10.1039/C2NR30939D
Citation: Nanoscale, 2012,4, 4731-4738
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    Stable anatase TiO2 coating on quartz fibers by atomic layer deposition for photoactive light-scattering in dye-sensitized solar cells

    D. H. Kim, H. Koo, J. S. Jur, M. Woodroof, B. Kalanyan, K. Lee, C. K. Devine and G. N. Parsons, Nanoscale, 2012, 4, 4731
    DOI: 10.1039/C2NR30939D

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