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CVD-grown TiO2 part...
CVD-grown TiO2 particles as light scattering structures in dye-sensitized solar cells
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- Pazoki, Meysam (författare)
- Uppsala universitet,Fysikalisk kemi
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Taghavinia, N. (författare)
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Abdi, Y. (författare)
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Tajabadi, F. (författare)
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- Boschloo, Gerrit (författare)
- Uppsala universitet,Fysikalisk kemi
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- Hagfeldt, Anders (författare)
- Uppsala universitet,Fysikalisk kemi
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2012
- 2012
- Engelska.
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Ingår i: RSC Advances. - : Royal Society of Chemistry (RSC). - 2046-2069. ; 2:32, s. 12278-12285
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Chemical vapour deposition (CVD) at atmospheric pressure, using TiCl 4 as a precursor, was used to grow nanostructured TiO2 films on glass substrates. At relatively low temperatures (∼245 °C) and using relatively high reactant concentrations, different nano-morphologies of TiO2 were formed simultaneously, such as spheres, nanowires and mesoporous structures. The TiO2 spheres were successfully applied as light-scattering particles in dye-sensitized solar cells, either by direct deposition onto electrodes in the reactor, or by preparation of a printing paste from the deposited particles. For dye-sensitized solar cells using the organic dye D35 as sensitizer and a cobalt-complex based redox electrolyte, a solar cell efficiency of 4.4% was obtained using a 5 μm transparent mesoporous TiO 2 layer. Addition of a 5 μm light-scattering CVD-particle film increased the efficiency by 22% to 5.4%, which was similar to the result obtained with an equally thick commercially available light-scattering film (5.3%). Longer electron lifetime was found using CVD-based films, which is attributed to the presence of more traps in the bulk of the material.
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