Morphological control of platinum nanostructures for highly efficient dye-sensitized solar cells

Lu Lin Li, Chia Wei Chang, Hsin Hui Wu, Jia Wei Shiu, Po Ting Wu, Eric Wei-Guang Diau

研究成果: 雜誌貢獻文章

48 引文 (Scopus)

摘要

Cyclic electro-deposition (CED) is a cost-effective tool to synthesize nanostructures with a solution process, controllable morphology and high purity. Here we report novel platinum nanostructures fabricated according to CED at room temperature in solution containing H2PtCl6 precursor and NaNO3. Remarkable Pt nanostructures - from nanoclusters, nanosheets, nanograsses to nanoflowers - were produced through morphological control via variation of either period of CED scans or concentration of the precursor. Pt films with uniform nanograss structures have great electro-catalytic performance (electron-transfer resistance = 0.3 Ω) and intrinsic light-scattering (reflectivity ∼50%), perfectly suitable for use as counter-electrodes for dye-sensitized solar cells (DSSCs). The DSSC device made with the Pt-nanograss counter-electrode and N719 dye attained efficiency η = 9.61% of power conversion, which is 12% enhanced from that fabricated according to a conventional thermal decomposition method (η = 8.55%) under similar experimental conditions. When the devices were further optimized with a thick TiO2 film (17 + 5 μm) sensitized by Z907 dye using the CED-Pt counter-electrode, we obtained JSC (mA cm-2) = 19.44, VOC (V) = 0.742, and FF = 0.736, giving an exceptional power conversion efficiency of 10.62%.
原文英語
頁(從 - 到)6267-6273
頁數7
期刊Journal of Materials Chemistry
22
發行號13
DOIs
出版狀態已發佈 - 四月 7 2012
對外發佈Yes

指紋

Platinum
Electrodeposition
Nanostructures
Electrodes
Coloring Agents
Dyes
Nanoflowers
Nanosheets
Nanoclusters
Volatile organic compounds
Thick films
Light scattering
Conversion efficiency
Pyrolysis
Dye-sensitized solar cells
Electrons
Costs
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

引用此文

Morphological control of platinum nanostructures for highly efficient dye-sensitized solar cells. / Li, Lu Lin; Chang, Chia Wei; Wu, Hsin Hui; Shiu, Jia Wei; Wu, Po Ting; Wei-Guang Diau, Eric.

於: Journal of Materials Chemistry, 卷 22, 編號 13, 07.04.2012, p. 6267-6273.

研究成果: 雜誌貢獻文章

Li, Lu Lin ; Chang, Chia Wei ; Wu, Hsin Hui ; Shiu, Jia Wei ; Wu, Po Ting ; Wei-Guang Diau, Eric. / Morphological control of platinum nanostructures for highly efficient dye-sensitized solar cells. 於: Journal of Materials Chemistry. 2012 ; 卷 22, 編號 13. 頁 6267-6273.
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abstract = "Cyclic electro-deposition (CED) is a cost-effective tool to synthesize nanostructures with a solution process, controllable morphology and high purity. Here we report novel platinum nanostructures fabricated according to CED at room temperature in solution containing H2PtCl6 precursor and NaNO3. Remarkable Pt nanostructures - from nanoclusters, nanosheets, nanograsses to nanoflowers - were produced through morphological control via variation of either period of CED scans or concentration of the precursor. Pt films with uniform nanograss structures have great electro-catalytic performance (electron-transfer resistance = 0.3 Ω) and intrinsic light-scattering (reflectivity ∼50{\%}), perfectly suitable for use as counter-electrodes for dye-sensitized solar cells (DSSCs). The DSSC device made with the Pt-nanograss counter-electrode and N719 dye attained efficiency η = 9.61{\%} of power conversion, which is 12{\%} enhanced from that fabricated according to a conventional thermal decomposition method (η = 8.55{\%}) under similar experimental conditions. When the devices were further optimized with a thick TiO2 film (17 + 5 μm) sensitized by Z907 dye using the CED-Pt counter-electrode, we obtained JSC (mA cm-2) = 19.44, VOC (V) = 0.742, and FF = 0.736, giving an exceptional power conversion efficiency of 10.62{\%}.",
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