Cubic titanium dioxide photoanode for dye-sensitized solar cells

Chae, Junjae; Kang, Misook

doi:10.1016/j.jpowsour.2010.12.109

Cited by 54 publications

(34 citation statements)

References 41 publications

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“…6a): a wide contact area between the facets facilitates an efficient interparticle charge transfer and enhances the photocatalytic activity [41]. However, when nanoparticles are randomly connected, the contact area at the boundaries is limited and the charge-pair separation through the particle boundaries is somewhat hindered.…”

Section: Photocatalytic and Photoelectrochemical Propertiesmentioning

confidence: 99%

Enhanced photocatalytic activity of {101}-oriented bipyramidal TiO2 agglomerates through interparticle charge transfer

Kong¹,

Lim²,

Lee³

et al. 2015

Applied Catalysis B: Environmental

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Section: Photocatalytic and Photoelectrochemical Propertiesmentioning

confidence: 99%

Enhanced photocatalytic activity of {101}-oriented bipyramidal TiO2 agglomerates through interparticle charge transfer

Kong¹,

Lim²,

Lee³

et al. 2015

Applied Catalysis B: Environmental

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“…The TiO 2 layer has an important role as an electron transportation medium [36][37][38][39]. The I-V curve of TiO 2 inverse opals with various particle diameters is shown in Fig.…”

Section: I-v Measurementmentioning

confidence: 99%

Pore size dependence of self-assembled type photonic crystal on dye-sensitized solar cells efficiency utilising Chlorine e6

et al. 2013

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There are few reports on photoelectric conversion efficiency using naturally-occurring dyes for dyesensitized solar cells (DSSC). This is because the matching with an excited electronic level of naturally-occurring dye to the conduction band of semiconductor is problematic; the excited electrons are easily relaxed to the steady state with fluorescence or heat emission. We examined the fluorescence inhibition effect of a self-assembled photonic crystal using Chlorine e6 dye. Chlorine e6 is derived from chlorophyll and has a long excited electron lifetime. We prepared TiO 2 inverse opals with various particle sizes by liquid phase deposition and described their effect on DSSCs with regard to structural, optical and electrochemical properties. In addition, we explored the implications of fluorescence lifetime measurements relative to the photonic band diagram and the amount of adsorbed dye. Although the main factor affecting the external photoelectric conversion efficiency was the diffusion resistance of the electrolyte and the contact resistance between TiO 2 interfaces, the possibility that the dye fluorescence lifetime, i.e. the photonic band structure, can affect the internal quantum efficiency per one dye molecule was also investigated.

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“…For the 30% of theoretical photoelectric conversion efficiency, the maximum I sc should reach 33(mA/cm 2 ). However, I sc is usually in the range of 10~15 (mA/cm 2 ) and the highest one is 20.83 (mA/cm 2 ) achieved by J. Chae et al [3]. Obviously, there is a large room for enhancement in the short circuit current density.…”

Section: Introductionmentioning

confidence: 96%

An Exploratory Study on TiO2 Film Thickness Related Photocurrent Decreasing in Dye-sensitized Solar Cells

Zheng¹,

Wang²,

Tang³

2014

Proceedings of the 2015 International Conference on Material Science and Applications

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Abstract. This paper studies the effects of titanium dioxide films with different thickness on the photocurrent. The results show that titanium dioxide itself is not able to reduce Isc as long as the film thickness is less than 50μm-100μm (the electron diffusion length).The real factors affecting the photocurrent is the number of photoelectrons which could be injected into the TiO 2 conduction band generated by dye adsorped on the surface of TiO 2 . The thickness of the film provides a huge space for the dye molecules, but dye molecules quenching might play an important role to prevent the photoelectrons from injecting into the conducting band of TiO 2 . The improvement mechanism of Isc was discussed and an intriguing approach to enhance Isc was addressed.

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Cubic titanium dioxide photoanode for dye-sensitized solar cells

Cited by 54 publications

References 41 publications

Enhanced photocatalytic activity of {101}-oriented bipyramidal TiO2 agglomerates through interparticle charge transfer

Enhanced photocatalytic activity of {101}-oriented bipyramidal TiO2 agglomerates through interparticle charge transfer

Pore size dependence of self-assembled type photonic crystal on dye-sensitized solar cells efficiency utilising Chlorine e6

An Exploratory Study on TiO2 Film Thickness Related Photocurrent Decreasing in Dye-sensitized Solar Cells

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