Effect of thermal treatment on TiO2 nanorod electrodes prepared by the solvothermal method for dye-sensitized solar cells: Surface reconfiguration and improved electron transport

Zhao, Jianguo; Yao, Jianxi; Zhang, Yongzhe; Guli, Mina; Xiao, Li

doi:10.1016/j.jpowsour.2013.12.127

Cited by 33 publications

(14 citation statements)

References 41 publications

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“…Generally, the first gap (R s ) is related to the sheet resistance on the transparent conductive oxide (TCO) substrates and the contact resistance between TCO and TiO 2 . In addition, three semicircles can be observed from the impedance spectra, the semicircle in high frequency region represents the charge transfer resistance at the electrolyte/Pt-electrode interface (R pt ), the second semicircles are assigned to electron transfer at the interface between the TiO 2 /dye/electrolyte (R ct ), and the third semicircle observed in the low frequency region correspond to the characteristics of diffusion of the I − /I 3− redox electrolytes electron 9 29 . As shown in table 2 , the three DSSCs show similar values of R s and R pt , which ascribes to the use of the same electrolyte and counter electrodes.…”

Section: Resultsmentioning

confidence: 99%

Significant enhancement of power conversion efficiency for dye sensitized solar cell using 1D/3D network nanostructures as photoanodes

Wang

et al. 2015

Sci Rep

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The single–crystalline TiO2 nanorod arrays with rutile phase have attracted much attention in the dye sensitized solar cells (DSSCs) applications because of their superior chemical stability, better electron transport properties, higher refractive index and low production cost. However, it suffers from a low surface area as compared with TiO2 nanoparticle films. In order to enlarge the surface area of TiO2 nanorod arrays, the 1D nanorods/3D nanotubes sample was synthesized using a facile two-step hydrothermal process involving hydrothermal growth 1D/3D nanorods and followed by post-etching treatment. In such bi-layer structure, the oriented TiO2 nanorods layer could provide direct pathway for fast electron transportation, and the 3D nanotubes layer offers a higher surface area for dye loading, therefore, the 1D nanorods/3D nanotubes photoanode exhibited faster electron transport and higher surface area than either 1D or 3D nanostructures alone, and an highest efficiency of 7.68% was achieved for the DSSCs based on 1D nanorods/3D nanotubes photoanode with further TiCl4 treatment.

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Section: Resultsmentioning

confidence: 99%

Significant enhancement of power conversion efficiency for dye sensitized solar cell using 1D/3D network nanostructures as photoanodes

Wang

et al. 2015

Sci Rep

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“…It is well known that both the additional physical-chemical treatments of the TiO 2 layer [51,52], and the tuning of dye concentration and immersion time [53] modulate the solar cell efficiency. A significant improvement of the short circuit photocurrent density (~ 18%) is observed for (GQD-N3)DSSC compared to N3-DSSC.…”

Section: Dssc Analysesmentioning

confidence: 99%

Charge and energy transfer interplay in hybrid sensitized solar cells mediated by graphene quantum dots

Mihalache

Radoi

Mihaila

et al. 2015

Electrochimica Acta

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“…Results demonstrate a significantly enhanced photocatalytic degradation of methyl orange compared to commercial TiO 2 . Zhao and his co-workers [26] reported the synthesis of TiO 2 nanorod arrays (TNRs) directly on FTO glass (Figure 6c) through the solvothermal method, and thermal treatments. The results show that the crystal structure does not change due to thermal treatment.…”

Section: Solvothermal Methodsmentioning

confidence: 99%

One-Dimensional Titanium Dioxide and Its Application for Photovoltaic Devices

Mohammed¹,

Bashiri²,

Sufian³

et al. 2018

Titanium Dioxide - Material for a Sustainable Environment

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One-dimensional (1D) TiO 2 nanostructures (e.g., nanotubes, nanobelts, nanowires, and nanorods) have been considered to be very attractive candidates for various applications including photocatalytic degradation of pollutants, photocatalytic CO 2 reduction into energy fuels, water splitting, solar cells, supercapacitors, and lithium-ion batteries. More importantly, the dimensionality associated with zero-dimensional TiO 2 nanostructures gives unique physical properties, including a high aspect ratio structure, chemical stability, excellent electronic or ionic charge transfer, and a specific interface effect. This chapter elaborates on crystal structure and properties, preparation techniques, strategies for improving photocatalytic activity of 1D-TiO 2 nanostructure and its applications. Amongst all preparation techniques, the influence of experimental parameters on morphologies of 1D-TiO 2 nanostructure using hydro/solvothermal method is extensively explained. Furthermore, some critical engineering strategies to enhance the properties of 1D-TiO 2 nanostructures like increasing the surface area, extending the light absorption, and efficient separation of electrons/holes that advantage their potential applications are described. Moreover, a brief summary of their environmental and energy applications is provided.

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Effect of thermal treatment on TiO2 nanorod electrodes prepared by the solvothermal method for dye-sensitized solar cells: Surface reconfiguration and improved electron transport

Cited by 33 publications

References 41 publications

Significant enhancement of power conversion efficiency for dye sensitized solar cell using 1D/3D network nanostructures as photoanodes

Significant enhancement of power conversion efficiency for dye sensitized solar cell using 1D/3D network nanostructures as photoanodes

Charge and energy transfer interplay in hybrid sensitized solar cells mediated by graphene quantum dots

One-Dimensional Titanium Dioxide and Its Application for Photovoltaic Devices

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