Three-dimensional self-branching anatase TiO<sub>2</sub> nanorods: morphology control, growth mechanism and dye-sensitized solar cell application

Yang, Weiguang; Xu, Yueyang; Tang, Ying; Wang, Chen; Hu, Yuling; Huang, Lu; Liu, Jin; Luo, Jun; Guo, Haibo; Chen, Yigang; Shi, Weimin; Wang, Yali

doi:10.1039/c4ta02761b

Cited by 24 publications

(11 citation statements)

References 72 publications

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“…Nevertheless, it was discovered that the efficiency can be further improved to 8.53% when TiO 2 nanorods were grown on P25 nanoparticles as light‐scattering layer. Yang et al studied the synthesis of self‐branching anatase TiO 2 nanorods 3D hierarchical nanostructures for DSSC application . Interestingly, high dye uptake density was observed in this configuration due to the large percentage of exposed {010} facets, and high efficiency of 7.17% was reported.…”

Section: Photo‐anodementioning

confidence: 99%

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Recent advances in photo-anode for dye-sensitized solar cells: a review

2017

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Summary Dye‐sensitized solar cell (DSSC) attracts immense interest in the last few decades due to its various attractive features such as low production cost, ease of fabrication and relatively high conversion efficiency, which make it a strong competitor to the conventional silicon‐based solar cell. In DSSC, photo‐anode performs two important functions, viz. governs the collection and transportation of photo‐excited electrons from dye to external circuit as well as acts as a scaffold layer for dye adsorption. The photo‐anode usually consists of wide band gap semiconducting metal oxides such as titanium dioxide (TiO2) and zinc oxide (ZnO) deposited on the transparent conducting oxide substrates. The morphology and composition of the semiconductor oxides have significant impact on the DSSC photovoltaic performance. Therefore, enormous research efforts have been undertaken to investigate the influences of photo‐anode modifications on DSSC performance. The modifications can be classified into three categories, namely interfacial modification through the introduction of blocking and scattering layer, doping with non‐metallic anions and metallic cations and replacing the conventional mesoporous semiconducting metal oxide films with one‐dimensional or two‐dimensional nanostructures. In the present review, the previously mentioned modifications on photo‐anode are summarized based on the recent findings, with particular emphasis given to published works for the past 5 years. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Photo‐anodementioning

confidence: 99%

“…Nevertheless, it was discovered that the efficiency can be further improved to 8.53% when TiO 2 nanorods were grown on P25 nanoparticles as light-scattering layer. Yang et al studied the synthesis of self-branching anatase TiO 2 nanorods 3D hierarchical nanostructures for DSSC application [118].…”

Section: Nanowiresmentioning

confidence: 99%

Recent advances in photo-anode for dye-sensitized solar cells: a review

2017

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“…The FESEM image showed that these spindle-like nanorods were composed of face-to-face stacked anisotropic nanoplatelets. In other words, the nanoplates, aggregating with the face-to-face plane to reduce the surface energy of the primary nanoplates, eventually formed spindle-like nanorods [33,37,38]. As the aging time increased further, the spindle-like nanorods dominated uniformly at the expense of the small nanoparticles, and eventually prism-like nanorods dominated without small nanoparticles after 6 h of aging.…”

Section: Resultsmentioning

confidence: 99%

High-Aspect Ratio β-Ga2O3 Nanorods via Hydrothermal Synthesis

et al. 2018

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High-aspect ratio β-Ga2O3 nanorods consisting of prism-like crystals were formed using gallium oxyhydroxide and ammonia hydroxide via a hydrothermal synthesis followed by the subsequent calcination process. The formation of high-aspect ratio β-Ga2O3 nanorods was attributed to the oriented attachment mechanism that was present during the hydrothermal synthesis. A field-effect transistor was fabricated using the high-aspect ratio β-Ga2O3 nanorod, and it exhibited the typical charge transfer properties of an n-type semiconductor. This facile approach to forming high-aspect ratio nanorods without any surfactants or additives can broaden the science of β-Ga2O3 and expedite the integration of one-dimensional β-Ga2O3 into future electronics, sensors, and optoelectronics.

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“…Well-defined single-crystal surfaces of TiO 2 are expected to control the orientation of adsorbed dyes. Previous papers report the shape effects on η, 20 photocatalytic activity, 21 and electron transfer rates from dyes to the substrate 22 using shape-controlled TiO 2 nanoparticles. However, a shape-controlled nanoparticle is composed of several kinds of faces, edges, and corners; it is difficult to determine the factors governing the structural effects clearly.…”

Section: Introductionmentioning

confidence: 99%

Structural Effects on the Incident Photon-to-Current Conversion Efficiency of Zn Porphyrin Dyes on the Low-Index Planes of TiO₂

Ide

Fujimori²,

Tsuji³

et al. 2017

ACS Omega

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The structural effects of substrates on the incident photon-to-current conversion efficiency (IPCE) of Zn porphyrin (ZnP) dyes (ZnP-ref, YD2, and ZnPBAT) have been studied on well-defined single-crystal surfaces of rutile TiO 2 (TiO 2 (111), TiO 2 (100), and TiO 2 (110)). IPCE of ZnP-ref depends on the structure of the substrates remarkably: TiO 2 (100) < TiO 2 (110) < TiO 2 (111). IPCE of ZnP-ref/TiO 2 (111) is 13 times as high as that of ZnP-ref/TiO 2 (100) at 570 nm. YD2 and ZnPBAT also give the highest IPCE on TiO 2 (111). The relative coverages of the porphyrin dyes give the following order: TiO 2 (111) < TiO 2 (110) < TiO 2 (100). This order is opposite to that of IPCEs. The orientation of the dyes is predicted using density functional theory calculations on simplified models of TiO 2 surfaces. The highest IPCE on TiO 2 (111) is attributed to the high rate of electron transfer through the space due to the fluctuation of the tilt angle of the adsorbed dyes.

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Three-dimensional self-branching anatase TiO₂ nanorods: morphology control, growth mechanism and dye-sensitized solar cell application

Abstract: Three-dimensional self-branching anatase TiO2 was prepared by a facile, one-step hydrothermal method for high-performance dye-sensitized solar cells.

Cited by 24 publications

References 72 publications

Recent advances in photo-anode for dye-sensitized solar cells: a review

Recent advances in photo-anode for dye-sensitized solar cells: a review

High-Aspect Ratio β-Ga2O3 Nanorods via Hydrothermal Synthesis

Structural Effects on the Incident Photon-to-Current Conversion Efficiency of Zn Porphyrin Dyes on the Low-Index Planes of TiO₂

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Three-dimensional self-branching anatase TiO2 nanorods: morphology control, growth mechanism and dye-sensitized solar cell application

Abstract: Three-dimensional self-branching anatase TiO2 was prepared by a facile, one-step hydrothermal method for high-performance dye-sensitized solar cells.

Cited by 24 publications

References 72 publications

Recent advances in photo-anode for dye-sensitized solar cells: a review

Recent advances in photo-anode for dye-sensitized solar cells: a review

High-Aspect Ratio β-Ga2O3 Nanorods via Hydrothermal Synthesis

Structural Effects on the Incident Photon-to-Current Conversion Efficiency of Zn Porphyrin Dyes on the Low-Index Planes of TiO2

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Product

Resources

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Three-dimensional self-branching anatase TiO₂ nanorods: morphology control, growth mechanism and dye-sensitized solar cell application

Structural Effects on the Incident Photon-to-Current Conversion Efficiency of Zn Porphyrin Dyes on the Low-Index Planes of TiO₂