Rutile TiO2 nano-branched arrays on FTO for dye-sensitized solar cells

Wang, Hua; Bai, Yusong; Wu, Qiong; Zhou, Wei; Zhang, Hao; Li, Jinghong; Guo, Lin

doi:10.1039/c1cp20351g

Cited by 144 publications

(82 citation statements)

References 31 publications

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“…Nano-architectured TiO 2 semiconductors have been extensively studied in the last few decades mainly due to their advantageous properties such as high adsorption ability, excellent photoelectrochemical activities and large specific surface area [1][2][3] . TiO 2 -based materials are widely applied in sensors [4][5][6][7][8][9] , pollutant degradation 10 , hydrogen generation 11 , bio-applications 12,13 , and photocatalysis [14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

et al. 2017

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The evolution of TiO 2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO 2 nanotube structure can be efficiently controlled by the anodization time. For anodization times less than 30 minutes, a compact oxide layer is formed, followed by double-walled nanotube formation up to 120 minutes and single-walled nanotubes up to 240 minutes. XPS analyses show that the samples obtained with short anodization time have a high carbon content and oxygenated surface species compared to the longer-time anodized sample; however, binding energy peaks for Ti 2p remained invariant. The performances of TiO 2 nanotubular photoelectrodes were evaluated in photoelectrochemical water splitting where TiO 2 nanotubes anodized for 120 minutes presented the best performance that was related to their optimal morphology and charge transportation.

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Section: Introductionmentioning

confidence: 99%

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

et al. 2017

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“…By optimizing these parameters, it is possible to obtain high efficiency DSSCs [22,42]. In this study, we comparatively study the effect of Au NPs on DSSC efficiency by defining a baseline (with no Au NPs) device as reference.…”

Section: Introductionmentioning

confidence: 99%

Effect of Au nano-particles on TiO2 nanorod electrode in dye-sensitized solar cells

Ghaffari

Cosar

Yavuz

et al. 2012

Electrochimica Acta

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a b s t r a c tAu nano particles (NPs) were deposited on vertically grown TiO 2 nanorod arrays on FTO substrate by hydrothermal process. Metal nanoparticles were loaded onto the surface of TiO 2 nanorods via photochemical reduction process under ultraviolet irradiation. X-ray diffraction (XRD), electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) analysis were used to characterize the as-prepared Au/TiO 2 nanorod composites. Current density-voltage (J-V) measurements were obtained from a two-electrode sandwich type cell. The presence of Au nanoparticles can help the electron-hole separation by attracting photoelectrons. Addition of Au nanoparticles to the TiO 2 nanorod significantly increased the fill factor and J SC (short circuit current density). The application of Au NPs TiO 2 nanorods in improving the performance of DSSCs is promising.

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“…One of the approaches to increase the surface area for improving the device performance is to increase the length of 1D nanostructures 20 . Another classical solution is to decorate the 1D nanostructures with dendritic NR branches [21][22][23] . For example, several studies regarding long NWs or the assembly of 1D nanostructures into three-dimensional (3D) hierarchical tree-like or bush-like branched NW structures have been reported [24][25][26][27][28][29] .…”

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confidence: 99%

Maximizing omnidirectional light harvesting in metal oxide hyperbranched array architectures

et al. 2014

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The scrupulous design of nanoarchitectures and smart hybridization of specific active materials are closely related to the overall photovoltaic performance of an anode electrode. Here we present a solution-based strategy for the fabrication of well-aligned metal oxide-based nanowire-nanosheet-nanorod hyperbranched arrays on transparent conducting oxide substrates. For these hyperbranched arrays, we observe a twofold increment in dye adsorption and enhanced light trapping and scattering capability compared with the pristine titanium dioxide nanowires, and thus a power conversion efficiency of 9.09% is achieved. Our growth approach presents a strategy to broaden the photoresponse and maximize the light-harvesting efficiency of arrays architectures, and may lead to applications for energy conversion and storage, catalysis, water splitting and gas sensing.

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Rutile TiO2 nano-branched arrays on FTO for dye-sensitized solar cells

Cited by 144 publications

References 31 publications

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

Effect of Au nano-particles on TiO2 nanorod electrode in dye-sensitized solar cells

Maximizing omnidirectional light harvesting in metal oxide hyperbranched array architectures

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