ZnO Nanotube Based Dye-Sensitized Solar Cells

Martinson, Alex B. F.; Elam, Jeffrey W.; Hupp, Joseph T.; Pellin, Michael J.

doi:10.1021/nl070160+

Cited by 758 publications

(510 citation statements)

References 25 publications

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“…[7][8][9] It is not surprising then, that several novel photoanode architectures with the prospect of rapid charge collection have recently been explored. 4,[10][11][12][13] Access to these architectures has been facilitated by several attractive fabrication strategies, among them (a) surfactant-controlled crystallization, 10,14 (b) controlled film corrosion, 15 and (c) templated atomic-layer deposition (ALD). 11,[16][17][18][19][20][21][22][23][24] Pseudo 1-D nanostructures, particularly with single or polycrystalline domains, are especially interesting since electrons traveling through the nanoparticle semiconductors are believed to move under diffusive control.…”

Section: Introductionmentioning

confidence: 99%

Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly Efficient Charge Collection and Exceptionally Rapid Dynamics

et al. 2009

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Dye-sensitized solar cells based on ordered arrays of polycrystalline ZnO nanotubes, 64 µm in length, are shown to exhibit efficient electron collection over the entire photoanode array length. Electrochemical impedance spectroscopy, open-circuit photovoltage decay analysis, and incident-photon-to-current efficiency spectra are used to quantify charge transport and lifetimes. Despite the relatively thick photoanode, the charge extraction time is found to be faster than observed in traditional TiO 2 nanoparticle photoanodes. If the extraction dynamics are interpreted as diffusive, effective electron diffusion coefficients of up to 0.4 cm 2 s -1 are obtained, making these pseudo-1D photoanodes the fastest reported for an operating DSC to date. Rapid electron collection is of practical significance because it should enable alternative redox shuttles, which display relatively fast electron-interception dynamics, to be employed without significant loss of photocurrent.

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Section: Introductionmentioning

confidence: 99%

Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly Efficient Charge Collection and Exceptionally Rapid Dynamics

et al. 2009

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“…8 Up to date, photoelectrodes based on ZnO nanowires, nanorods, and nanotubes have been prepared by various techniques, with energy conversion efficiency of 0.5%-1.6%. [9][10][11] Alternatively, electrospinning technique has also provided a simple and cost-effective way to prepare semiconductor oxide with 1D nanostructure. 12 However, the application of electrospun nanofibers in DSSC is limited by the poor adhesion of electrospun nanofibers to the FTO substrate.…”

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confidence: 99%

Facile construction of nanofibrous ZnO photoelectrode for dye-sensitized solar cell applications

Zhang

Zhu

Liu

et al. 2009

Applied Physics Letters

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A facile method to prepare nanofibrous ZnO photoelectrodes with tunable thicknesses by electrospinning is reported. A “self-relaxation layer” is formed spontaneously between ZnO nanofibers and fluorine-doped SnO 2 (FTO) substrate, which facilitates the release of interfacial tensile stress during calcination, resulting in good adhesion of ZnO film to FTO substrate. Dye-sensitized solar cells (DSSCs) based on the nanofibrous ZnO photoelectrodes are fabricated and an energy conversion efficiency of 3.02% is achieved under irradiation of AM 1.5 simulated sunlight with a power density of 100 mW cm −2, which shows good promise of electrospun nanofibrous ZnO as the photoelectrode in DSSCs

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“…Much attention has been paid to dye-sensitized solar cells (DSSCs) owing to their low cost, simpli¿ed manufacturing process and possible of large-scale production for next generation solar cells [1,2] . Recently, ZnO with one dimensional (1-D) structures, such as nanowires [3] , nanograss [4] and nanotubes [5] , have been built for improving conversion efficiency of DSSCs because of their superior electron mobility. However, this kind of DSSCs is commonly based on a rigid FTO or ITO glass substrate, which restricts its adaptability during transportation, installation and flexible application.…”

Section: Introductionmentioning

confidence: 99%

Controllable Synthesis of ZnO Nanorod-nanosheets Hierarchical Nanostructure on a Stainless Steel Mesh Via A Facile Hydrothermal Growth

Zhu¹,

Zhao²,

Zhang³

et al. 2016

MATEC Web Conf.

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Abstract. ZnO nanorods-nanosheets (NR-NS) hierarchical nanostructure consisted of long nanorod and thin nanosheet branches have been built on a stainless steel mesh via a two-step hydrothermal growth process. The related structures and morphologies of the as-prepared products were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The XRD results confirmed that the obtained samples were wurtzite hexagonal structured ZnO. The FE-SEM observations showed that the smooth surfaces of nanorods were covered by nanosheets, resulting in the enhancement of internal surface area. It was found that trisodium citrate played a crucial role in the formation of ZnO NR-NS hierarchical nanostructures, and accordingly, the rational growth mechanism was suggested.

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ZnO Nanotube Based Dye-Sensitized Solar Cells

Cited by 758 publications

References 25 publications

Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly Efficient Charge Collection and Exceptionally Rapid Dynamics

Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly Efficient Charge Collection and Exceptionally Rapid Dynamics

Facile construction of nanofibrous ZnO photoelectrode for dye-sensitized solar cell applications

Controllable Synthesis of ZnO Nanorod-nanosheets Hierarchical Nanostructure on a Stainless Steel Mesh Via A Facile Hydrothermal Growth

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