Transparent conductive oxide layer-less dye-sensitized solar cells consisting of floating electrode with gradient TiOx blocking layer

Yoshida, Yoshikazu; Pandey, Shyam S.; Uzaki, Kenshiro; Hayase, Shuzi; Kono, Mitsuru; Yamaguchi, Yoshihiro

doi:10.1063/1.3089845

Cited by 42 publications

(40 citation statements)

References 15 publications

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“…As such, a gradient TiO x blocking layer was proved to be effective in improving the film adhesion and therefore enhancing photovoltaic performance. 135 On the other hand, challenges also exist in such flexible DSCs:…”

Section: Merits Challenges and Outlookmentioning

confidence: 99%

Conformal Growth of Anodic Nanotubes for Dye-Sensitized Solar Cells: Part II. Nonplanar Electrode

Sun¹,

Zhang²,

Wang³

2014

j. nanosci. nanotech.

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Anodic titania nanotube array features highly ordered alignment as well as porous nature, and exhibits intriguing properties when employed in a variety of applications. All these profit from the continuous efforts on controlling the nanotube configurations. Recently, nonplanar electrodes have also been used to grow the nanotubes besides the conventional planar counterparts. As such, it is of great interest and significance to complete a picture to link the nanotubes grown on planar and various nonplanar electrodes for a comprehensive understanding of nanotube growing manners, in an attempt to boost their future applications. In the first part of this review, planar electrodes are focused with regard to nanotube growth and application in dye-sensitized solar cells. In this part, the nanotubes grown on patterned or curved surfaces are discussed first with reference to a similar structure of alumina nanopores, which are subsequently used to mirror the growth of nanotubes on cylindrical electrodes (i.e., titanium wires or meshes). The last section focuses on titanium tubular electrodes which are attractive for thermal fluids in view of the drastically reduced thermal conductivity in the presence of anodic nanotubes. As a recent hot topic, wire-shaped dye-sensitized solar cells are deliberated in terms of cell structure, efficiency calculation, merits, challenges and outlook.

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Section: Merits Challenges and Outlookmentioning

confidence: 99%

Conformal Growth of Anodic Nanotubes for Dye-Sensitized Solar Cells: Part II. Nonplanar Electrode

Sun¹,

Zhang²,

Wang³

2014

j. nanosci. nanotech.

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“…We focused on structures and fabrication process of transparent conductive oxide less DSCs (TCO-less DSCs), where porous metal electrodes are fabricated at the back side of titania/dye layers as back-contact structures as shown in Fig.1. [3][4][5][6][7] We have already reported flat type, fiber type, and cylinder type dye sensitized solar cells [8][9][10][11][12]. In this report, how to optimize the structure for each cell is discussed.…”

Section: Introductionmentioning

confidence: 96%

Transparent Conductive Oxide Less Flexible Dye-sensitized Solar Cells with Flat and Cylinder Shapes

et al. 2012

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Transparent conductive oxide less flexible dye-sensitized solar cells (TCO-less DSC) with flat and cylinder shapes are reported. The cell consists of a plastic cover, a flexible titania/dye sheet back contacted with a metal mesh sheet, a gel electrolyte sheet, and Pt layer on a Ti sheet. How to increase the efficiency were discussed. We concluded that making a titania/dye layer on a metal mesh sheet thinner and using a thinner electrolyte layer were effective for increasing the efficiency. A flat TCO-less DSC with 6.1 % efficiency and a cylindrical TCO-less DSC with 5.1 % efficiency are reported.

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“…The preparation process of the porous Ti electrode is described in our previous paper. 21 Collected electrons are directed to a counter Ti electrode with a Pt layer and are injected into I 2 in an electrolyte to form I -. I -species diffuse in an electrolyte layer and give electrons to oxidized dye molecules.…”

Section: Methodsmentioning

confidence: 99%

“…A mixture solution of tetrapod-shaped ZnO (Panatetra WZ-0501 -Panasonic, Matsushita Electric Industrial Co., Ltd., Toyonaka, Osaka, Japan) and P25 -Degussa (Evonik Degussa Corporation, Parsippany, NJ, USA) in ethyl alcohol was sprayed on the porous TiO 2 layer, where the tetrapod-shaped ZnO acts as a template of nanoholes. 21 The glass tube was baked again at 450…”

Section: Methodsmentioning

confidence: 99%

Transparent conductive oxideless tandem dye-sensitized solar cells consisting of light-splitting structures

et al. 2011

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Abstract. Fiber and pillar tandem dye-sensitized solar cells (DSCs), which do not need transparent conductive oxideless layer tandem cells (TCO-less TAN), are fabricated and their fundamental tandem properties are evaluated. TCO-less TAN cells consist of a light-splitting waveguide and TCO-less DSCs. The TCO-less DSC is composed of a nanoporous titania back-contacted with a porous Ti electrode or a nanoporous titania sheet supported by a stainless steel mesh whose surface was protected with TiO x thin layers. Two kinds of light-splitting structures are introduced. One is a light-splitting structure in which polystyrene particles with different diameters are dispersed in water. The other consists of dichroic mirrors. These light-splitting structures are coupled with TCO-less DSCs stained with dyes absorbing light corresponding to these split lights. Open circuit voltages (V oc ) of these TCO-less tandem DSCs are two times (two tandem structure) or three times (three tandem structure) higher than those of the corresponding single cells, demonstrating that these structures work as tandem cells. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Transparent conductive oxide layer-less dye-sensitized solar cells consisting of floating electrode with gradient TiOx blocking layer

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Cited by 42 publications

References 15 publications

Conformal Growth of Anodic Nanotubes for Dye-Sensitized Solar Cells: Part II. Nonplanar Electrode

Conformal Growth of Anodic Nanotubes for Dye-Sensitized Solar Cells: Part II. Nonplanar Electrode

Transparent Conductive Oxide Less Flexible Dye-sensitized Solar Cells with Flat and Cylinder Shapes

Transparent conductive oxideless tandem dye-sensitized solar cells consisting of light-splitting structures

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