Dependence of ZnO-based dye-sensitized solar cell characteristics on the layer deposition method

Dumbravă, Anca; Prodan, G.; Georgescu, Adrian; Moscalu, Florin

doi:10.1007/s12034-014-0793-8

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…3) was also investigated by TEM, using BFTEM (Bright Field TEM) images. The particles mean diameter 38 and shape factors (dimensionless quantities with values between 0 and 1, which represent the degree of deviation from an ideal shape) were calculated from BFTEM images. The HRTEM images and electron diffraction patterns, resulted from selected area electron diffraction (SAED), were used for the identification of powders structure.…”

Section: Resultsmentioning

confidence: 99%

“…67 New materials which expand the adsorption range of ZnO in visible domain and enhance solar energy capture, by coupling of the zinc oxide to a narrower bandgap sensitizing semiconductor in composite materials 30,68 were obtained. The sensitizing of ZnO surface with pigments, as in dye sensitized solar cells 8,38 is another solution for enhancing the solar energy capture. The photocatalytic activity of ZnO depends on its properties and can be tuned by synthesis route.…”

Section: Resultsmentioning

confidence: 99%

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Influence of Synthesis Route on the Structure and Properties of Zinc Oxide Nanoparticles Functionalized with Anthocyanins from Raw Vegetable Extracts

Dumbravă

Berger

Prodan

et al. 2017

ECS J. Solid State Sci. Technol.

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Blue zinc oxide nanopowders functionalized with anthocyanins from red cabbage were obtained by using two synthesis routes, i.e. one-pot synthesis and sensitization of white ZnO nanopowder. The structure and properties (optical, photocatalytic) of functionalized zinc oxide nanopowders where determined by XRD, SEM, TEM, HRTEM, electron diffraction, specific surface area analysis, FTIR, UV-Vis and PL spectroscopy, and compared with those of pristine zinc oxide nanopowder, obtained in similar conditions. A detailed structural study of nanoparticles (cell parameters, lattice strain, and crystallite size) was performed on the basis of electron diffraction data. The functionalized zinc oxide nanoparticles obtained by one-pot method present smaller particles size and different morphology in comparison with the other zinc oxide samples, exhibiting also the highest specific surface area and best photocatalytic activity in the discoloration of a Congo red solution (88.1%, after 120 min).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Influence of Synthesis Route on the Structure and Properties of Zinc Oxide Nanoparticles Functionalized with Anthocyanins from Raw Vegetable Extracts

Dumbravă

Berger

Prodan

et al. 2017

ECS J. Solid State Sci. Technol.

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“…Dye-sensitized solar cells (DSSCs) have attracted great attention over the past decade due to high-energy conversion efficiency, simple manufacturing process and low production cost [1][2][3][4]. Transparent conductive oxides as substrate, mesoporous metal oxide semiconductor thick films, dye sensitizers, electrolytes and counter electrodes are the main components of a typical DSSC [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of $$\hbox {TiO}_{2}$$ TiO 2 particle size and conductivity of the CuCrO $$_{2}$$ 2 nanoparticles on the performance of solid-state dye-sensitized solar cells

Asemi

Ghanaatshoar

2017

Bull Mater Sci

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Solid-state dye-sensitized solar cells have been fabricated with mesoporous TiO 2 photoanode and N719 dye as photosensitizer. First, TiO 2 and non-doped, Zn-and Mg-doped CuCrO 2 nanoparticles have been synthesized by sol-gel method. In addition, the TiO 2 pastes have been prepared through Pechini-type sol-gel method. The effect of TiO 2 particle size, mesoporous TiO 2 photoanode thickness and solid-state electrolyte thickness on the efficiency of the fabricated devices has been investigated. Our results show that in spite of the low amount of dye loading for photoanode with large TiO 2 nanoparticles (80-180 nm), the dye-sensitized solar cell made from it has higher efficiency than that constructed from the photoanode comprising of small particles about 10-15 nm in size. The higher efficiency is attributed to the longer diffusion length of electrons because of a better electron transport and penetration of a large amount of CuCrO 2 nanoparticles in the porous structure of TiO 2 photoanode. By using the doped CuCrO 2 nanoparticles, the efficiency has been increased from 0.027% for TiO 2 /N719 dye/CuCrO 2 to 0.033% for TiO 2 /N719 dye/CuCrO 2 :Zn and further increased to 0.042% for TiO 2 /N719 dye/CuCrO 2 :Mg. The efficiency enhancement by doping is ascribed to the conductivity improvement due to the presence of impurity atoms.

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“…Nanostructured ZnO has widely been used as photoelectrode in dye-sensitized solar cell [2][3][4]. ZnO is well known as n-type extrinsic semiconductor having wide band gap of 3.37 eV [5].…”

Section: Introductionmentioning

confidence: 99%

Dye-sensitized Solar Cell Based on Flower-like ZnO Nanoparticles as Photoanode and Natural Dye as Photosensitizer

Agus¹,

Irmansyah²,

Maddu³

2016

J. Nano- Electron. Phys.

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In this paper was reported the fabrication of dye-sensitized solar cell utilizing flower-like ZnO nanoparticle as photoanode and natural dye (anthocyanin) extracted from Lampeni (Ardisia humilis Vahl) fruit as photosensitizer. Anthocyanin dye extracted from Lampeni (Ardisia humilis Vahl) fruit shows a wide range of absorption spectra covering from 400 nm to 600 nm, which suitable for application as sensitizer in dye-sensitized solar cell. Flower-like ZnO was synthesized by precipitation method from mixed solution of zinc acetate dihydrate and KOH. X-ray diffraction analysis of ZnO was found a hexagonal structure with lattice parameters a  b  3.25 Ǻ and c  5.21 Ǻ, while average crystal size (ACS) was found 23.403 nm. The observation by SEM shows a flower-like structure arranged from ZnO nanorods. Optical absorption spectra of ZnO shows a strong absorption under 350 nm, and sharp absorption transition occurs around 350 nm from which the bandgap energy of ZnO was determined. Using Tauc plot method, bandgap energy of ZnO was found 3.2 eV. The assembled solar cell has energy conversion efficiency about of 0.03 % with fill factor of 0.25 and maximum power output of 12.8 Watt.

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Dependence of ZnO-based dye-sensitized solar cell characteristics on the layer deposition method

Cited by 6 publications

References 36 publications

Influence of Synthesis Route on the Structure and Properties of Zinc Oxide Nanoparticles Functionalized with Anthocyanins from Raw Vegetable Extracts

Influence of Synthesis Route on the Structure and Properties of Zinc Oxide Nanoparticles Functionalized with Anthocyanins from Raw Vegetable Extracts

Influence of $$\hbox {TiO}_{2}$$ TiO 2 particle size and conductivity of the CuCrO $$_{2}$$ 2 nanoparticles on the performance of solid-state dye-sensitized solar cells

Dye-sensitized Solar Cell Based on Flower-like ZnO Nanoparticles as Photoanode and Natural Dye as Photosensitizer

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