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In this paper, ZnO nanorod arrays used as transparent conducting oxide(TCO) were fabricated on ZnO seed layers though a hydrothermal method and the seed layers were prepared by sol-gel method. Different pre-annealing temperature varying from 300°C to 400°C and different hydrothermal precursor concentration varying from 0.005 to 0.15M were studied. The effects of seed layers pre-annealing temperature...
Summary form only given.Recently, there is an increased interest in quantum dot sensitized solar cell (QDSSC), i.e., applying semiconductor quantum dots (QDs) in dye-sensitized solar cells [1]. However, QDSSCs have shown comparatively lower efficiencies than expected. One possible reason for the poor efficiency of QDSSC is the difficulty of assembling the QDs on ZnO surface to obtain a well-covered...
We shall present a cosensitized solar cell with sequentially assembled CdS quantum dots (QDs) and black dye on a flower-like ZnO rod nanostructure. As revealed by UV-vis absorption spectrum and scanning electron microscopy CdS QDs and black dye can be effectively adsorbed onto a flower-like ZnO nanorod array. Besides acting as a sensitizer, CdS QDs layer helps to prevent formation of Zn2+/dye complex...
ZnO nano-flowers were prepared by low temperature solution-phase method. Four different anodes were prepared on FTO through doctor-blade method. Surface morphology of thin films ,absorption spectrum after adsorbing dye were investigated by scanning electron microscopy, UV-visible spectrophotometer. The photovoltaic performance of DSSC solar cells was investigated by XJCM-8S DSSC solar cells testing...
In this study, we investigated the properties of ZnO nanostructures grown by a sol-gel method on glass substrates. First, the seed layer of ZnO were formed using zinc acetate dihydrate (Zn(CH3COOH)2??2H2O), 2-propanol (CH3CH2 CH2OH), and sodium hydroxide (NaOH) as precursor material, solvent and sol stabilizer, respectively. The three dimensional ZnO nanostructures were then grown by the CBD(Chemical...
The long term performance of Cu(In, Ga)Se2 (CIGS) solar cells were strongly affected by their ability in withstanding surrounding weather change, including temperature, humidity, and light, etc. In our experiment, we focused on the stability study of window layer materials of undoped ZnO (IZO) and Al:ZnO (AZO) using damp heat and dry heat treatment. We found that the Al dopant had enhanced the capture...
Summary form only given. Transparent conducting zinc oxide (ZnO) films have been extensively studied in recent several years because it is the non-poisonous, abundant and cheap material. ZnO films have been deposited by various techniques such as r.f. sputtering, pyrolysis and metal-organic CVD. Industrial manufacturing of the solar cells requires a development of cheap, effective and scalable technology...
Improvement of dye sensitized solar cell was investigated using methyl-violet dye and nanocrystalline ZnO thin film electrodes. A low cost fabrication method and low cost materials were used to prepare this photocell. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the microstructure and surface properties of dye coated ZnO electrodes. According to the...
We are presenting porous-structured ZnO films grown by two-step chemical bath deposition (CBD), which has the potential to be used as a porous electrode in dye-sensitized solar cells (DSSCs). ZnS films were deposited on corning glass substrates by a stirred aqueous solution. Subsequent oxidization of ZnS films gave rise to ZnO thin films. The ZnO films exhibited a strong (002) diffractive peak, which...
The nanotechnology with chemical deposition (CD) and rapid photothermal processing (RPP) of nanostructured ZnO thin films for solar cell applications was elaborated. The influence of growth processes and the impact of RPP on surface morphology, particles size and resistivity values are presented and discussed. The ZnO thin films were deposited on silicon substrates by chemical deposition method at...
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