scholarly journals Photoanode of Dye-Sensitized Solar Cells Based on a ZnO/TiO2Composite Film

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Lu-Ting Yan ◽  
Fang-Lue Wu ◽  
Lan Peng ◽  
Li-Juan Zhang ◽  
Pu-Jun Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Composite Film ◽  
Screen Printing ◽  
Zno Nanorods ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Spray Coating ◽  
Dye Sensitized ◽  
Conductive Glass ◽  
Sensitized Solar Cells

A photoanode of dye-sensitized solar cells based on a ZnO/TiO2composite film was fabricated on a transparent conductive glass substrate using different techniques including electrophoretic deposition, screen printing, and colloidal spray coating. The ZnOs used in the composite film were ZnO tetrapods prepared via thermal evaporation and ZnO nanorods obtained via hydrothermal growth. The structural and morphological characterizations of the thin composite films were carried out using scanning electron microscope (SEM). The best power conversion was 1.87%, which corresponds to the laminated TiO2/ZnO/TiO2structure prepared via screen printing.

The Effect of Diatomite on the Photoelectric Properties of TiO2 Dye Sensitized Solar Cells

2013 ◽  
Vol 448-453 ◽  
pp. 1452-1456
Author(s):  
Jiang Biao Feng ◽  
Ling Jun Hua ◽  
Feng Jun Shan ◽  
Zhi Gang Yan ◽  
Guo Chao Qi
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Conductive Glass ◽  
Photoelectric Properties ◽  
Sensitized Solar Cells

Diatomite/TiO2 composite films were prepared with diatomite and P25 TiO2 nanoparticles on conductive glass substrates. The surface morphology and phase composition of the film were characterized with scanning electron microscopy (SEM) and X ray diffraction (XRD). It is concluded that diatomite doped into the film will form granular cores. Dye sensitized solar cells (DSSC) were fabricated with the diatomite/TiO2 composite film as anode, and the photoelectric properties of the cells were tested. Results show that the doping of diatomite can significantly increase the open circuit voltage and short circuit current of DSSC. Optimized photoelectric properties can be acquired as 1.3 percent diatomite doped in TiO2 film.

The Effect of Scattering Layer on the Performance of Dye-Sensitized Solar Cells Using TiO2 Hollow Spheres/TiO2 Nanoparticles Films as Photoanodes

2015 ◽  
Vol 15 (10) ◽  
pp. 8295-8298 ◽  
Author(s):  
Su Kyung Park ◽  
Soong-Hyuck Suh ◽  
Min Woo Lee ◽  
Tae Kwan Yun ◽  
Jae Young Bae
Keyword(s):  
Solar Cells ◽  
Hollow Spheres ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Layered Composite ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Nanoparticle Layer ◽  
Promising Development ◽  
Sensitized Solar Cells

TiO2 hollow spheres were successfully synthesized using poly styrene as the template. Dyesensitized solar cells are fabricated based on double-layered composite films of TiO2 nanoparticles and TiO2 hollow spheres. The photoelectric conversion performances of Dye-sensitized solar cells based on TiO2 nanoparticles/TiO2 nanoparticles, TiO2 nanoparticles/TiO2 hollow spheres and TiO2 hollow spheres/TiO2 hollow spheres double-layered films are investigated, and their photoelectric conversion efficiencies were determined to 4.52, 7.10 and 5.48%, respectively. Dye-sensitized solar cells based on double layered composite films of TiO2 nanoparticles and TiO2 hollow spheres exhibit the highest photo-electric conversion efficiency mainly due to the combined effect of two factors, the high light scattering of over-layer hollow spheres that enhance harvesting light of the Dye-sensitized solar cells and the under-layer TiO2 nanoparticle layer that ensures good electronic contact between TiO2 film and FTO conducting glass. The double layered composite TiO2 film electrodes are a promising development in enhancing the performance of dye-sensitized solar cells.

Role of Pristine and Acid-Functionalized Fullerene on Breaking Dye Aggregates and its Impact on the Efficiency of Solar Cells

2014 ◽  
Vol 67 (5) ◽  
pp. 819
Author(s):  
Syed Mujtaba Shah ◽  
Zafar Iqbal ◽  
Muzaffar Iqbal ◽  
Naila Shahzad ◽  
Amina Hana ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Self Assembly ◽  
Zno Nanorods ◽  
Active Material ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Transmission Electron ◽  
Sensitized Solar Cells

Porphyrin dyes have an inherent tendency to aggregate. This leads to a self-quenching phenomenon that hinders electron transfer to the conduction band of semiconductors in dye-sensitized solar cells. Self-quenching adversely affects the efficiency of solar cells. Here, we report the interaction of porphyrin with pristine and acid-functionalized fullerene molecules on the surface of ZnO nanoparticles under chemisorbed conditions. Chemisorption of porphyrin only on ZnO nanoparticles instigates aggregation of the porphyrin molecules. These aggregates can be effectively broken by chemisorbing fullerene molecules on the surface of the ZnO nanoparticles. This is due to self-assembly formation processes because of porphyrin–fullerene interactions. The nanohybrid material, consisting of ZnO nanorods, acid-functionalized porphyrin, and fullerene derivatives, was characterized by UV–visible spectroscopy, fourier transform infrared spectroscopy, fluorescence spectroscopy, and transmission electron microscopy. The material generates better performing dye-sensitized solar cells when compared with those fabricated from porphyrin-based photo-active material.

Polyaniline/Graphene/Multi-Walled Carbon Nanotube Composites as Counter Electrode for Dye-Sensitized Solar Cells

2014 ◽  
Vol 1667 ◽  
Author(s):  
Yen-Chen Shih ◽  
Hsiao-Li Lin ◽  
King-Fu Lin
Keyword(s):  
Solar Cells ◽  
Composite Film ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Weight Ratio ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Multi Walled Carbon Nanotube ◽  
Electrochemical Deposition Method ◽  
Sensitized Solar Cells

ABSTRACTTo provide a counter electrode with lower-cost and simple production method for dye-sensitized solar cells (DSSCs), we developed polyaniline/graphene nanoplatelet/multi-walled carbon nanotube (PANi/GNP/MWCNT) composite films growing on glass substrates by using chemical/electrochemical deposition method and on fluorine-doped tin oxide (FTO)/glass substrates by using electrochemical deposition method respectively. A proper weight ratio of PANi/GNP/MWCNT (1/0.0030/0.0045) composite film depositing on FTO substrate as counter electrode with sheet resistance of 8.25±0.13 Ω/sq for DSSCs yielded power conversion efficiency (PCE) up to 7.45±0.08%, which has potential to replace the conventional Pt cell (7.62±0.07%). In addition, we also fabricated the DSSCs composed of a proper weight ratio of PANi/GNP/MWCNTs (1/0.0045/0.0060) composite film depositing on glass substrate as counter electrode. The sheet resistance of resulting composite film was 59.34±12.34 Ω/sq. These solar cells with FTO-free counter electrode exhibited a PCE of 2.90±0.09%.

Enhanced performance of dye-sensitized solar cells based on P25/Ta2O5 composite films

2016 ◽  
Vol 122 (4) ◽  
Author(s):  
Qingsong Jiang ◽  
Jian Gao ◽  
Lin Yi ◽  
Guang Hu ◽  
Jun Zhang
Keyword(s):  
Solar Cells ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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