scholarly journals Effect of Mn Doping on Properties of CdS Quantum Dot-Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Tianxing Li ◽  
Xiaoping Zou ◽  
Hongquan Zhou
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Conversion Efficiency ◽  
Precursor Solution ◽  
Fixed Number ◽  
Production Costs ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells

Quantum dot-sensitized solar cells (QDSSCs) have received extensive attention in recent years due to their higher theoretical conversion efficiency and lower production costs. However, the photoelectric conversion efficiency of QDSSCs is still lower than the DSSCs because of the severe recombination of electrons of quantum dots conduction band. In order to improve the photoelectric conversion efficiency of QDSSCs, impurity element Mn2+is doped into the precursor solution of cadmium sulfide (CdS). By optimizing the experimental parameters, the photoelectric conversion efficiency of QDSSCs can be greatly improved. For the deposition of a fixed number of six times, the photoelectric conversion efficiency shows the maximum value (1.51%) at the doped ratio of 1 : 10.

Dye-Sensitized Solar Cells Based on Three-Dimensional Web-Like Structure Anodes

2012 ◽  
Vol 629 ◽  
pp. 332-338 ◽  
Author(s):  
Zhi Hua Tian ◽  
Jian Xi Yao ◽  
Mi Na Guli
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Three Dimensional ◽  
Precursor Solution ◽  
Photoelectric Conversion Efficiency ◽  
Tio2 Films ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

TiO2 films with three-dimensional web-like structure have been prepared by the photo polymerization-induced phase separation method (PIPS). Scanning electron microscopy and X-ray diffraction were used to characterize the as-prepared TiO2 films. The results showed that the film texture could be tuned by changing the composition of the precursor solution. The TiO2 film with web-like structure exhibited high photocatalytic activity for the degradation of methylene blue (MB) dye. The as-prepared films were used as the photo-anodes in dye-sensitized solar cells (DSCs). The photoelectric conversion efficiency of the DSCs was significantly enhanced by changing the POGTA/TTB in the precursor solution. Because of the increased dye adsorption active sites and efficient electron transport in the TiO2 anode film, a photoelectric conversion efficiency of 3.015% was obtained.

H3PW12O40/Co3O4–Cu2S as a low-cost counter electrode catalyst for quantum dot-sensitized solar cells

2020 ◽  
Vol 44 (26) ◽  
pp. 11042-11048
Author(s):  
Yi Yang ◽  
Qiu Zhang ◽  
Fengyan Li ◽  
Zhinan Xia ◽  
Lin Xu
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Composite Film ◽  
Conversion Efficiency ◽  
Counter Electrode ◽  
Low Cost ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Electrocatalytic Performance ◽  
Sensitized Solar Cells

The PW12/Co3O4–Cu2S composite film shows excellent electrocatalytic performance and achieves a high photoelectric conversion efficiency of 4.67%, which is 46%, 55.6%, and 72%, respectively, higher than those of Cu2S, PW12/Co3O4 and Co3O4 CEs.

scholarly journals Effects of Different Doping Ratio of Cu Doped CdS on QDSCs Performance

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Xiaojun Zhu ◽  
Xiaoping Zou ◽  
Hongquan Zhou
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Sensitized Solar Cells ◽  
Doping Ratio

We use the successive ionic layer adsorption and reaction (SILAR) method for the preparation of quantum dot sensitized solar cells, to improve the performance of solar cells by doping quantum dots. We tested the UV-Vis absorption spectrum of undoped CdS QDSCs and Cu doped CdS QDSCs with different doping ratios. The doping ratios of copper were 1 : 100, 1 : 500, and 1 : 1000, respectively. The experimental results show that, under the same SILAR cycle number, Cu doped CdS quantum dot sensitized solar cells have higher open circuit voltage, short circuit current density photoelectric conversion efficiency than undoped CdS quantum dots sensitized solar cells. Refinement of Cu doping ratio are 1 : 10, 1 : 100, 1 : 200, 1 : 500, and 1 : 1000. When the proportion of Cu and CdS is 1 : 10, all the parameters of the QDSCs reach the minimum value, and, with the decrease of the proportion, the short circuit current density, open circuit voltage, and the photoelectric conversion efficiency are all increased. When proportion is 1 : 500, all parameters reach the maximum values. While with further reduction of the doping ratio of Cu, the parameters of QDSCs have a decline tendency. The results showed that, in a certain range, the lower the doping ratio of Cu, the better the performance of quantum dot sensitized solar cell.

Indirect Preparation of Titanium Dioxide Oxidation Plating Layer as Photoelectrode Used in Dye-Sensitized Solar Cells

2014 ◽  
Vol 953-954 ◽  
pp. 1095-1098 ◽  
Author(s):  
Jun Zhang ◽  
Ya Han Wu ◽  
Fang Xue ◽  
Meng Jun Yuan ◽  
Yan Huo ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Great Influence ◽  
Photoelectric Conversion Efficiency ◽  
Titanium Coating ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The structural morphology, arrangement of the nanocrystalline particles, porosity factor, surface state, crystalline phase and specific area of photoelectrode film have great influence on photoelectric performance of dye sensitized solar cells (DSSCs). At present, using TiO2 as the photoelectrode in the DSSC material has achieved very good photoelectric conversion efficiency. In this paper, the plating method is adopted to directly deposited the titanium coating on the conductive glass substrate, oxidizing the surface of titanium film, so that it is generated on the surface of titanium dioxide oxidation layer. Making it as the DSSC photoelectrode, obtained relative high photoelectric conversion efficiency.

Solar Cells of the Inorganic Materials based on PbSe/CdSe Core/Shell Nanocrystals

2015 ◽  
Vol 737 ◽  
pp. 119-122 ◽  
Author(s):  
Tong Yu Wang ◽  
Peng Wang ◽  
He Lin Wang ◽  
Tie Qiang Zhang
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Conversion Efficiency ◽  
Inorganic Materials ◽  
Photoelectric Conversion Efficiency ◽  
Core Shell ◽  
Cdse Core ◽  
Photoelectric Conversion ◽  
Quantum Dot Solar Cells ◽  
The Stability

This essay employed the "successive ion layer adsorption and reaction (SILAR)"technology to form PbSe/CdSe core/shell.We use the Pbse/CdSe core/shell replaced PbSe nanocrystals and obtained one new quantum dot solar cells of the inorganic.This new solar cells constituted by the metal oxide films retain the photoelectric conversion efficiency of quantum dot solar cells.At the same time,the stability of the new solar cells is tremendously improved with the oxidation resistance of inorganic oxide.Finally,when Jsc=25.2mA/cm2and Voc=0.36V ,we can conclude the conversion efficiency of the solar cell can be evaluated as 3.929%.

Effects of triphenyl phosphate as an inexpensive additive on the photovoltaic performance of dye-sensitized nanocrystalline TiO2 solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50483-50493 ◽  
Author(s):  
Malihe Afrooz ◽  
Hossein Dehghani
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Triphenyl Phosphate ◽  
Photoelectric Conversion ◽  
Nanocrystalline Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this study, triphenyl phosphate (TPP) is applied as an effective and inexpensive additive in the dye sensitized solar cells (DSSCs) and an increase in the photoelectric conversion efficiency is obtained of almost 24%.

scholarly journals Triazoloisoquinoline-Based/Ruthenium-Hybrid Sensitizer for Efficient Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Che-Lung Lee ◽  
Wen-Hsi Lee ◽  
Cheng-Hsien Yang
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Ruthenium Complex ◽  
Molecular Layer ◽  
Dye Sensitized Solar Cells ◽  
Visible Spectrum ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49%. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350–500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23% to 7.84%, and the overall conversion efficiency increased by about 26%. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.

scholarly journals Efficient passivated phthalocyanine-quantum dot solar cells

2015 ◽  
Vol 51 (9) ◽  
pp. 1732-1735 ◽  
Author(s):  
Vicente M. Blas-Ferrando ◽  
Javier Ortiz ◽  
Victoria González-Pedro ◽  
Rafael S. Sánchez ◽  
Iván Mora-Seró ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Quantum Dot Solar Cells ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells

The power conversion efficiency of CdSe and CdS quantum dot sensitized solar cells is enhanced up to 45% for CdSe and 104% for CdS by passivation with an asymmetrically disulfide substituted phthalocyanine.

Application of ZnO Nanostructure by Hydrothermal Growth in Quantum Dot Sensitized Solar Cells

2014 ◽  
Vol 875-877 ◽  
pp. 1904-1907
Author(s):  
Bao Li Zhang ◽  
X.P. Zou ◽  
X.M. Lv ◽  
G.Q. Yang ◽  
C.L. Wei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Short Circuit ◽  
Hydrothermal Growth ◽  
Photoelectric Conversion Efficiency ◽  
Flower Structure ◽  
Photoelectric Conversion ◽  
Nanostructure Materials ◽  
Zno Nanostructure ◽  
Sensitized Solar Cells

In this paper, we mainly talk about two kinds of ZnO nanostructure materials which are rod and flower structure by hydrothermal growth as photoanode of quantum dot sensitized solar cells (QDSSCs). Using chemical bath deposition to assemble CdS quantum dots onto ZnO nanostructure materials, and after different CBD cycles we could get the cell parameters of different CBD cycles respectively in their I-V curves, from which we could see it is the flower structure that has the highest efficiency which is 0.346% after 9 CBD cycles and the short-circuit current is 2.88 mA/cm2. Therefore, we could see that ZnO flower structure has a potential application in solar cell devices as the photoelectrode to gain higher photoelectric conversion efficiency (PCE).

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