Preparation and Photoelectric Properties of Spinel MCr2O4 (M = Cu, Ni) Nanopowders

2011 ◽  
Vol 415-417 ◽  
pp. 1594-1598
Author(s):  
Zhi Qiang Hu ◽  
Ying Qin ◽  
Xian Qing Liu ◽  
Shang Ru Zhai ◽  
Hong Gao
Keyword(s):  
Composite Film ◽  
Conversion Efficiency ◽  
Composite Electrode ◽  
Diffuse Reflectance Spectrum ◽  
Aqueous System ◽  
Photoelectric Conversion Efficiency ◽  
Film Electrode ◽  
Photoelectric Conversion ◽  
Photoelectric Properties ◽  
Co Precipitation

Spinel MCr2O4(M = Cu, Ni) nanopowders were synthesized by co-precipitation technique from alcohol-aqueous system and the performance of MCr2O4/TiO2 composite film electrodes was studied. The synthesized MCr2O4 nanopowders were characterized by X-ray diffraction (XRD) and UV-vis diffuse reflectance spectrum (UV-vis). The MCr2O4 nanopowders were doped into nanocrystalline semiconductor oxide film electrode of DSSCs and the influence of doping content was investigated. Compared with the pure TiO2 film electrode, the absorbance of different MCr2O4/TiO2 composite film electrode increased significantly. Furthermore, the light respondence of CuCr2O4/TiO2 composite electrode was better than NiCr2O4/TiO2 composite electrode. When the content of CuCr2O4 2%, the photoelectric conversion efficiency increased by 54%, and doping 1% NiCr2O4 nanopowders, the photoelectric conversion efficiency was improved 30%.

Effect of Cu(Cr0.2Al0.8)2O4/TiO2 Composite Film Electrodes on DSSC Photoelectric Properties

2013 ◽  
Vol 275-277 ◽  
pp. 1683-1687
Author(s):  
Feng Xia Zhou ◽  
Yan Yan Jiang ◽  
Ji Wen Zhang ◽  
Jing Xiao Liu ◽  
Gui Shan Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Composite Film ◽  
Conversion Efficiency ◽  
Diffuse Reflectance Spectrum ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Nano Particles ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Photoelectric Properties

Cu(Cr0.2Al0.8)2O4/TiO2composite film electrodes were prepared on FTO glass substrate by screen printing method after Cu(Cr0.2Al0.8)2O4nano-particles were doped in TiO2powers. The characteristics were studied by the X-ray diffraction for the crystalline structure of composite films, UV-Vis diffuse reflectance spectrum instruction for absorption spectrum of composite films and dye sensitized solar cells tester for the performance of DSSC. The results show doping Cu(Cr0.2Al0.8)2O4powers could enhance UV-Vis spectral absorption strength and improve the photoelectric conversion efficiency of the solar cells when the doping content of Cu(Cr0.2Al0.8)2O4is 3％. Compared with pure TiO2film electrodes, the photoelectric conversion efficiency of the solar cells reaches to 3.59％.

Photoelectric efficiency enhancement of a polycrystalline silicon solar cell coated with an EVA film containing Eu3+ complex by addition of modified SiO2

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110409-110415 ◽  
Author(s):  
Jin Dong ◽  
Baoping Lin
Keyword(s):  
Solar Cell ◽  
Composite Film ◽  
Conversion Efficiency ◽  
Polycrystalline Silicon ◽  
Silicon Solar Cell ◽  
Photoelectric Conversion Efficiency ◽  
Efficiency Enhancement ◽  
Photoelectric Conversion

Modified SiO2 was doped into an EVA film containing a Eu3+ complex and the results show that the fluorescence of the EVA composite film increased, which helped to improve the photoelectric conversion efficiency of the solar cell.

scholarly journals Ag-Doped TiO2Nanotube Arrays Composite Film as a Photoanode for Enhancing the Photoelectric Conversion Efficiency in DSSCs

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Jinghua Hu ◽  
Jiejie Cheng ◽  
Shengqiang Tong ◽  
Yingping Yang ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Composite Film ◽  
Conversion Efficiency ◽  
Ag Nanoparticles ◽  
Doping Concentration ◽  
Cluster Structure ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Photocatalytic Ability

A Ag-doped double-layer composite film with TiO2nanoparticles (P25) as the underlayer and TiO2nanotube (TNT) arrays with the Ag-doped nanoparticles as the overlayer was fabricated as the photoanode in dye-sensitized solar cells (DSSCs). Five different concentrations of Ag-doped TNT arrays photoelectrode were compared with the pure TNT arrays composite photoelectrode. It is found that the photoelectric conversion efficiency of the TNT arrays composite photoanode is gradually improved from 3.00% of the pure TNT arrays composite photoanode to 6.12% of the Ag-doped TNT arrays photoanode with the increasing of the doping concentration, reaching up to the maximum in the 0.04 mol/L AgNO3solution, and then slightly decreased to 5.43% after continuing to increase the doping concentration. The reason is mainly that the cluster structure of the Ag nanoparticles with large surface area contributes to dye adsorption and the Surface Plasmon Resonance Effect of the Ag nanoparticles improved the photocatalytic ability of the TNT arrays film.

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.

Preparation And Photoelectric Properties Of CuCr2O4 Nanopowders

2011 ◽  
Vol 284-286 ◽  
pp. 974-979 ◽  
Author(s):  
Zhi Qiang Hu ◽  
Ying Qin ◽  
Hong Ru Zhou ◽  
Jiao Kang ◽  
Shang Ru Zhai ◽  
...  
Keyword(s):  
Diffuse Reflectance Spectrum ◽  
Dye Sensitized Solar Cells ◽  
Aqueous System ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Dye Sensitized ◽  
Photoelectric Properties ◽  
Co Precipitation ◽  
Sensitized Solar Cells ◽  
High Absorption

CuCr2O4nanopowders were successfully prepared by co-precipitation technique from alcohol-aqueous system and applied for photo-anodes of dye-sensitized solar cells (DSSCs). The synthesized CuCr2O4particles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis diffuse reflectance spectrum (UV-vis) and thermo-gravimetric/differential Scanning Calorimetry (TG-DSC). It was shown that, with the sintering temperature of 1000 °C and the amount of PEG-400 of 1.5 wt % , the size of primary crystal grain was about 48 nm. The CuCr2O4/TiO2composite exhibit high absorption ability in the spectral range 600 ~ 900 nm, which leading to a much higher conversion efficiency (η) of the solar cell in comparison with the pure TiO2film electrode.

Interfacial self-assembly engineering for constructing a 2D flexible superlattice polyoxometalate/rGO heterojunction for high-performance photovoltaic devices

2020 ◽  
Vol 49 (12) ◽  
pp. 3766-3774 ◽  
Author(s):  
Jianping Li ◽  
Dai Wu ◽  
Chunlei Wang ◽  
Ding Liu ◽  
Weilin Chen ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Self Assembly ◽  
High Performance ◽  
Photoelectric Conversion Efficiency ◽  
Photovoltaic Devices ◽  
Photoelectric Conversion

The strategy of constructing a 2D flexible superlattice polyoxometalate/rGO heterojunction is proposed to improve the photoelectric conversion efficiency of photovoltaic devices.

scholarly journals Effect of Core-Shell Ag@TiO2Volume Ratio on Characteristics of TiO2-Based DSSCs

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Ho Chang ◽  
Chih-Hao Chen ◽  
Mu-Jung Kao ◽  
Hsin-Han Hsiao
Keyword(s):  
Conversion Efficiency ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Core Shell ◽  
Photoelectric Conversion ◽  
Shell Type ◽  
Degussa P25 ◽  
Triton X

This paper aims to develop photoanode material required by dye-sensitized solar cells. The material prepared is in the form of Ag@TiO2core-shell-type nanocomposites. This material is used to replace the titanium oxide powder commonly used in general DSSCs. The prepared Ag@TiO2core-shell-type nanocomposites are mixed with Degussa P25 TiO2in different proportions. Triton X-100 is added and polyethylene glycol (PEG) at 20 wt% is used as a polymer additive. This study tests the particle size and material properties of Ag@TiO2core-shell-type nanocomposites and measures the photoelectric conversion efficiency and IPCE of DSSCs. Experimental results show that the DSSC prepared by Ag@TiO2core-shell-type nanocomposites can achieve a photoelectric conversion efficiency of 3.67%. When Ag@TiO2core-shell-type nanocomposites are mixed with P25 nanoparticles in specific proportions, and when the thickness of the photoelectrode thin film is 28 μm, the photoelectric conversion efficiency can reach 6.06%, with a fill factor of 0.52, open-circuit voltage of 0.64V, and short-circuit density of 18.22 mAcm−2. Compared to the DSSC prepared by P25 TiO2only, the photoelectric conversion efficiency can be raised by 38% under the proposed approach.

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