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 ◽  
...  

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

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60773-60779 ◽  
Author(s):  
Yu Wu ◽  
Jun-Xiang Zhang ◽  
Xiao-Xia Feng ◽  
Jia-Cheng Liu ◽  
Ren-Zhi Li ◽  
...  

Novel horizontal anchor zinc porphyrin assemblies via zinc-to-ligand axial coordination approach immobilized on TiO2 electrode surface have been impressive increased photoelectric conversion efficiency in supramolecular solar cell.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Ho Chang ◽  
Chih-Hao Chen ◽  
Mu-Jung Kao ◽  
Hsin-Han Hsiao

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.


2011 ◽  
Vol 216 ◽  
pp. 355-359 ◽  
Author(s):  
Hui Zhong ◽  
Yong Yi Gao ◽  
Ren Long Zhou ◽  
Bing Ju Zhou ◽  
Li Qiang Tang ◽  
...  

The effect of grating structure on the photoelectric conversion efficiency of solar cells is studied with the finite-difference time-domain method. The influence of grating shape, height and the thickness of coated metal film is analysed. It is found that the variation of grating shape and height makes great changes of energy storage, especially of the photoelectric conversion efficiency and energy storage of the triangle grating. The comparison between un-optimized and optimized surface grating structure on solar cells shows that the optimized grating surface significantly increases the energy storage capability and greatly improves the efficiency.


2011 ◽  
Vol 121-126 ◽  
pp. 4229-4233
Author(s):  
Ping Chuan Zhang ◽  
Yun Long Kong ◽  
Hang Sen Zhang

This paper design an intelligent photovoltaic cell test system. The high performance dual-core 16bits SPCE061A microprocessors are used as control and data processing center. The powerful data operation ability of SPCE061A makes it to carry out software filter for measured data and enhances testing precision. the experiments demonstrated the test system can measure the characteristic parameters of photovoltaic cells: open voltage, current, the fill factor and photoelectric conversion efficiency, draw photovoltaic cells I-V curve, find the best working points , and also have the characteristics of miniaturization and intelligent.


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