A stoichiometric CdS interlayer for the photovoltaic performance enhancement of quantum-dot sensitized solar cells

2019 ◽  
Vol 21 (7) ◽  
pp. 3970-3975 ◽  
Author(s):  
Shixin Chen ◽  
Yinglin Wang ◽  
Shuang Lu ◽  
Yichun Liu ◽  
Xintong Zhang
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Performance Enhancement ◽  
Sol Gel ◽  
Photovoltaic Performance ◽  
Stoichiometric Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sensitized Solar Cells

We employed a sol–gel method to prepare a CdS interlayer (CdS-SG) with a stoichiometric ratio and then fabricated QDSCs.

Charge generation performance enhancement by size-dependent Cu2GeSe3quantum dot-sensitized solar cells

2019 ◽  
Vol 12 (01) ◽  
pp. 1850090
Author(s):  
Zhou Liu ◽  
Zhuoyin Peng ◽  
Jianlin Chen ◽  
Wei Li ◽  
Jian Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Conversion Efficiency ◽  
Performance Enhancement ◽  
Photovoltaic Performance ◽  
Charge Generation ◽  
Transfer Property ◽  
Photon Conversion ◽  
Sensitized Solar Cells

Cu2GeSe3 quantum dot is introduced to instead of non-toxic CuInSe2 as a sensitizer for solar cells, which is employed to enhance the photovoltaic performance. Cu2GeSe3 quantum dots with various sizes are prepared by thermolysis process, which are employed for the fabrication of quantum dot-sensitized solar cells (QDSSC) according to assembly linking process. The optical absorption properties of the Cu2GeSe3 quantum dot-sensitized photo-electrodes have been obviously enhanced by the size optimization of quantum dots, which are better than that of CuInSe2-based photo-electrodes. Due to the balance on the deposition quantity and charge transfer property of the quantum dots, 3.9[Formula: see text]nm-sized Cu2GeSe3 QDSSC exhibits the highest current density value and incident photon conversion efficiency response, which result in a higher photovoltaic conversion efficiency than that of CuInSe2 QDSSC. The modulation of Cu2GeSe3 QDs will further improve the performance of photovoltaic devices.

scholarly journals A New Organic Dye Cordia sebestena Sensitized Solar Cell with Current-Voltage Characteristics

2019 ◽  
Vol 32 (2) ◽  
pp. 342-348
Author(s):  
M. Rekha ◽  
M. Kowsalya
Keyword(s):  
Solar Cells ◽  
Density Functional ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Natural Dye ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Morphological Studies ◽  
Sensitized Solar Cells

Titanium dioxide nanoparticles have been synthesized by a novel modified sol-gel for the fabrication of natural dye sensitized solar cells. The natural photo sensitizer extracted from Cordia sebestena flower was mixed with the precursor solution. The flower dye has put the effort of a surfactant which has resulted colourized TiO2 instead of white TiO2. Whencompared to the conventional sol-gel method, this modified process has enhanced the properties of TiO2 like, morphology, uniformity in dye absorption. It has reduced the agglomeration of TiO2 and dye aggregation significantly. The optimized molecular geometry of sebestenoid D, the major pigment of Cordia sebestena and HOMO-LUMO plot are found using density functional theory. The TiO2 nanoparticles were subjected to structural, optical, spectral and morphological studies which showed improved properties in modified sol-gel process. Ecofriendly and low-cost natural dye sensitized solar cells (DSSC) were fabricated using conventional and pre-dye treated TiO2 sensitized by Cordia sebestena flower extract. The I-V studies showed the solar light photon to electron conversion efficiencies of 0.87 and 1.28 % for sol-gel and modified sol-gel methods, respectively. There has been an enhancement in efficiency by 47 % in modified sol-gel method which is very much promising in terms of efficiency for natural dye sensitized solar cells.

A novel counter electrode material of La0.5Sr0.5CoO3 for dye-sensitized solar cells

2016 ◽  
Vol 09 (01) ◽  
pp. 1650007 ◽  
Author(s):  
Yongfeng Zhong ◽  
Tianze Qin ◽  
Bo Yang ◽  
Xueqin Zuo ◽  
Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Perovskite Oxide ◽  
Counter Electrodes ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this work, La0.5Sr0.5CoO3 (LSCO) perovskite oxide with perfect crystallinity was successfully synthesized via a sol–gel method and then used as counter electrodes (CEs) for dye-sensitized solar cells (DSSCs). The DSSCs with LSCO CEs exhibited excellent electrocatalytic activity for the triiodide reduction and yielded a power conversion efficiency of 7.17%, which is greater than that of the Pt electrode (7.06%). Compared with the hydrothermal method and solvothermal method, sol–gel method is more suitable for large scale preparation. This work should open up a new class of CE materials for low-cost and high-efficiency DSSCs.

Synthesis of self-light-scattering wrinkle structured ZnO photoanode by sol–gel method for dye-sensitized solar cells

2013 ◽  
Vol 116 (2) ◽  
pp. 811-816 ◽  
Author(s):  
C. Justin Raj ◽  
S. N. Karthick ◽  
K. V. Hemalatha ◽  
Soo-Kyoung Kim ◽  
Byung Chul Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Optimization of Dye-sensitized Solar Cells Prepared by Pechini Sol-Gel Method

2016 ◽  
Vol 31 (7) ◽  
pp. 739
Author(s):  
YIN Yue-Feng ◽  
LIANG Gui-Jie ◽  
ZHANG Qiang ◽  
PAN Zheng ◽  
LI Wang-Nan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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