Achieving 12.8% Efficiency by Simultaneously Improving Open-Circuit Voltage and Short-Circuit Current Density in Tandem Organic Solar Cells

Good light harvesting properties and matched energy levels as well as enhanced Jsc value and high Voc value in solar cells were achieved simultaneously by construction of the D–A–π–A type regular terpolymers of PIDT-DTQ-TT, finally leading to the maximum PCE value of 6.63% in PSCs.

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Approach to tune short-circuit current and open-circuit voltage of dye-sensitized solar cells: π-linker modification and photoanode selection

RSC Advances ◽

10.1039/c4ra07967a ◽

2014 ◽

Vol 4 (80) ◽

pp. 42252-42259 ◽

Cited By ~ 13

Author(s):

Shengbo Zhu ◽

Zhongwei An ◽

Xinbing Chen ◽

Pei Chen ◽

Qianfeng Liu

Keyword(s):

Solar Cells ◽

Current Density ◽

Open Circuit Voltage ◽

Short Circuit ◽

Dye Sensitized Solar Cells ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Dye Sensitized ◽

Sensitized Solar Cells

The modification of the π-linker of cyclic thiourea functionalized dyes has a significant effect on the short-circuit current density and open-circuit voltage of dye-sensitized solar cells.

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Porous Silicon Antireflection Coating for Solar Cells Using Chemical Etching in HF-FeCl3-H2O

International Journal of Engineering Research in Africa ◽

10.4028/www.scientific.net/jera.22.1 ◽

2016 ◽

Vol 22 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Rachid Chaoui ◽

Bedra Mahmoudi ◽

Yasmine Si Ahmed

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Current Density ◽

Open Circuit Voltage ◽

Short Circuit ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Relative Improvement ◽

Cell Conversion

Stain etching of silicon solar cells in HF-FeCl3-H2O solutions as a last step in the processing sequence is reported. The etching was carried out without protecting the screen printed contacts. Following optimization of the solution composition and using very short etching times to alleviate the contact degradation problem, the solar cell weighted reflectance (Rw) between 400 and 1100 nm could be reduced from 38.23% to 11.54%. For the best small area cell (~20 cm2), the PS antireflective layer led to a relative improvement of 62.74% in the short-circuit current density, the FF was enhanced by 5.5% absolute, the open-circuit voltage was increased by 1.2 mV and the cell conversion efficiency was raised by 4.1% absolute from 5.4% to 9.5%. The best large area cell (~78 cm2) shows the following changes after porous layer formation: a relative improvement of 45.43% in the short-circuit current density, an improvement in the FF of 7.4% absolute, an increase in the open-circuit voltage by 7.5 mV and an enhancement in the cell efficiency by 4.0% absolute from 6.2% to 10.2%. This method shows a great potential for the cost-effective reduction of reflectance losses in industrial silicon solar cell manufacturing.

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IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS

Jurnal Teknologi ◽

10.11113/jt.v80.10258 ◽

2017 ◽

Vol 80 (1) ◽

Cited By ~ 1

Author(s):

Zainal Arifin ◽

Sudjito Soeparman ◽

Denny Widhiyanuriyawan ◽

Suyitno Suyitno ◽

Argatya Tara Setyaji

Keyword(s):

Current Density ◽

Open Circuit Voltage ◽

Short Circuit ◽

Dye Sensitized Solar Cells ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Natural Dyes ◽

Dye Sensitized ◽

Sensitized Solar Cells

Natural dyes have attracted much researcher’s attention due to their low-cost production, simple synthesis processes and high natural abundance. However the dye-sensitized solar cells (DSSCs) based natural dyes have higher tendency to degradation. This article reports on the enhancement of performance and stability of dye-sensitized solar cells (DSSCs) using natural dyes. The natural dyes were extracted from papaya leaves by ethanol solvent at a temperature of 50 °C. Then the extracted dyes were isolated and modified into Mg-chlorophyll using column chromatography. Mg-chlorophyll was then synthesized into Fe-chlorophyll to improve stability. The natural dyes were characterized using ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and cyclic voltammetry. The performance of DSSCs was tested using a solar simulator. The results showed the open-circuit voltage, the short-circuit current density, and the efficiency of the extracted papaya leaves-based DSSCs to be 325 mV, 0.36 mA/cm2, and 0.07%, respectively. Furthermore, the DSSCs with purified chlorophyll provide high open-circuit voltage of 425 mV and short-circuit current density of 0.45 mA/cm2. The use of Fe-chlorophyll for sensitizing the DSSCs increases the efficiency up to 2.5 times and the stability up to two times. The DSSCs with Fe-chlorophyll dyes provide open-circuit voltage, short-circuit current density, and efficiency of 500 mV, 0.62 mA/cm2, and 0.16%, respectively. Further studies to improve the current density and stability of natural dye-based DSSCs along with an improvement in the anchor between dyes and semiconducting layers are required.

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SCAPS Simulation on P3HT:Graphene Nanocomposites Based Bulk-Heterojunction Organic Solar Cells

International Journal of Electrical & Electronic Systems Research (IEESR) ◽

10.24191/ieesr.v9i1.950 ◽

2019 ◽

Vol 9 (1) ◽

pp. 28

Author(s):

Nur Shakina Mohd Shariff ◽

Puteri Sarah Mohamad Saad ◽

Mohamad Rusop Mahmood

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Fill Factor ◽

Bulk Heterojunction ◽

Short Circuit ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Simulation Software ◽

Capacitance Voltage

There has been an increasing interest towards organic solar cells after the discovery of conjugated polymer and bulk-heterojunction concept. Eventhough organic solar cells are less expensive than inorganic solar cells but the power conversion energy is still considered low. The main objective of this research is to investigate the effect of the P3HT’s thickness and concentration towards the efficiency of the P3HT:Graphene solar cells. A simulation software that is specialize for photovoltaic called SCAPS is used in this research to simulate the effect on the solar cells. The solar cell’s structure will be drawn inside the simulation and the parameters for each layers is inserted. The result such as the open circuit voltage (Voc), short circuit current density (Jsc), fill factor (FF), efficiency (η), capacitance-voltage (C-V) and capacitance-frequency (C-f) characteristic will be calculated by the software and all the results will be put into one graph.

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An asymmetric small molecule acceptor for organic solar cells with a short circuit current density over 24 mA cm−2

Journal of Materials Chemistry A ◽

10.1039/d0ta01636e ◽

2020 ◽

Vol 8 (31) ◽

pp. 15984-15991 ◽

Cited By ~ 4

Author(s):

Fangfang Cai ◽

Hongjian Peng ◽

Honggang Chen ◽

Jun Yuan ◽

Jiefeng Hai ◽

...

Keyword(s):

Solar Cells ◽

Small Molecule ◽

Current Density ◽

Organic Solar Cells ◽

Short Circuit ◽

Short Circuit Current ◽

Short Circuit Current Density

Acceptor Y22 with an asymmetric hexacyclic A–DA′D–A structure achieved a high PCE of 15.4% and a high Jsc of 24.37 mA cm−2, which are among the best values reported for asymmetric acceptor based binary organic solar cells.

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