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

2017 ◽  
Vol 80 (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.

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

RSC Advances ◽  
2014 ◽  
Vol 4 (80) ◽  
pp. 42252-42259 ◽  
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.

scholarly journals Delineating the enhanced efficiency of carbon nanomaterials including the hierarchical architecture of the photoanode of dye-sensitized solar cells

2020 ◽  
Vol 1 (8) ◽  
pp. 2964-2970
Author(s):  
Venkatesan Srinivasan ◽  
Jagadeeswari Sivanadanam ◽  
Kothandaraman Ramanujam ◽  
Mariadoss Asha Jhonsi
Keyword(s):  
Current Density ◽  
Carbon Nanomaterials ◽  
Short Circuit ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Hierarchical Architecture ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The inclusion of CNMs together with TiO2 enhanced the short circuit current density by 31% and power conversion efficiency (PCE) by 46% compared to the CNM-free DSSCs.

Inkjet Printing Technology for Dye-Sensitized Solar Cells

2012 ◽  
Vol 476-478 ◽  
pp. 1767-1770
Author(s):  
Yu Li Lin ◽  
Cheng Yi Hsu ◽  
Chang Lun Tai
Keyword(s):  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Tio2 Particles ◽  
Ito Glass ◽  
Sensitized Solar Cells ◽  
Pet Substrate

The task of this study is to prepare the TiO2 film electrode for dye-sensitized solar cells (DSSC) on ITO PET substrate using a general jet-printer. The results were compared with that obtained using ITO glass substrate. In this study, the dispersion of TiO2 slurry was manipulated by changing the pH value of the solution to avoid agglomeration of TiO2 particles. The average TiO2 particles used in this study were measured about 130nm. The experimental results show that it has the best performance when the thickness of the TiO2 film was about 10μm. In ITO glass substrate, the measured short circuit current was about 5.03mA, the open circuit voltage was measured to be 0.65V. In ITO-PET substrate, the measured short circuit current was about 2.73mA, the open circuit voltage was measured to be 0.68V.

scholarly journals Impedance Spectroscopic Investigation of the Degraded Dye-Sensitized Solar Cell due to Ageing

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Parth Bhatt ◽  
Kavita Pandey ◽  
Pankaj Yadav ◽  
Brijesh Tripathi ◽  
Manoj Kumar
Keyword(s):  
Current Density ◽  
Open Circuit Voltage ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Electrical Characterization ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Conduction Band Edge ◽  
Dye Sensitized

This paper investigates the effect of ageing on the performance of dye-sensitized solar cells (DSCs). The electrical characterization of fresh and degraded DSCs is done under AM1.5G spectrum and the current density-voltage (J-V) characteristics are analyzed. Short circuit current density (JSC) decreases significantly whereas a noticeable increase in open circuit voltage is observed. These results have been further investigated electroanalytically using electrochemical impedance spectroscopy (EIS). An increase in net resistance results in a lower JSC for the degraded DSC. This decrease in current is mainly due to degradation of TiO2-dye interface, which is observed from light and dark J-V characteristics and is further confirmed by EIS measurements. A reduction in the chemical capacitance of the degraded DSC is observed, which is responsible for the shifting of Fermi level with respect to conduction band edge that further results in an increase of open circuit voltage for the degraded DSC. It is also confirmed from EIS that the degradation leads to a better contact formation between the electrolyte and Pt electrode, which improves the fill factor of the DSC. But the recombination throughout the DSC is found to increase along with degradation. This study suggests that the DSC should be used under low illumination conditions and around room temperature for a longer life.

Synthesis and Dye-sensitized Solar Cell Application of Polyolefinic Aromatic Molecules with Pyrene as Surface Group

2011 ◽  
Vol 64 (7) ◽  
pp. 951 ◽  
Author(s):  
Perumal Rajakumar ◽  
Kathiresan Visalakshi ◽  
Shanmugam Ganesan ◽  
Pichai Maruthamuthu ◽  
Samuel Austin Suthanthiraraj
Keyword(s):  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Surface Group ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Solar Cell Application ◽  
Aromatic Molecules ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Synthesis of polyolefinic aromatic molecules with pyrene as the surface group, and their role as an additive in the redox couple of dye-sensitized solar cells, is described. The studies yield a promising power conversion efficiency of 5.27% with a short circuit current density of 6.50 mA cm–2, an open circuit voltage of 0.60 V, and a fill factor of 0.54 under 40 mW cm–2 simulated air mass (A.M.) 1.5 illumination. Most importantly, the photocurrent responsivity increases with an increase in the number of pyrene units on the surface.

Study of Dye-Sensitized Solar Cells with Nanostructure Inn Compact Layer and Au Nano Particles

2011 ◽  
Vol 378-379 ◽  
pp. 636-641
Author(s):  
Cheng Chiang Chen ◽  
Lung Chien Chen ◽  
Shu Jung Kuo
Keyword(s):  
Current Density ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Nano Particles ◽  
Compact Layer ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Au Nano Particles

This study examined the nanostructure InN compact layer and Au nano particles to dye-sensitized solar cells (DSSCs).We presents the DSSCs with Nitrided indium compact layer (InN-CPL) prepared by radiofrequency magnetron sputtering and doping Au particle in photoelectrode. The InN-CPL effectively reduces the back reaction in the interface between the indium tin oxide (ITO) transparent conductive film and the electrolyte in the DSSC. The Au particles effect conduction band of the TiO2 to rise open-circuit voltage to 0.7 v. The Au particles effectively rise inject electrons efficiency. For the DSSC without InN-CPL, the short-circuit current density and solar energy conversion efficiency are 15.6 mA/cm2 and 6.35 %, respectively. However, DSSCs with InN-CPL effectively rise short-circuit current density. The DSSC fabricated on 90 nm InN-CPL and doping Au particle showed the maximum power conversion efficiency of 8.9 % (AM1.5G) due to effective prevention of the electron transfer to electrolyte.

Fabrication of a Dye Sensitized Solar Cell and Its Performance Dependence on Temperature and Irradiance

2011 ◽  
Author(s):  
Edwin Peng ◽  
Halil Berberoglu
Keyword(s):  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Current Voltage ◽  
Nanocrystalline Titanium ◽  
Increasing Temperature ◽  
Sensitized Solar Cells

This paper reports the temperature and irradiance dependence of dye-sensitized solar cells (DSSCs) with acetonitrile-based electrolytes. The prototyped DSSCs had nanocrystalline titanium dioxide photoanodes and platinum thin film cathode. The photoanodes were sensitized with N-749 dye. The current-voltage characteristics of the DSSCs were measured at temperatures from 5 to 50 °C and under 500, 1000, and 1500 W m−2 irradiance. The open circuit voltage, VOC, decreased linearly with increasing temperature and had positive, logarithmic relation with irradiance. At temperatures lower than 15 °C, short circuit current density, JSC, was limited by the diffusion of I3− in the electrolyte and increased with increasing temperature. At higher temperatures the recombination of electrons injected into the TiO2 conduction band was dominant over diffusion and JSC decreased with increasing temperature. Moreover, JSC increaed linearly with increasing irradiance. The DSSC photoconversion efficiency did not vary appreciably at temperatures lower than 15 °C but decreased with increasing temperature. Finally, the efficiency increased with increasing irradiance.

scholarly journals Performance Degradation of Dye-Sensitized Solar Cells Induced by Electrolytes

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Ru-Yuan Yang ◽  
Huang-Yu Chen ◽  
Fu-Der Lai
Keyword(s):  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Sensitized Solar Cells ◽  
Open Circuit Photovoltage

We investigated the change of the electric characteristics in dye-sensitized solar cell (DSSC) when the electrolyte has been injected and measured initially and lately for a period of time. It was found that the short-circuit current density decreased from 9.799 mA/cm2to 7.056 mA/cm2and the fill factor increased from 0.406 to 0.559 when the cell had stood for an hour, while the open-circuit photovoltage did not change due to fixed difference between the Fermi level of TiO2and the oxidation-reduction potential of electrolyte. The results can be explained by using the variation of the series resistance in the equivalent circuit of the DSSC.

Sign in / Sign up

Export Citation Format

Share Document