Preparation by Hydrothermal Method of TiO2-RGO Nanocomposite and Using as Photoanode of Dye-Sensitized Solar Cell

2021 ◽  
Vol 19 (8) ◽  
pp. 94-98
Author(s):  
Bassam A. Al-jabery ◽  
Ibrahim Shakir Mutashar ◽  
Majid R. Al-bahrani
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Power Conversion ◽  
Hydrothermal Process ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Structural And Optical Properties ◽  
Dye Sensitized ◽  
Electron Collection ◽  
Integrated Devices

We explored the photoanode properties of DSSCs by used RGO and TiO2 nanoparticles as an optical electrode (we used the doctor's blade method). Using the hydrothermal process, we prepared a nanocomposite of TiO2/RGO. SEM and XRD, tests were used to study the structural properties of TiO2 and TiO2/RGO. When compared the J-V properties of the integrated devices made to those made, the J-V properties of the integrated devices came out on top of used TiO2/RGO as the photoanode in a solar cell for TiO2/RGO, which increased the PCE (8.674±0.063%). We were able to improve the short circuit current density (Jsc) and the power conversion efficiency (PCE) for the effective region by adding RGO to the TiO2. The PCE has improved due to better electron transport, improved electron collection in photoanode, and increased light-harvesting performance. As a result, RGO with distinct structural and optical properties is a viable choice in DSSC.

Enhanced Performance of Dye Sensitized Solar Cell by the Novel Composite TiO2/POEM Photoanodes

2012 ◽  
Vol 1442 ◽  
Author(s):  
Chung-Te Liu ◽  
Ying-Chiao Wang ◽  
Rui-Xuan Dong ◽  
Kuo-Chuan Ho ◽  
Jiang-Jen Lin
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Power Conversion ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Dye Sensitized Solar Cell ◽  
The Novel ◽  
Dye Sensitized ◽  
Polymer Dispersant ◽  
High Roughness

ABSTRACTA novel polymer dispersant, poly(oxyethylene)-segment imide (POEM) in the structure was incorporated in the nanocrystalline TiO2 film as the electrode. The uses of the dispersants could disperse TiO2 by decreasing the van der waals force among the nanoparticles, observed by TEM. The resultant TiO2/POEM film as the photoanode rendered the dye-sensitized solar cell (DSSC) with enhanced performance. By comparing to the traditional photoanode composing of polyethylene glycol (PEG) dispersed TiO2, the POEM dispersed TiO2 provided large surface area and high roughness in the dye adsorbed film. Furthermore, the fabricated TiO2/POEM photoanode has a better light-scattering property which contributes to the improvement for the short-circuit current density (Jsc) and the power-conversion efficiency (_) of the DSSC to be 19.1 mA cm-2 and 8.7%, respectively. The performance is superior to 13.2 mA cm-2 and 7.34% for a DSSC with the photoanode containing TiO2/PEG.

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.

scholarly journals Donor-π-Conjugated Spacer-Acceptor Dye-Sensitized Solid-State Solar Cell Using CuI as the Hole Collector

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
D. N. Liyanage ◽  
K. D. M. S. P. K. Kumarasinghe ◽  
G. R. A. Kumara ◽  
A. C. A. Jayasundera ◽  
K. Tennakone ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solid State ◽  
Short Circuit ◽  
Electrical Power ◽  
Short Circuit Current ◽  
Liquid Electrolyte ◽  
Short Circuit Current Density ◽  
Dye Sensitized ◽  
Type Semiconductor

Dye-sensitized solid-state solar cells (DSSCs) replacing the liquid electrolyte with a p-type semiconductor have been extensively examined to solve the practical problems associated with wet-type solar cells. Here, we report the fabrication of a solid-state solar cell using copper iodide (CuI) as the hole conductor and alkyl-functionalized carbazole dye (MK-2) as the sensitizer. A DSSC sensitized with MK-2 showed a solar-to-electrical power conversion efficiency of 3.33% with a Voc of 496 mV and a Jsc of 16.14 mA cm-2 under AM 1.5 simulated sunlight. The long alkyl chains act as a barrier for charge recombination, and the strong accepting and donating abilities of the cyanoacrylic and carbazole groups, respectively, enhance the absorption of light at a longer wavelength, increasing the short-circuit current density. The efficiency recorded in this work is higher than similar DSSCs based on other hole collectors.

scholarly journals Efficiency enhancement of natural dye sensitized solar cell by optimizing electrode fabrication parameters

2018 ◽  
Vol 35 (4) ◽  
pp. 816-823 ◽  
Author(s):  
M. Khalid Hossain ◽  
M.F. Pervez ◽  
S. Tayyaba ◽  
M. Jalal Uddin ◽  
A.A. Mortuza ◽  
...  
Keyword(s):  
Solar Cell ◽  
Counter Electrode ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Candle Flame

Abstract Efficiency of dye-sensitized solar cell (DSSC) depends on several interrelated factors such as type and concentration of dye, type and thickness of photoelectrode and counter electrode. Optimized combination of these factors leads to a more efficient cell. This paper presents the effect of these parameters on cell efficiency. TiO2 nanoporous thin films of different thicknesses (5 μm to 25 μm) were fabricated on indium doped tin oxide (ITO) coated glass by doctor blading method and characterized by inverted microscope, stylus surface profiler and scanning electron microscope (SEM). Natural organic dye of different concentrations, extracted from turmeric, was prepared with ethanol solvent. Different combinations of dye concentrations and film thicknesses along with different types of carbon catalyst have been investigated by I-V characterization. The result shows that the cell made of a counter electrode catalyst material prepared by candle flame carbon combined with about 15 μm thick photoelectrode and 100 mg/mL dye in ethanol solvent, achieves the highest efficiency of 0.45 %, with open circuit voltage of 566 mV and short circuit current density of 1.02 mA/cm2.

Nanocoral PbS Films Schottky Solar Cell

2014 ◽  
Vol 925 ◽  
pp. 605-609 ◽  
Author(s):  
A.S. Obaid ◽  
Alaa Ahmed Dihe ◽  
B.M. Salih ◽  
Z. Hassan ◽  
Y. Al-Douri ◽  
...  
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Cross Sectional ◽  
Thermal Evaporator ◽  
P Type

This study reports on the fabrication of a Schottky solar cell with a cross-sectional schematic: ITO/PbS/Al with a commercial transparent conductive ITO and a p-type PbS absorber layer deposited by using a thermal evaporator. The structural and optical properties of constituent films are presented. X-ray diffraction showed that the thin films are polycrystalline. By using scanning electron microscopy, this study showed that the films possessed a uniform surface morphology over the substrate, and the films exhibit a nanocoral structure. Open circuit voltage,short-circuit current density and characteristics were studied under 30 mW/cm2 solar radiation.

scholarly journals Dye sensitized solar cell (DSC) based on reduced graphene oxide (rGO)-TiO2 nanocomposite photoelectrode and polyaniline (PANI) counter electrode

2020 ◽  
Vol 71 (7) ◽  
pp. 789-801
Author(s):  
T.O. Ahmed ◽  
O.O. Ogunleye ◽  
A.Y. Abdulrahaman ◽  
N. Alu
Keyword(s):  
Graphene Oxide ◽  
Solar Cell ◽  
Current Density ◽  
Counter Electrode ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Reduced Graphene

We report the successful application of reduced graphene oxide–titania (rGO–TiO2) nanocomposite as an efficient photoelectrode and an inexpensive polyaniline (PANI) synthesized by in-situ polymerization on graphite foam as a platinum substitute for tri-iodide reduction for dye‐sensitized solar cell (DSC). The bulk carrier concentration and conductivity of the PANI was measured to be 3.02x1017cm-3 and 4.89x10-1 W-1cm-1 respectively. Subsequently, three DSCs were assembled with rGO–TiO2 nanocomposite photoelectrode and PANI as counter electrode for one and the other two assembled using unmodified TiO2 photoelectrode with PANI and platinum as counter electrodes, respectively. The rGO loading allows more dye to be adsorbed due its large surface area thus improving the light harvesting efficiency (LHE). This improvement in LHE increases the short circuit current density (JSC). The JSC increase is more substantial compared to the reduction in VOC; thus, the increase in the efficiency of the cell with rGO-TiO2 nanocomposite electrode. The short circuit current density for the rGO-TiO2 DSC with PANI counter electrode is 0.45mAcm-2 while that for the unmodified TiO2 DSCs with PANI counter electrode and platinum counter electrode are 0.11mAcm-2 and 0.10 mAcm-2 respectively. This corresponds to 76% increase in the current density and it increases collection rate at the photoelectrode leading to enhanced power conversion efficiency of 0.13% compared with 0.04% and 0.02% for the DSCs assembled with unmodified TiO2 under full sunlight illumination (100 mW/cm2, AM 1.5G) as a result of the better charge collection efficiency of rGO, which reduces the back electron transfer process. This represent 69% enhancement of energy conversion efficiency in the DSC consisting of rGO modified TiO2

scholarly journals The Effect of Annealing Time on TiO2–Based Dye Sensitized Solar Cell: Natural Pigment

2018 ◽  
Vol 6 (6) ◽  
Author(s):  
Hafeez Yusuf Hafeez ◽  
Bala Ismail Adam
Keyword(s):  
Solar Cell ◽  
Annealing Time ◽  
Fill Factor ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Energy Conversion Efficiency ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized

In this analytical approach we fabricate and characterized a Titanium Dioxide Dye sensitized solar cell using Doctor-Blade Technique. The samples were given annealing treatment at various time of 20, 30 and 40 minutes respectivelyat constant annealing temperature of 450oC. The device under test (DUT) were tested using a Kiethley 2400, source meter under A.M 1.5 (1000W/m2) illumination from a Newport class A solar simulator.The results shows that at the miscellaneous annealing time, the open circuit voltagesVoc= 0.28V, 0.30V and 0.29V, the short circuit current density Jsc=95.5µAcm-2 , 104.1µAcm-2and 105µAcm-2, the fill factor FF= 0.411, 0.448 and 0.525 and the energy conversion efficiency, η = 0.011, 0.014 and 0.016 respectively.With best results of open circuit voltage Voc=0.30, short circuit current density Jsc= 105mAcm-2, fill factor FF= 0.525 and energy conversion efficiency η= 0.016 was achieved.It was observed that the power density, Fill Factor and efficiency increases with increasewith increase in annealing time.

Hydrochloric Acid Treatment of TiO2 Electrode for Quasi-Solid-State Dye-Sensitized Solar Cells

2007 ◽  
Vol 7 (11) ◽  
pp. 3722-3726 ◽  
Author(s):  
Dong-Won Park ◽  
Kyung-Hee Park ◽  
Jae-Wook Lee ◽  
Kyung-Jun Hwang ◽  
Yong-Kook Choi
Keyword(s):  
Solar Cell ◽  
Solid State ◽  
Hydrochloric Acid ◽  
Acid Treatment ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Hydrochloric Acid Treatment

Quasi-solid-state dye-sensitized solar cell was fabricated by sandwiched polymer electrolyte containing liquid electrolytes between the dye-sensitized TiO2 electrode and a Pt electrode. The influence of hydrochloric acid treatment of TiO2 photoelectrode on the photoelectronic performance was investigated. Quasi-solid-state dye-sensitized solar cell showed better photoelectronic performance when the TiO2 electrode was treated with hydrochloric acid than that without treatment. The short-circuit current density (Jsc), the open-circuit voltage (Voc), and a conversion efficiency obtained for an incident light intensity of 100 mW m−2 were 6.49 mA cm−2, 0.76 V and 4.1%, respectively. It was found that the hydrochloric acid treatment of TiO2 electrode increased the short-circuit current density and cell efficiency.

Study of the Effect of Luminescence Down-Shifting on GaAs Solar Cells With Several Optical Windows Layers

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Mahfoud Abderrezek ◽  
Mohamed Fathi ◽  
Farid Djahli ◽  
Mohammed Ayad
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Theoretical Study ◽  
Organic Dyes ◽  
Short Circuit ◽  
Power Conversion ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Optically Active ◽  
Standard Spectrum

Luminescence down shifting (LDS) is an elegant approach used to improve the efficiency of single solar cells, in this approach, the photovoltaic (PV) glass material is replaced with a thin layer of polymer polymethyl methacrylate (PMMA) doped with optically active organic dyes. In this paper, we present a theoretical study. To assess the improvements introduced by LDS on an n-i-p-GaAs solar cells structure formed by diverse types of windows layers (Al0.8Ga0.2As, Al0.52In0.48P, and Ga0.5In0.5P). The performance of the solar cell is investigated as a function of organic dyes. It has been shown that the gain in power conversion efficiency attains values up to 5.79, 8.15, and 8.37% with Al0.8Ga0.2As, Al0.52In0.48P, and Ga0.5In0.5P in the standard spectrum AM1.5G, moreover, they increase the short circuit current density.

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