Enhancement of the Photovoltaic Potential in Mimosa Pudica-Based Dye for Sensitization of the Working Electrode in the Construction of Solar Cell

2021 ◽  
pp. 1-21
Author(s):  
Manasseh B. Shitta ◽  
Emmanuel O.B. Ogedengbe ◽  
Oluwole B. Familoni ◽  
Oluwatoyin T. Ogundipe
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Organic Matrix ◽  
Tio2 Layer ◽  
Mimosa Pudica ◽  
Solar Module ◽  
Renewable Power ◽  
Diffusion Characteristics ◽  
In Series

Abstract The potential enhancement of extract from Mimosa pudica (M.pudica) leaf for sensitizing TiO2 layer towards the production of organic solar cell is investigated. A unique diffusion model that incorporates the concentration of the extract in the TiO2 layer is adopted. The diffusion characterization of the extract into the TiO2 provides a proper understanding of the dynamics of the extract within the layer. This research applies the combination of experimental and numerical techniques towards the investigation of the diffusion characteristics in Mimosa pudica extract. Experimental chromatograph of the extract is conducted in order to reveal the properties and concentration of the extract. Three different thickness of TiO2 deposit, and are sensitized at different hours in order to monitor the absorbance. Using the finite volume method (FVM), the adsorption and diffusion characteristics of the extract into the layer of TiO2 are modelled. The current voltage characteristics of the cell are combined in series as a standard module and its application modelled in an audited office space. The cell area characterised is 0.3848 cm2, the conversion efficiency of 1.35 % is obtained. The concentration model of the extract in TiO2 and the entrance velocity is presented. The experimental and numerical results compared favourably. However, it is anticipated that additional taxonomical characterization of M.pudica and advanced investigation into organic matrix composite will provide a useful guide for the synthesis of the natural dye and enhance the conversion efficiency of the solar module for renewable power generation.

Characterization of Perovskite Solar Cell with Fe3+ Doped TiO2 Layer

2020 ◽  
Vol 20 (1) ◽  
pp. 552-556 ◽  
Author(s):  
Seong Gwan Shin ◽  
Sangmo Kim ◽  
Chung Wung Bark ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Perovskite Solar Cell ◽  
Tio2 Layer ◽  
Doped Tio2

Ruthenium phthalocyanines with axial carboxylate ligands: Synthesis and function in solar cells based on nanocrystalline TiO2

2002 ◽  
Vol 06 (03) ◽  
pp. 217-224 ◽  
Author(s):  
Masaru Yanagisawa ◽  
Ferenc Korodi ◽  
Jianjun He ◽  
Licheng Sun ◽  
Villy Sundström ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Nanocrystalline Tio2 ◽  
Axial Ligands ◽  
Phthalocyanine Dyes ◽  
A Cell ◽  
Flash Column Chromatography ◽  
And Function

The synthesis and characterization of phthalocyaninato-ruthenium ( PcRu ) complexes with potential functional axial ligands are described. The solubility of these PcRu complexes was much improved compared to their parent phthalocyanines without Ru , enabling purification by normal flash column chromatography and also NMR measurements in common solvents (e. g. DMSO - d 6 and CDCl 3). Adsorption of these phthalocyanine dyes onto the surface of a semiconductor through the carboxyl group(s) in the axial ligands prevents to some extent formation of H-aggregates, which is typical for phthalocyanines. It also prevents stacking of the dye molecules on the surface. The photovoltaic behavior of sandwich solar cells based on nanostructured TiO 2 films sensitized by these PcRu complexes was studied under irradiation with visible light. For a solar cell based on bis(4-carboxypyridine)-phthalocyaninato ruthenium(II) (1) sensitized nanoporous-nanocrystalline TiO 2, a monochromatic incident photon-to-current conversion efficiency (IPCE) of 21% was obtained at 640 nm. The overall conversion efficiency (η) was 0.61%, which is one of the best results for a solar cell based on a phthalocyanine dye. For a cell based on (4-carboxypyridine)-(4-(2-ethoxy)ethyloxycarbo-nylpyridine)-2,3,9,10,16,17,23,24-octa(n-pentyloxy)-phthalocyaninato ruthenium(II) (5) sensitized TiO 2, a IPCE of 6.6% at 640 nm and η of 0.58% were obtained.

scholarly journals Hybrid Solar Cell using Conjugated Chlorophyll from Pandanus Amaryllifolius as Photosensitizers

2019 ◽  
Vol 8 (4) ◽  
pp. 10142-10147
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solar Energy ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Hybrid Solar Cell ◽  
Hybrid Solar Cells ◽  
Renewable Power ◽  
Pandanus Amaryllifolius

Solar energy is one in all few sources to renewable power and it is considerably critical in our each day lifestyles usage thus resulted to ensure the practicality and usefulness of the devices which regularly used to capture and manipulate solar energy. In this work, studies the effect of conjugated chlorophyll (iCHLO) on power conversion efficiency with relation of iCHLO where optical and electrical properties were investigated. These hybrid solar cells consist of combination of organic (Poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) and iCHLO) and inorganic (Titanium Dioxide, TiO2) materials. These hybrid solar cells were fabricated bilayer of ITO/TiO2/PEDOT: PSS/iCHLO/Al. Chlorophyll compound (CHLO) was extracted from the Pandanus amaryllifolius leaves. CHLO undergoes conjugate process by oxidation polymerization using Ferric Chloride (FeCl3) as catalyst. Different percentage of FeCl3 was varied by 5%, 10% and 15% of CHLO molecular weight. Result shows that UV-Vis absorption spectra of CHLO was absorbed in the range of 400 nm – 600 nm (CHLO-PA) and 240 nm - 360 nm (iCHLO-PA). The highest power conversion efficiency (PCE) was obtained at 1.33% and electrical conductivity is 0.135 Scm1 for ITO/TiO2/PEDOT: PSS/iCHLO-PA 10% hybrid solar cell.

scholarly journals Characterization of Nanocrystalline SiGe Thin Film Solar Cell with Double Graded-Dead Absorption Layer

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Chao-Chun Wang ◽  
Dong-Sing Wuu ◽  
Shui-Yang Lien ◽  
Yang-Shih Lin ◽  
Chueh-Yang Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Short Circuit ◽  
Nanocrystalline Silicon ◽  
Solar Cell Application ◽  
Absorption Layer ◽  
Cell Conversion

The nanocrystalline silicon-germanium (nc-SiGe) thin films were deposited by high-frequency (27.12 MHz) plasma-enhanced chemical vapor deposition (HF-PECVD). The films were used in a silicon-based thin film solar cell with graded-dead absorption layer. The characterization of the nc-SiGe films are analyzed by scanning electron microscopy, UV-visible spectroscopy, and Fourier transform infrared absorption spectroscopy. The band gap of SiGe alloy can be adjusted between 0.8 and 1.7 eV by varying the gas ratio. For thin film solar cell application, using double graded-dead i-SiGe layers mainly leads to an increase in short-circuit current and therefore cell conversion efficiency. An initial conversion efficiency of 5.06% and the stabilized efficiency of 4.63% for an nc-SiGe solar cell were achieved.

scholarly journals Application of a Noncarboxylated Dye Compound in a Dye-Sensitized Solar Cell Containing a Cyclodextrin Layer

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Tatsuya Takeshita ◽  
Takao Umeda ◽  
Noriaki Oonishi ◽  
Michihiro Hara
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Sodium Salt ◽  
Ethanol Solution ◽  
Light Irradiation ◽  
Dye Sensitized Solar Cell ◽  
Incident Photon ◽  
Dye Sensitized ◽  
Fabrication And Characterization

We report the fabrication and characterization of a dye-sensitized solar cell containing a carboxymethyl-β-cyclodextrin sodium salt (CM-β-CD) layer and a noncarboxylated dye compound (tris(2,2′-bipyridyl)ruthenium(II)dichloride hexahydrate (Ru-dye)). The values of the incident photon-to-current conversion efficiency (IPCE) of the Ru-dye/CM-β-CD-containing device measured under 450 and 490 nm light irradiation were, respectively, 2.35% and 3.33%. The IPCE was due to the absorption of Ru-dye in ethanol solution. In contrast, the IPCE of the device that was prepared without the CM-β-CD layer measured under 450 nm irradiation was approximately three times smaller. Accordingly, the current findings demonstrate the application of a noncarboxylated dye compound in DSSCs incorporating a CM-β-CD layer.

Retraction Notice: A Kind of Effective Method to Improve the Conversion Efficiency of the Solar Cell

2017 ◽  
Vol 10 (1) ◽  
pp. 35-35
Author(s):  
Xing-Fang Jiang ◽  
Xiang-Min Kong ◽  
Xin-Lu Li ◽  
Hong Jiang ◽  
Dong-Dong Chen
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Retraction Notice

scholarly journals Antireflection Improvement and Junction Quality Optimization of Si/PEDOT:PSS Solar Cell with the Introduction of Dopamine@Graphene

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5986
Author(s):  
Tao Chen ◽  
Hao Guo ◽  
Leiming Yu ◽  
Tao Sun ◽  
Anran Chen ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
High Performance ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Electrochemical Impedance Spectra ◽  
Solar Cell Performance ◽  
Photovoltaic Conversion ◽  
Photovoltaic Conversion Efficiency

Si/PEDOT: PSS solar cell is an optional photovoltaic device owing to its promising high photovoltaic conversion efficiency (PCE) and economic manufacture process. In this work, dopamine@graphene was firstly introduced between the silicon substrate and PEDOT:PSS film for Si/PEDOT: PSS solar cell. The dopamine@graphene was proved to be effective in improving the PCE, and the influence of mechanical properties of dopamine@graphene on solar cell performance was revealed. When dopamine@graphene was incorporated into the cell preparation, the antireflection ability of the cell was enhanced within the wavelength range of 300~450 and 650~1100 nm. The enhanced antireflection ability would benefit amount of the photon-generated carriers. The electrochemical impedance spectra test revealed that the introduction of dopamine@graphene could facilitate the separation of carriers and improve the junction quality. Thus, the short-circuit current density and fill factor were both promoted, which led to the improved PCE. Meanwhile, the influence of graphene concentration on device performances was also investigated. The photovoltaic conversion efficiency would be promoted from 11.06% to 13.15% when dopamine@graphene solution with concentration 1.5 mg/mL was applied. The achievements of this study showed that the dopamine@graphene composites could be an useful materials for high-performance Si/PEDOT:PSS solar cells.

Synthesis and characterization of a series of 1-methyl-4-[2-aryl-1-diazenyl]piperazines and a series of ethyl 4-[2-aryl-1-diazenyl]-1-piperazinecarboxylates

2004 ◽  
Vol 82 (8) ◽  
pp. 1294-1303 ◽  
Author(s):  
Vanessa Renée Little ◽  
Keith Vaughan
Keyword(s):  
Free Energy ◽  
Chemical Shifts ◽  
Linear Free Energy Relationship ◽  
Piperazine Ring ◽  
Linear Free Energy ◽  
In Series ◽  
Methylene Groups ◽  
Diazonium Coupling ◽  
The Difference

1-Methylpiperazine was coupled with a series of diazonium salts to afford the 1-methyl-4-[2-aryl-1-diazenyl]piperazines (2), a new series of triazenes, which have been characterized by 1H and 13C NMR spectroscopy, IR spectroscopy, and elemental analysis. Assignment of the chemical shifts to specific protons and carbons in the piperazine ring was facilitated by comparison with the chemical shifts in the model compounds piperazine and 1-methylpiperazine and by a HETCOR experiment with the p-tolyl derivative (2i). A DEPT experiment with 1-methylpiperazine (6) was necessary to distinguish the methyl and methylene groups in 6, and a HETCOR spectrum of 6 enabled the correlation of proton and carbon chemical shifts. Line broadening of the signals from the ring methylene protons is attributed to restricted rotation around the N2-N3 bond of the triazene moiety in 2. The second series of triazenes, the ethyl 4-[2-phenyl-1-diazenyl]-1-piperazinecarboxylates (3), have been prepared by similar diazonium coupling to ethyl 1-piperazinecarboxylate and were similarly characterized. The chemical shifts of the piperazine ring protons are much closer together in series 3 than in series 2, resulting in distortion of the multiplets for these methylenes. It was noticed that the difference between these chemical shifts in 3 exhibited a linear free energy relationship with the Hammett substituent constants for the substituents in the aryl ring. Key words: triazene, piperazine, diazonium coupling, NMR, HETCOR, linear free energy relationship.

Sign in / Sign up

Export Citation Format

Share Document