scholarly journals Natural Pigments from Plants Used as Sensitizers for TiO2Based Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Reena Kushwaha ◽  
Pankaj Srivastava ◽  
Lal Bahadur
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Solar Spectrum ◽  
Tectona Grandis ◽  
Open Circuit ◽  
Natural Pigments ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Four natural pigments, extracted from the leaves of teak (Tectona grandis), tamarind (Tamarindus indica), eucalyptus (Eucalyptus globulus), and the flower of crimson bottle brush (Callistemon citrinus), were used as sensitizers for TiO2based dye-sensitized solar cells (DSSCs). The dyes have shown absorption in broad range of the visible region (400–700 nm) of the solar spectrum and appreciable adsorption onto the semiconductor (TiO2) surface. The DSSCs made using the extracted dyes have shown that the open circuit voltages (Voc) varied from 0.430 to 0.610 V and the short circuit photocurrent densities (Jsc) ranged from 0.11 to 0.29 mA cm−2. The incident photon-to-current conversion efficiencies (IPCE) varied from 12–37%. Among the four dyes studied, the extract obtained from teak has shown the best photosensitization effects in terms of the cell output.

Thiocyanate Free Ruthenium(II) Complexes for Dye Sensitized Solar Cells (DSSCs)

2018 ◽  
Vol 382 ◽  
pp. 369-373
Author(s):  
Usana Mahanitipong ◽  
Preeyapat Prompan ◽  
Rukkiat Jitchati
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Ligand Charge Transfer ◽  
Sensitized Solar Cells ◽  
Open Circuit Photovoltage

The four thiocyanate free ruthenium(II) complexes; [Ru(N^N)2(C^N)]PF6were synthesized and characterized for dye sensitized solar cells (DSSCs). The results showed that the broad absorptions covered the visible region from metal to ligand charge transfer (MLCT) were obtained with the main peaks at 560, 490 and 400 nm. The materials were studied DSSC performance under standard AM 1.5. Compound PP1 showed the power conversion efficiency (PCE) at 3.10%, with a short-circuit photocurrent density (Jsc) of 7.99 mA cm-2, an open-circuit photovoltage (Voc) of 563 mV and a high fill factor (ff) of 0.690.

Enhanced Efficiency of Au-Deposited BiFeO3 Nanoparticles Based Dye-Sensitized Solar Cells

2013 ◽  
Vol 856 ◽  
pp. 184-187 ◽  
Author(s):  
Narendra Kumar Verma ◽  
Imanpreet Kaur ◽  
Kamaldeep Kaur ◽  
Gurmeet Singh Lotey
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
High Energy ◽  
Open Circuit ◽  
Rhombohedral Structure ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

BiFeO3 nanoparticles have been synthesized by sol-gel method. The deposition of Au on the surface of BiFeO3 has been done using photo-deposition method. X-ray diffraction confirms that the synthesized nanoparticles are possessing rhombohedral structure with R3c space group. The average particles size of the synthesized nanoparticles found to be 26 nm. Synthesized nanoparticles possess band gap 2.28 eV, in the visible region. The dye-sensitized solar cells (DSSCs) have been fabricated using synthesized nanoparticles. The effect of Au-deposition on photovoltaic performance of DSSCs has been investigated. The different performance parameters of fabricated DSSCs viz. open-circuit voltage (VOC), short circuit current-density (JSC) and fill factor (FF) found to be 0.75 V, 6.5 mA/cm2, 0.62, respectively. The high energy-conversion efficiency 2.99%, has been achieved in Au-deposited BiFeO3 based DSSCs.

scholarly journals Prunus domestica dye extraction for fabrication of zinc oxide based dye-sensitized solar cells

BIBECHANA ◽  
2015 ◽  
Vol 13 ◽  
pp. 23-28
Author(s):  
Leela Pradhan Joshi
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Zinc Nitrate ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Dye Extraction ◽  
Sensitized Solar Cells

Aluminium doped Zinc Oxide (AZO) seed layers were deposited on Fluorine doped Tin Oxide (FTO) substrates using a spin coating technique. These were then immersed in growth solutions of zinc nitrate, hexamethylenetetramine and distilled water to develop nanoplates of Zinc Oxide (ZnO). The nanostructures of ZnO grown on FTO were studied using x-ray diffraction techniques. Dye-sensitized solar cells (DSSC) were fabricated using two prepared electrodes, one of dye-loaded zinc oxide and another that was platinum coated. The electrolyte used was potassium iodide iodine solution. The performance of the assembled DSCCs was tested by drawing an IV curve. The results showed that the short circuit current and open circuit voltages were about 10 microamperes and 270 millivolts respectively.BIBECHANA 13 (2016) 23-28

Dye-Sensitized Solar Cell Using Saffron Petal Extract as a Novel Natural Sensitizer

2016 ◽  
Vol 139 (2) ◽  
Author(s):  
Kambiz Hosseinpanahi ◽  
Mohammad Hossein Abbaspour-Fard ◽  
Javad Feizy ◽  
Mahmood Reza Golzarian
Keyword(s):  
Solar Cells ◽  
Solid Phase ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Clean Energy ◽  
Open Circuit ◽  
Natural Dye ◽  
Anode Surface ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Natural dye extract of the saffron petal, purified by solid-phase extraction (SPE) technique, has been studied as a novel sensitizing dye to fabricate TiO2 nanoparticles-based dye-sensitized solar cells (DSSC). The extract was characterized using ultraviolet–visible (UV–Vis) and Fourier transform infrared (FTIR) spectroscopies to confirm the presence of anthocyanins in saffron petals. The typical current–voltage and the incident photon to current efficiency (IPCE) curves were also provided for the fabricated cell. The saffron petal extract exhibited an open-circuit voltage (Voc) of 0.397 V, short circuit current density (Jsc) of 2.32 mA/cm2, fill factor (FF) of 0.71, and conversion efficiency of 0.66%, which are fairly good in comparison with the other similar natural dye-sensitized solar cells. These are mainly due to the improved charge transfer between the dye extract of saffron petal and the TiO2 anode surface. Considering these results, it can be concluded that the use of saffron petal dye as a sensitizer in DSSC is a promising method for providing clean energy from performance, environmental friendliness, and cost points of view.

scholarly journals Molecular Weight Effects of Biscarbazole-Based Hole Transport Polymers on the Performance of Solid-State Dye-Sensitized Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2516
Author(s):  
Minseon Kong ◽  
Kyeong Seok Kim ◽  
Nguyen Van Nga ◽  
Yeonju Lee ◽  
Yu Seong Jeon ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Solid State ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Hole Transport ◽  
Dye Sensitized ◽  
Liquid Electrolytes ◽  
Sensitized Solar Cells

The leakage and volatilization of liquid electrolytes limit the commercialization of dye-sensitized solar cells (DSCs). As solid-state (ss) hole-transporting materials, free from leakage and volatilization, biscarbazole-based polymers with different molecular weights (PBCzA-H (21,200 g/mol) and PBCzA-L (2450 g/mol)) were applied in combination with additives to produce ssDSCs. An ssDSC with PBCzA-H showed a better short-circuit current (Jsc), open-circuit voltage (Voc), and fill factor (FF) than a device with PBCzA-L, resulting in 38% higher conversion efficiency. Compared to the PBCzA-L, the PBCzA-H with a higher molecular weight showed faster hole mobility and larger conductivity, leading to elevations in Jsc via rapid hole transport, Voc via rapid hole extraction, and FF via lowered series and elevated shunt resistances. Thus, it is believed that PBCzA-H is a useful candidate for replacing liquid electrolytes.

scholarly journals There Is a Future for N-Heterocyclic Carbene Iron(II) Dyes in Dye-Sensitized Solar Cells: Improving Performance through Changes in the Electrolyte

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4181 ◽  
Author(s):  
Mariia Karpacheva ◽  
Vanessa Wyss ◽  
Catherine E. Housecroft ◽  
Edwin C. Constable
Keyword(s):  
Solar Cells ◽  
Alkyl Chain ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Ion Concentration ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

By systematic tuning of the components of the electrolyte, the performances of dye-sensitized solar cells (DSCs) with an N-heterocyclic carbene iron(II) dye have been significantly improved. The beneficial effects of an increased Li+ ion concentration in the electrolyte lead to photoconversion efficiencies (PCEs) up to 0.66% for fully masked cells (representing 11.8% relative to 100% set for N719) and an external quantum efficiency maximum (EQEmax) up to approximately 25% due to an increased short-circuit current density (JSC). A study of the effects of varying the length of the alkyl chain in 1-alkyl-3-methylimidazolium iodide ionic liquids (ILs) shows that a longer chain results in an increase in JSC with an overall efficiency up to 0.61% (10.9% relative to N719 set at 100%) on going from n-methyl to n-butyl chain, although an n-hexyl chain leads to no further gain in PCE. The results of electrochemical impedance spectroscopy (EIS) support the trends in JSC and open-circuit voltage (VOC) parameters. A change in the counterion from I− to [BF4]− for 1-propyl-3-methylimidazolium iodide ionic liquid leads to DSCs with a remarkably high JSC value for an N-heterocyclic carbene iron(II) dye of 4.90 mA cm−2, but a low VOC of 244 mV. Our investigations have shown that an increased concentration of Li+ in combination with an optimized alkyl chain length in the 1-alkyl-3-methylimidazolium iodide IL in the electrolyte leads to iron(II)-sensitized DSC performances comparable with those of containing some copper(I)-based dyes.

scholarly journals Performance Comparison between Dyes on Single Layered TiO2 Dye Sensitized Solar Cell

2014 ◽  
Vol 1008-1009 ◽  
pp. 78-81
Author(s):  
Nair Gomesh ◽  
Z. M. Arief ◽  
Syafinar Ramli ◽  
M Irwanto ◽  
Y. M. Irwan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Dyes ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Electrical Performance ◽  
Blue Dye ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye Sensitized Solar Cells (DSSC) is another kind of solar cell from the third generation that forms a photovoltaic. DSSC is designed to reduce cost from usage of expensive material in conventional solar panels. The purpose of this project is to fabricate and compare dye sensitized solar cells (DSSC) by using organic dye from blueberry and blue dye from chemical substances. The DSSC is fabricated using ‘Doctor Blade’ method. Results are based on investigating the electrical performance and characteristic of the fabricated TiO2 solar cell based on these comparisons of dyes in order to investigate the potential of organic dyes as a light absorbing mechanism. The required data that is investigated are the open circuit voltage, Voc, short circuit current, Isc, fill factors, solar cells efficiency and UV absorption. Result shows good potential in the blueberry dyes as a sensitizer but further investigation is needed in order to fully understand the characteristic of these organic dyes.

Organic Sensitizers Containing Julolidine Moiety for Dye-Sensitized Solar Cells

2008 ◽  
Vol 8 (9) ◽  
pp. 4761-4766 ◽  
Author(s):  
Dong Wook Kim ◽  
Jin Joo Choi ◽  
Man Ku Kang ◽  
Yongku Kang ◽  
Changjin Lee
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

We prepared organic sensitizers (S1 and S2) containing julolidine moiety as a donor, phenyl or phenylene thiophene units as a conjugation bridge, and cyano acetic acid as an acceptor for dye sensitized solar cells. S1 exhibited two absorption maxima at 441 nm (ε = 26 200) and 317 nm (ε = 15 500) due to the π–π* transition of the dye molecule. S2 dyes with an additional thiophene unit showed the absorption maximum extended by 18 nm. DSSCs based on S1 dye achieved 2.66% of power conversion efficiency with 8.3 mA cm−2 of short circuit current, 576 mV of open circuit voltage, and 0.56 of fill factor. DSSCs using S2 dye with a longer conjugation attained only 1.48% of power conversion efficiency. The 0.21 V lower driving force for regeneration of the S2 dye compared to the S1 dye is one of the reasons for low conversion efficiency of the S2 dye.

Fabrication of Core-Shell Structured TiO2/MgO Electrodes for Dye-Sensitized Solar Cells

2015 ◽  
Vol 787 ◽  
pp. 3-7 ◽  
Author(s):  
S. Karuppuchamy ◽  
C. Brundha
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Core Shell ◽  
Dye Sensitized ◽  
The Core ◽  
Sensitized Solar Cells

We demonstrated the construction and performance of dye-sensitized solar cells (DSCs) based on nanoparticles of TiO2coated with thin shells of MgO by simple solution growth technique. The XRD patterns confirm the presence of both TiO2and MgO in the core-shell structure. The effect of varied shell thickness on the photovoltaic performance of the core-shell structured electrode is also investigated. We found that MgO shells of all thicknesses perform as barriers that improve open-circuit voltage (Voc) of the DSCs only at the expense of a larger decrease in short-circuit current density (Jsc). The energy conversion efficiency was greatly dependent on the thickness of MgO on TiO2film, and the highest efficiency of 4.1% was achieved at the optimum MgO shell layer.

scholarly journals Model Dye-Sensitized Solar Cell dan Aplikasinya Berdasarkan Data Temperatur Harian: Studi Kasus Pangkalpinang

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Aliefia Noor ◽  
Meri Hamdini ◽  
Salsabila Ramadina ◽  
Yuant Tiandho
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Effect Of Temperature ◽  
Synthesis Process ◽  
Dye Sensitized ◽  
Proposed Model ◽  
Sensitized Solar Cells

<p>Dye-Sensitized Solar Cells (DSSC) is photovoltaic with a dye that functions as an acceptor of sunlight. The great potential of using DSSC lies in the ease of the synthesis process, and the dyes used can come from plants. However, like most other solar cells, increasing the operating temperature can degrade the DSSC performance and thus decrease the efficiency. This article presents a model of the relationship between the effect of temperature on DSSC performance. The model proposed is derived from the DSSC equivalence with a diode circuit. By confirming the experimental research results, it is known that the model presented in this study has excellent accuracy on various DSSC performance parameters (R2&gt; 0.99). The performance studied includes the I-V curve's shape, the value of the short-circuit current, the diode leakage current, and the open-circuit voltage. Based on daily temperature data in Pangkalpinang City, the potential performance of the DSSC could also be determined when it was developed in Kep. Bangka Belitung. The short-circuit current value obtained is in the range of 14 A with a voltage of 0.6 V. It is hoped that this proposed model can be information for the development of DSSC because of its enormous potential application in Indonesia.</p>

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