scholarly journals Photoelectric Properties of DSSCs Sensitized by Phloxine B and Bromophenol Blue

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Penghui Ren ◽  
Yuanzuo Li ◽  
Yuehua Zhang ◽  
Hongshuai Wang ◽  
Qungui Wang
Keyword(s):  
Dipole Moment ◽  
Dye Sensitized Solar Cells ◽  
Electron Injection ◽  
Open Circuit ◽  
Frontier Molecular Orbital ◽  
Bromophenol Blue ◽  
Photoelectric Properties ◽  
Current Voltage ◽  
Ft Ir ◽  
Sensitized Solar Cells

Phloxine B and bromophenol blue as the sensitizers of dye-sensitized solar cells were investigated via UV-Vis spectra, FT-IR spectra, fluorescence spectra, and current-voltage characteristics. The frontier molecular orbital, vibration analysis, and the first hyperpolarizability were calculated with DFT/6-31G(d). The dipole moment, light harvesting efficiency (LHE), and larger absolute value of driving force of electron injection (ΔGinject) were also discussed. The calculated results were compared with the experimental results of phloxine B and bromophenol blue. It was found that, compared with bromophenol blue, bigger dipole moment of phloxine B results in larger open circuit voltage (Voc) according to the correlation between dipole moment andVoc. At the same time, for configuration of phloxine B, it has higher LHE andΔGinject, which are helpful to enhance the abilities of absorbing sunlight and electron injection. Therefore, higher LHE andΔGinjectfor phloxine B produced a larger value ofJsc.

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 of Natural Dye Extracted from Annatto, Black Plum, Turmeric, Red Spinach, and Cactus as Photosensitizers in TiO2NP/TiNT Composites for Solar Cell Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Shibu Joseph ◽  
Albin John P. Paul Winston ◽  
S. Muthupandi ◽  
P. Shobha ◽  
S. Mary Margaret ◽  
...  
Keyword(s):  
Solar Cell ◽  
Low Cost ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Photovoltaic Properties ◽  
Ft Ir ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

This paper is aimed at how to select, extract, and characterize natural dyes and to use them as sensitizers in dye-sensitized solar cells (DSSCs). Dyes obtained from fresh sources of annatto fruits, black plums, cactus fruits, turmeric roots, and red spinach leaves were used as sensitizers. The dye pigments were analyzed using UV-Vis spectrophotometer and FT-IR for the characterization of their spectral properties. The combination from Titanium dioxide paste with the powdered nanotubes was used as photoanodes for DSSCs. The photovoltaic properties of the DSSCs such as efficiency, fill factor, open-circuit voltage, and short circuit current were studied using a standard illumination of air-mass 1.5 global (AM 1.5 G) having an irradiance of 100 mW/cm2. The highest power conversion efficiencies (η) of 0.7% was achieved for the DSSCs fabricated using dye extracted from annatto fruits and 0.4% each for dyes extracted from black plum fruits and cactus fruits, respectively. The widespread accessibility of these fruits, roots, and leaves and ease of extraction of dyes from these ordinarily available natural resources render them unique and low-cost candidates for solar cell fabrication.

scholarly journals The influence of the dye adsorption time on the DSSC performance

2019 ◽  
Vol 100 ◽  
pp. 00040 ◽  
Author(s):  
Ewelina Krawczak ◽  
Agata Zdyb
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Standard Test ◽  
Open Circuit ◽  
Characteristic Parameters ◽  
Dye Sensitized ◽  
Current Voltage ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSC) of third generation photovoltaic technology, are nowadays one of the most investigated due to possibility to apply ecological and natural materials (dyes) such as alizarin. This paper reports the influence of electrode immersion time on alizarin-based dye-sensitized solar cells performance. The absorption spectra of alizarin dye were measured in the range of 300-800 nm. Fully structured dye-sensitized cells of working area equal to 0.8 cm2 have been fabricated in the sandwich way using four different immersion times of the TiO2 electrodes: 10’, 40’, 1 h, 24 h. The high-performance EL- HPE electrolyte was instilled into the space between electrodes. Current-voltage (I-V) dark and illuminated characteristics have been measured using solar light simulator. Solar cells characterization was carried out under standard test conditions. The solar irradiance was set at 100 mW/cm2 and temperature of the module was maintained at 25°C. Characteristic parameters of the fabricated cells were determined on the basis of measured I-V curves. Series resistances were extracted from I-V characteristics at an open circuit voltage using first order derivatives. It was found that 60 minutes of electrode immersion in dye solution is sufficient to obtain appropriate stage of the dye adsorption.

The Effect of Diatomite on the Photoelectric Properties of TiO2 Dye Sensitized Solar Cells

2013 ◽  
Vol 448-453 ◽  
pp. 1452-1456
Author(s):  
Jiang Biao Feng ◽  
Ling Jun Hua ◽  
Feng Jun Shan ◽  
Zhi Gang Yan ◽  
Guo Chao Qi
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Conductive Glass ◽  
Photoelectric Properties ◽  
Sensitized Solar Cells

Diatomite/TiO2 composite films were prepared with diatomite and P25 TiO2 nanoparticles on conductive glass substrates. The surface morphology and phase composition of the film were characterized with scanning electron microscopy (SEM) and X ray diffraction (XRD). It is concluded that diatomite doped into the film will form granular cores. Dye sensitized solar cells (DSSC) were fabricated with the diatomite/TiO2 composite film as anode, and the photoelectric properties of the cells were tested. Results show that the doping of diatomite can significantly increase the open circuit voltage and short circuit current of DSSC. Optimized photoelectric properties can be acquired as 1.3 percent diatomite doped in TiO2 film.

Preparation and Photoelectric Performance of Eu3+-Doped Porous TiO2 Thin Film Electrode

2010 ◽  
Vol 97-101 ◽  
pp. 2209-2212 ◽  
Author(s):  
Yi Zhou ◽  
Ke Long Huang ◽  
Ming Ming Dang ◽  
Hong Li ◽  
Cai Xia Lv ◽  
...  
Keyword(s):  
Tio2 Film ◽  
Short Circuit ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Film Electrode ◽  
Photoelectric Properties ◽  
Photoelectric Performance ◽  
Current Voltage

The nanoporous TiO2 film doped Eu3+ were prepared by combining the sol-gel and hydrothermal method, which could be applied to dye-sensitized solar cells(DSSC). The films were characterized by XRD, SEM and UV-vis DRS. DSSC photoelectric properties were evaluated by recording current-voltage characteristics under simulated sunlight illumination. The results indicated that Eu3+-doped TiO2 film electrodes increased short-circuit current and the fill facter availably; when TiO2 doping concentration for Eu3+ was 2.0mol%, a short circuit current of 0.389mA, an open circuit voltage of 0.6006V and a fill factor of 0.60 were obtained, which was remarkably better than of undoped TiO2 film electrode; and the optimal thickness attained in this work was 17.2um.

Influence of Graphene (0.01 wt. %) on Structural, Morphological and Photovoltaic Properties of TiO2-Based DSSC Using Electrolyte Gel

2016 ◽  
Vol 846 ◽  
pp. 298-307 ◽  
Author(s):  
Huda Abdullah ◽  
Savisha Mahalingam ◽  
Azimah Omar ◽  
Mohd Zikri Razali ◽  
Aisyah Bolhan ◽  
...  
Keyword(s):  
Thin Films ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
X Ray Diffraction ◽  
Photovoltaic Properties ◽  
X Ray ◽  
Current Voltage ◽  
Reduced Graphene ◽  
The Stability ◽  
Sensitized Solar Cells

Titanium dioxide (TiO2) based dye-sensitized solar cells (DSSCs) doped with reduced graphene oxide, rGO also known as graphene were fabricated at concentrations of 0.01 wt.% . The performance of TiO2/graphene based DSSC and TiO2 based DSSC were studied using electrolytes; PAN-based gel electrolyte. The thin films were characterized using several characterizations such as scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and current-voltage (I-V) measurement. The micrograph images obtained by SEM demonstrated that the thin films are highly porous. The XRD characterization showed that the crystalline particle of thin films is an anatase state and high percentage of carbon composition can be determined using EDX analysis. Through I-V characteristic, the current density Jsc, open circuit-voltage Voc, fill-factor FF, and efficiency η of the TiO2-based DSSC were 0.196 mA/cm2, 0.44 V, 0.496 and 0.043% respectively. I-V characteristic showed an increase in values for rGO/TiO2 based DSSC such as Jsc = 1.177 mA/cm2, Voc = 0.66 V, FF = 0.656 and η = 0.509%. The addition of rGO concentration has improved the efficiency of DSSC while the use of electrolyte gel can sustain the stability of the cell.

GROWTH OF ANTIMONY DOPED ZnO FIBER AND ITS APPLICATION IN DYE SENSITIZED SOLAR CELLS

2010 ◽  
Vol 03 (04) ◽  
pp. 279-283 ◽  
Author(s):  
LEI GUO ◽  
LEI L. KERR
Keyword(s):  
Thermal Evaporation ◽  
Dye Sensitized Solar Cells ◽  
Antimony Oxide ◽  
Dye Sensitized Solar Cell ◽  
Evaporation Process ◽  
Electron Backscattered Diffraction ◽  
Dye Sensitized ◽  
Current Voltage ◽  
Doped Zno ◽  
Sensitized Solar Cells

Antimony doped ZnO (ZnO:Sb) fiber was grown by a simple thermal evaporation process of Zn powder and Sb2O3 . Scanning Electron Microscopy (SEM) shows that the grown fiber reaches more than 70 μm, which is the longest ZnO fiber reported in literature. Electron Backscattered Diffraction (EBSD) study indicates that this crystal is composed of three main phases: antimony doped zinc oxide (ZnO:Sb) , ordonezite (ZnSb2O6) and zinc antimony oxide (Zn7Sb2O12) . The current–voltage (I–V) characteristics demonstrate that the conversion efficiency of dye sensitized solar cell was greatly enhanced by ZnO:Sb fiber.

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.

Influence of Electron Injection Rate in Triphenylamine Based Dye for Dye-Sensitized Solar Cells: A First Principle Study

2019 ◽  
Vol 233 (9) ◽  
pp. 1247-1259
Author(s):  
Madhu Prakasam
Keyword(s):  
Solar Cells ◽  
Absorption Spectra ◽  
Density Functional ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Electron Injection ◽  
Injection Rate ◽  
Visible Absorption ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Abstract In this work, we systematically investigate the impacts of electron-donor based on Triphenylamine (TPA). The Geometry structure, energy levels, light-harvesting ability and ultraviolet-visible absorption spectra were calculated by using Density Functional Theory (DFT) and Time-Dependent-DFT. The electron injection rate of the TPA-N(CH3)2 based dyes has 0.71 eV for high among the dye sensitizer. The First and Second order Hyperpolarizability of the 11.95 × 10−30 e.s.u and 12195.54 a.u, respectively for TPA-N(CH3)2 based dye. The calculated absorption spectra were showed in the ultra-violet visible region for power conversion region. The study reveals that the electron transfer character of TPA-N(CH3)2 based dyes can be made suitable for applications in Dye-Sensitized Solar Cells.

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