scholarly journals Evaluation and Optimization to Recycle Used TiO2Photoelectrode for Dye-Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Ruei-Tang Chen ◽  
Chien-Feng Liao
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Term Operation ◽  
Dye Sensitized ◽  
Naoh Solution ◽  
Neutral Media ◽  
Sensitized Solar Cells ◽  
Better Than

This study proposes a method for recycling and activating the titanium oxide (TiO2)/fluorine-doped tin oxide (FTO) photoanode in dye-sensitized solar cells (DSCs) by repeated dye adsorption and desorption processes using various desorption agents. This simple and convenient method could be utilized to activate TiO2photoelectrodes for DSCs after the long-term operation. The devices are immersed in acidic, alkaline, and neutral media of various concentrations for desorption and then are soaked in the N719 solution again. The optimal device had an overall power conversion efficiency (AM 1.5 G, 100 mW/cm2) with 5 × 10−3 M NaOH solution as a desorption agent being 6.44% better than that of devices that had not undergone recycling and activation.

scholarly journals Low-Temperature Processing of Titanium Oxide Nanoparticles Photoanodes for Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Naji Al Dahoudi ◽  
Qifeng Zhang ◽  
Guozhong Cao
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Photocurrent Density ◽  
Titanium Oxide Nanoparticles ◽  
Dye Sensitized ◽  
Low Temperature Processing ◽  
Sensitized Solar Cells ◽  
Better Than

Using the low-temperature processing of different organofunctional silanes like TEOS, GPTS, and MPTS to incorporate within TiO2network, dye-sensitized solar cells (DSCs) processed at low temperatures were obtained. The UV-cured MPTS-modified layer exhibited better performance over the TEOS and GPTS, where better mechanical stable layer is achieved in addition to better interconnection between the TiO2nanoparticles. TheJ-Vcharacteristics of the DSC composed of silane-based layer showed that the improved cell performance was due to the high photocurrent density accompanied with more dye adsorption and higher charge injection from TiO2to FTO substrate resulting from the formation of an ohmic contact with the substrate. The highest conversion efficiency attained for MPTS-TiO2layer cured with UV and followed by heating at 300∘C was3.75±0.07%, which is 2.8 times better than the GPTS-based layer.

scholarly journals Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2150
Author(s):  
Ji-Hye Kim ◽  
Sung-Yoon Park ◽  
Dong-Hyuk Lim ◽  
So-Young Lim ◽  
Jonghoon Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Ruthenium Complex ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Synthesis Process ◽  
Dye Sensitized ◽  
Water Based ◽  
Sensitized Solar Cells

Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO2 was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO2. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

X-ray Characterization of Dye Adsorption in Coadsorbed Dye-Sensitized Solar Cells

2013 ◽  
Vol 117 (33) ◽  
pp. 17033-17038 ◽  
Author(s):  
Mitsunori Honda ◽  
Masatoshi Yanagida ◽  
Liyuan Han ◽  
Kenjiro Miyano
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
X Ray ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals From Cell to Module: Fabrication and Long-term Stability of Dye-sensitized Solar Cells

2017 ◽  
Vol 214 ◽  
pp. 012007 ◽  
Author(s):  
N M Nursam ◽  
J Hidayat ◽  
L Muliani ◽  
P N Anggraeni ◽  
L Retnaningsih ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Diatom frustules enhancing the efficiency of gel polymer electrolyte based dye-sensitized solar cells with multilayer photoelectrodes

2020 ◽  
Vol 2 (1) ◽  
pp. 199-209 ◽  
Author(s):  
T. M. W. J. Bandara ◽  
M. Furlani ◽  
I. Albinsson ◽  
Angela Wulff ◽  
B.-E. Mellander
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Polymer Electrolyte ◽  
Nanostructured Materials ◽  
Gel Polymer Electrolyte ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Easy Task ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The incorporation of nanostructures that improve light scattering and dye adsorption has been suggested for dye-sensitized solar cells (DSSCs), but the manufacture of photonic and nanostructured materials with the desired properties is not an easy task.

scholarly journals ZnO@TiO2 Core/Shell Nanowire Arrays with Different Thickness of TiO2 Shell for Dye-Sensitized Solar Cells

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 325
Author(s):  
Liqing Liu ◽  
Hui Wang ◽  
Dehao Wang ◽  
Yongtao Li ◽  
Xuemin He ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Zno Nanowires ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Tio2 Shell

The ZnO@TiO2 core/shell nanowire arrays with different thicknesses of the TiO2 shell were synthesized, through depositing TiO2 on the ZnO nanowire arrays using the pulsed laser deposition process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that these core/shell nanowires were homogeneously coated with TiO2 nanoparticles with high crystallinity, appearing to be a rather rough surface compared to pure ZnO nanowires. The efficiency of ZnO@TiO2 core/shell structure-based dye-sensitized solar cells (DSSCs) was improved compared with pure ZnO nanowires. This is mainly attributed to the enlarged internal surface area of the core/shell structures, which increases dye adsorption on the anode to improve the light harvest. In addition, the energy barrier which formed at the interface between ZnO and TiO2 promoted the charge separation and suppressed the carrier recombination. Furthermore, the efficiency of DSSCs was further improved by increasing the thickness of the TiO2 shell. This work shows an efficient method to achieve high power conversion efficiency in core/shell nanowire-based DSSCs.

Aging effect in dye-sensitized solar cells sealed with thermoplastic films

2019 ◽  
Vol 36 (2) ◽  
pp. 68-72 ◽  
Author(s):  
Mian-En Yeoh ◽  
Adrian Jaloman ◽  
Kah-Yoong Chan
Keyword(s):  
Solar Cells ◽  
Aging Time ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Aging Effect ◽  
Gradual Improvement ◽  
Content Type ◽  
Term Operation ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Purpose The purpose of this paper is to elucidate the aging effect in dye-sensitized solar cells (DSSCs) sealed with thermoplastic film and to compare it with unsealed DSSCs. Design/methodology/approach The paper presents the steps of the fabrication of standard DSSC, as well as the DSSC-sealing processes, by using thermoplastic film. Current-voltage characterization was performed to observe the changes in efficiency, fill factor, short circuit current density and open circuit voltage for both unsealed and sealed DSSCs for aging time up to 336 h. Findings The unsealed DSSC showed significant drop in efficiency from 4.26 to 2.42 per cent within the first 5.5 h of aging time because of the leakage and volatilization of the solvent in the electrolyte. On the other hand, the sealed DSSC exhibited a gradual improvement of efficiency from 4.16 to 4.73 per cent after the first 216 h of aging time. The initial efficiency increment can be ascribed to the improved adsorption of electrolyte into the titanium dioxide film because of the gradual desorption of excess dye from TiO2 with increasing aging time. Originality/value This paper demonstrates the importance of the proper sealing process for the long-term operation of DSSC.

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