Correlations between Photovoltaic Characteristics, Adsorption Number, and Regeneration Kinetics in Dye-Sensitized Solar Cells Revealed by Scanning Photocurrent Microscopy

Langmuir ◽  
2015 ◽  
Vol 31 (25) ◽  
pp. 7158-7165 ◽  
Author(s):  
Masaaki Mitsui ◽  
Yuya Kawano ◽  
Kyosuke Mori ◽  
Naoto Wakabayashi
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Photovoltaic Characteristics ◽  
Sensitized Solar Cells ◽  
Scanning Photocurrent Microscopy

Enhancement of the Efficiency of Dye-Sensitized Solar Cells (DSSC) by Utilizing Silver Plasmonic Nanoparticles on Hydrothermally-Treated Titania (TiO2) Photoanode

2014 ◽  
Vol 970 ◽  
pp. 224-227
Author(s):  
Daniel Angelo C. Camacho ◽  
Jenrry T. Daulo
Keyword(s):  
Solar Cells ◽  
Hydrothermal Treatment ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Overall Efficiency ◽  
Photovoltaic Characteristics ◽  
Sensitized Solar Cells ◽  
Scanning Electron

Titanium dioxide (TiO2) has been long used as a photoanode for dye-sensitized solar cells (DSSC) for its high photoreductive capability. One approach towards increasing the performance of TiO2 is to load silver nanoparticles (Ag NP) unto the substrate. In this study, hydrothermal treatment of as-received TiO2 anatase was utilized to fabricate nanostructures that could increase the overall efficiency of DSSC. This hydrothermally-treated TiO2 was loaded with Ag NP via the photodegration of silver nitrate (AgNO3). Characterization of Ag-loaded TiO2 (Ag-TiO2), done using Raman Spectroscopy and Field Emission Scanning Electron Microscopy (FESEM), reveal the anatase characteristic of the samples after hydrothermal treatment, as well as the crystalline structure transformation from tetragonal to monoclinic. Furthermore, upon application of the produced TiO2 samples in DSSC, photovoltaic characteristics were obtained. There was an increase in the current density of all of the Ag-TiO2 samples as compared to the untreated TiO2 sample. The DSSC produced using 0.20 Ag-TiO2 ratio exhibited the highest conversion efficiency, resulting to more than 3000% increase in conversion efficiency from the untreated TiO2 sample.

Adsorption and Photovoltaic Properties of Lac-Color on TiO2 for Dye-Sensitized Solar Cells

2020 ◽  
Vol 20 (3) ◽  
pp. 1989-1992 ◽  
Author(s):  
Tae Young Kim ◽  
Nam Jin Jeon ◽  
Ho Young Jung ◽  
Ji Hyun Kim ◽  
Sung Yong Cho
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Photovoltaic Properties ◽  
Dye Sensitized ◽  
Increasing Temperature ◽  
Photovoltaic Characteristics ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

The adsorption and photovoltaic characteristics of Lac-color on TiO2 thin film for dye-sensitized solar cells were investigated. The adsorption isotherms of Lac-color on TiO2 thin film could be represented by the Langmuir equation. The adsorption capacity of Lac-color on TiO2 thin film increased with increasing temperature. The photovoltaic conversion efficiencies of Lac-color increased with increasing amount of dye adsorbed on TiO2 photo electrode. The energy conversion efficiency of Lac-color was 0.12%.

scholarly journals Optical modeling-assisted characterization of dye-sensitized solar cells using TiO2 nanotube arrays as photoanodes

2014 ◽  
Vol 5 ◽  
pp. 895-902 ◽  
Author(s):  
Jung-Ho Yun ◽  
Il Ku Kim ◽  
Yun Hau Ng ◽  
Lianzhou Wang ◽  
Rose Amal
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Charge Generation ◽  
Dye Sensitized ◽  
Electron Transport Property ◽  
Modelling Analysis ◽  
Initial Charge ◽  
Photovoltaic Characteristics ◽  
Sensitized Solar Cells

Photovoltaic characteristics of dye-sensitized solar cells (DSSCs) using TiO2 nanotube (TNT) arrays as photoanodes were investigated. The TNT arrays were 3.3, 11.5, and 20.6 μm long with the pore diameters of 50, 78.6, and 98.7 nm, respectively. The longest TNT array of 20.6 μm in length showed enhanced photovoltaic performances of 3.87% with significantly increased photocurrent density of 8.26 mA·cm−2. This improvement is attributed to the increased amount of the adsorbed dyes and the improved electron transport property with an increase in TNT length. The initial charge generation rate was improved from 4 × 1021 s−1·cm−3 to 7 × 1021 s−1·cm−3 in DSSCs based on optical modelling analysis. The modelling analysis of optical processes inside TNT-based DSSCs using generalized transfer matrix method (GTMM) revealed that the amount of dye and TNT lengths were critical factors influencing the performance of DSSCs, which is consistent with the experimental results.

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