scholarly journals Facile Preparation of TiO2Nanobranch/Nanoparticle Hybrid Architecture with Enhanced Light Harvesting Properties for Dye-Sensitized Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Ju Seong Kim ◽  
Seong Sik Shin ◽  
Hyun Soo Han ◽  
Sun Shin ◽  
Jae Ho Suk ◽  
...  
Keyword(s):  
Solar Cell ◽  
Surface Area ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Dye Sensitized Solar Cell ◽  
Charge Collection ◽  
Phase Method ◽  
Hybrid Architecture ◽  
Dye Sensitized

We report TiO2nanobranches/nanoparticles (NBN) hybrid architectures that can be synthesized by a facile solution phase method. The hybrid architecture simultaneously improves light harvesting and charge collection performances for a dye-sensitized solar cell. First, TiO2nanorods with a trunk length of 2 μm were grown on a fluorine-doped tin oxide (FTO)/glass substrate, and then nanobranches and nanoparticles were deposited on the nanorods’ trunks through a solution method using an aqueous TiCl3solution at 80°C. The relative amount of nanobranches and nanoparticles can be controlled by multiplying the number of TiCl3treatments to maximize the amount of surface area. We found that the resultant TiO2NBN hybrid architecture greatly improves the amount of dye adsorption (five times compared to bare nanorods) due to the enhanced surface area, while maintaining a fast charge collection, leading to a three times higher current density and thus tripling the maximum power conversion efficiency for a dye-sensitized solar cell.

scholarly journals Sol Gel Synthesized Nanosilica as Photoanode Material for Dye Sensitized Solar Cells (DSSCs) System

2014 ◽  
Vol 625 ◽  
pp. 110-113
Author(s):  
Stephanie Lau Chai Tying ◽  
Coswald Stephen Sipaut ◽  
Jedol Dayou ◽  
Rachel Fran Mansa
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Band Gap ◽  
Surface Area ◽  
High Surface ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) have been extensively studied due to their promising potential for high efficiency, low production cost and eco-friendly production. The photoanode of DSSCs is traditionally composed of randomly packed TiO2 nanoparticles which have large specific surface area and suitable band gap (3.2 eV) for the effective injection of electrons from the dye molecules to the semiconductor. However, its high surface charge recombination rate accounts for its low efficiency. Alternatively, silica which is chemically inert, thermally stable, high surface area, and inexpensive can be used to substitute TiO2 as photoanode material. However, bulk silica has a wide band gap of 8.9 eV and its band gap need to be narrowed in order to use it as photoanode materials. Thus, in this study, the effect of nanosilica photoanode and its particle size on the performance of dye sensitized solar cell are investigated and characterized. The result is then compared with the fumed silica and conventional TiO2 DSSCs. Although the results shows that photon-electron conversion is inferior compared to TiO2 photoanode, it has a great potential as the fabrication cost is low and more environmental friendly.Keywords : Dye Sensitized Solar Cell, Photoanode material, Nanosilica, Sol gel synthesis

Mesophase Ordering of TiO2 Film with High Surface Area and Strong Light Harvesting for Dye-Sensitized Solar Cell

2010 ◽  
Vol 2 (7) ◽  
pp. 1844-1850 ◽  
Author(s):  
S. Agarwala ◽  
M. Kevin ◽  
A. S. W. Wong ◽  
C. K. N. Peh ◽  
V. Thavasi ◽  
...  
Keyword(s):  
Solar Cell ◽  
Surface Area ◽  
Tio2 Film ◽  
Light Harvesting ◽  
High Surface ◽  
High Surface Area ◽  
Dye Sensitized Solar Cell ◽  
Strong Light ◽  
Dye Sensitized

Highly efficient light harvesting ruthenium sensitizers for dye-sensitized solar cells featuring triphenylamine donor antennas

2014 ◽  
Vol 2 (14) ◽  
pp. 4945-4953 ◽  
Author(s):  
Kun Cao ◽  
Jianfeng Lu ◽  
Jin Cui ◽  
Yan Shen ◽  
Wei Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Ruthenium complexes featuring triphenylamine donor antennas boost dye-sensitized solar cell devices' power conversion efficiency close to 11%.

Highly efficient dye-sensitized solar cells based on a ruthenium sensitizer bearing a hexylthiophene modified terpyridine ligand

2016 ◽  
Vol 4 (5) ◽  
pp. 1762-1770 ◽  
Author(s):  
Hironobu Ozawa ◽  
Takahito Sugiura ◽  
Takahiro Kuroda ◽  
Kouya Nozawa ◽  
Hironori Arakawa
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Electrolyte Composition ◽  
Dye Sensitized Solar Cell ◽  
High Conversion Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

An extremely high conversion efficiency (11.9%) can be achieved for a dye-sensitized solar cell with a ruthenium sensitizer (TUS-38) by optimizing the dye-adsorption conditions and the electrolyte composition.

Photoanode characteristics of dye-sensitized solar cell containing TiO2 layers with different crystalline orientations

2009 ◽  
Vol 24 (4) ◽  
pp. 1417-1421 ◽  
Author(s):  
Mamiko Kawakita ◽  
Jin Kawakita ◽  
Tetsuo Uchikoshi ◽  
Yoshio Sakka
Keyword(s):  
Solar Cell ◽  
Electrochemical Reaction ◽  
Dye Adsorption ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Photoelectric Conversion Efficiency ◽  
Electrochemical Characteristics ◽  
Cathodic Reaction ◽  
Photoelectric Conversion ◽  
Dye Sensitized

The influence of the crystalline orientation of the TiO2 photoanode on the photo-electrochemical characteristics was investigated to reveal the primary factors responsible for improving the photoelectric conversion efficiency of a dye-sensitized solar cell. It was observed that the photocurrent depended on the plane orientation, whereas the dependence of the photopotential on the open circuit was almost constant. The rate of the photoanodic reaction was attributed to the dye adsorption, depending on the surface energy of each oriented plane of the TiO2. The cathodic reaction on TiO2 during open circuit is likely to determine the rate of the entire electrochemical reaction.

Fabricate Dye-Sensitized Solar Cell with Electrospining

2011 ◽  
Vol 335-336 ◽  
pp. 1117-1120
Author(s):  
Yun Yun Chu ◽  
Yu Chou Chao
Keyword(s):  
Solar Cell ◽  
Electron Transport ◽  
High Surface ◽  
High Surface Area ◽  
Dye Adsorption ◽  
Dye Sensitized Solar Cell ◽  
High Electron ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Viable Method

Dye adsorption on Ti02and electron transport in Ti02film are the two critical factors in determining efficiency of the the dye sensitized solar cell (DSSC). Increasing dye adsorption which increases the light harvesting is usually achieved by using nanoporous or nanoparticle Ti02films. Electron transport is determined by the inter-particle resistance of Ti02film. Electrospinning is a viable method for forming porous structure materials with high surface area. In this study, it was found that electrospinning is able to achieve good solar cell performance due to the high electron transport caused by the pores in the Ti02film.

Kinetics of dye regeneration in liquid electrolyte unveils efficiency of 10.5% in dye-sensitized solar cells

2018 ◽  
Vol 6 (42) ◽  
pp. 11444-11456 ◽  
Author(s):  
Jonnadula Venkata Suman Krishna ◽  
Narra Vamsi Krishna ◽  
Towhid H. Chowdhury ◽  
Suryaprakash Singh ◽  
Idriss Bedja ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Liquid Electrolyte ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
Sensitized Solar Cells ◽  
Kinetics Of

We have designed and synthesised four novel porphyrin sensitizers for dye-sensitized solar cell applications and shown power conversion efficiency of 10.5%.

Correlating cobalt redox couples to photovoltage in the dye-sensitized solar cell

2018 ◽  
Vol 47 (34) ◽  
pp. 11942-11952 ◽  
Author(s):  
Kitty Y. Chen ◽  
Phil A. Schauer ◽  
Brian O. Patrick ◽  
Curtis P. Berlinguette
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Redox Potential ◽  
Linear Correlation ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Redox Mediators ◽  
Dye Sensitized ◽  
Redox Couples ◽  
Sensitized Solar Cells

Two sets of structurally analogous Co(iii/ii)-based redox mediators were incorporated in the dye-sensitized solar cells and a linear correlation was demonstrated between redox potential and photovoltage.

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