Probing energy losses from dye desorption in cobalt complex-based dye-sensitized solar cells

2018 ◽  
Vol 20 (9) ◽  
pp. 6698-6707 ◽  
Author(s):  
Yan Zhang ◽  
Yungen Wu ◽  
Zhe Sun ◽  
Yanan Kang ◽  
Tianyang Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Self Assembly ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Energy Losses ◽  
Dye Sensitized ◽  
Charge Loss ◽  
Sensitized Solar Cells

Self-assembly of sensitizers at TiO2 surfaces is crucial to reduce charge loss in cobalt complex-based DSSCs.

Role of Pristine and Acid-Functionalized Fullerene on Breaking Dye Aggregates and its Impact on the Efficiency of Solar Cells

2014 ◽  
Vol 67 (5) ◽  
pp. 819
Author(s):  
Syed Mujtaba Shah ◽  
Zafar Iqbal ◽  
Muzaffar Iqbal ◽  
Naila Shahzad ◽  
Amina Hana ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Self Assembly ◽  
Zno Nanorods ◽  
Active Material ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Transmission Electron ◽  
Sensitized Solar Cells

Porphyrin dyes have an inherent tendency to aggregate. This leads to a self-quenching phenomenon that hinders electron transfer to the conduction band of semiconductors in dye-sensitized solar cells. Self-quenching adversely affects the efficiency of solar cells. Here, we report the interaction of porphyrin with pristine and acid-functionalized fullerene molecules on the surface of ZnO nanoparticles under chemisorbed conditions. Chemisorption of porphyrin only on ZnO nanoparticles instigates aggregation of the porphyrin molecules. These aggregates can be effectively broken by chemisorbing fullerene molecules on the surface of the ZnO nanoparticles. This is due to self-assembly formation processes because of porphyrin–fullerene interactions. The nanohybrid material, consisting of ZnO nanorods, acid-functionalized porphyrin, and fullerene derivatives, was characterized by UV–visible spectroscopy, fourier transform infrared spectroscopy, fluorescence spectroscopy, and transmission electron microscopy. The material generates better performing dye-sensitized solar cells when compared with those fabricated from porphyrin-based photo-active material.

scholarly journals Acid Treatment of Titania Pastes to Create Scattering Layers in Dye-Sensitized Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Trystan Watson ◽  
Cecile Charbonneau ◽  
Daniel Bryant ◽  
David Worsley
Keyword(s):  
Solar Cells ◽  
Self Assembly ◽  
Dye Sensitized Solar Cells ◽  
Transparent Film ◽  
Similar Function ◽  
Short Term ◽  
Acid Pretreatment ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In dye-sensitized solar cells (DSC) scattering layers are used to increase the path length of light incident on the TiO2film. This is typically achieved by the deposition of an additional TiO2layer on top of an existing transparent film and designed to trap light. In this work we show that a simple acid pretreatment can lead to the formation of a scattering “skin” on the surface of a single TiO2film performing a similar function to a scattering layer without any additional depositions. This is important in increasing manufacturing throughput for DSCs as further TiO2depositions require additional materials and heat treatment. The pretreatment leads to self-assembly of a scattering layer of TiO2which covers the surface on short-term immersion (<30 min) and penetrates the bulk layer upon longer immersion. The method has been shown to increase the efficiency of the device by 20%.

Fabrication of porous TiO2 films using a spongy replica prepared by layer-by-layer self-assembly method: Application to dye-sensitized solar cells

2006 ◽  
Vol 499 (1-2) ◽  
pp. 396-401 ◽  
Author(s):  
Yosuke Tsuge ◽  
Kohei Inokuchi ◽  
Katsuhiro Onozuka ◽  
Ohno Shingo ◽  
Shinichiro Sugi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Self Assembly ◽  
Dye Sensitized Solar Cells ◽  
Layer By Layer ◽  
Tio2 Films ◽  
Porous Tio2 ◽  
Dye Sensitized ◽  
Assembly Method ◽  
Sensitized Solar Cells

scholarly journals A cobalt complex redox shuttle for dye-sensitized solar cells with high open-circuit potentials

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Jun-Ho Yum ◽  
Etienne Baranoff ◽  
Florian Kessler ◽  
Thomas Moehl ◽  
Shahzada Ahmad ◽  
...  
Keyword(s):  
Solar Cells ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Redox Shuttle ◽  
Sensitized Solar Cells

scholarly journals Low Cost Ferritic Stainless Steel in Dye Sensitized Solar Cells with Cobalt Complex Electrolyte

2014 ◽  
Vol 161 (3) ◽  
pp. H138-H143 ◽  
Author(s):  
Kati Miettunen ◽  
Sami Jouttijärvi ◽  
Roger Jiang ◽  
Tapio Saukkonen ◽  
Jyrki Romu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Solar Cells ◽  
Ferritic Stainless Steel ◽  
Low Cost ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Ytterbium oxide nanodots via block copolymer self-assembly and their efficacy to dye-sensitized solar cells

2016 ◽  
Vol 364 ◽  
pp. 573-578 ◽  
Author(s):  
Kwang-Won Park ◽  
Sungwoo Ahn ◽  
Sung-Hwan Lim ◽  
Ming Hao Jin ◽  
Jeemin Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Block Copolymer ◽  
Self Assembly ◽  
Dye Sensitized Solar Cells ◽  
Ytterbium Oxide ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Do Counter Electrodes on Metal Substrates Work with Cobalt Complex Based Electrolyte in Dye Sensitized Solar Cells?

2012 ◽  
Vol 160 (2) ◽  
pp. H132-H137 ◽  
Author(s):  
Kati Miettunen ◽  
Tapio Saukkonen ◽  
Xiaoe Li ◽  
ChunHung Law ◽  
Yeo Kee Sheng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Metal Substrates ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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