One-step Synthesis of Vertically Aligned Anatase Thornbush-like TiO2Nanowire Arrays on Transparent Conducting Oxides for Solid-State Dye-Sensitized Solar Cells

ChemSusChem ◽  
2013 ◽  
Vol 6 (8) ◽  
pp. 1384-1391 ◽  
Author(s):  
Dong Kyu Roh ◽  
Won Seok Chi ◽  
Sung Hoon Ahn ◽  
Harim Jeon ◽  
Jong Hak Kim
2021 ◽  
Vol 21 (2) ◽  
pp. 557-568
Author(s):  
LIVIU OLTEANU ◽  
RODICA-MARIANA ION ◽  
RALUCA-MARIA STIRBESCU ◽  
SOFIA TEODORESCU ◽  
DORIN-DACIAN LET ◽  
...  

The dye-sensitized solar cells (DSSC) and thin-layer heterojunctional solar cells have attracted much attention as an alternative to relatively expensive silicon-based solar cells. Among the various photosensitizers used to build these cells, porphyrins have proven to be outstanding candidates due to their strong absorption in the visible region and have established basic and peripheral modification methods to adjust their geometry and electronic structures. Due to the improved spectral properties, the electronic spectra of these materials have been extensively studied. In this paper, the information obtained using both ultraviolet-visible (UV-VIS) and Fourier Transform Infrared (FTIR) spectroscopy have been used to evaluate the use of Pd-TPP (palladium-5,10,15,20-tetraphenyl porphyrin) as sensitizer dye on different glass substrate coated with transparent conducting oxides. The electrical characterization and quantum efficiency results, related with Pd-TPP-sensitized heterojunctional supramolecular solar cells, are also highlighted.


2013 ◽  
Vol 712-715 ◽  
pp. 329-332
Author(s):  
Da Long Cheng ◽  
Yu Ching Hsu ◽  
Kuo Sheng Kao ◽  
Hong Jie Su ◽  
Chia Hua Liang ◽  
...  

Transparent conducting oxides (TCO) are commonly used in electrodes of dye-sensitized solar cells (DSSCs). The flexible DSSCs presented in this work was changed to be based on stainless steel (StSt) meshes and the mesoporous TiO2 films were fabricated by electrophoretic deposition (EPD) method which consists of repetitive short-term depositions with intermediate drying. The optimum efficiency was found by changing the TiO2 concentration of EPD solution and the potential difference between the electrodes. The experimental results show that the photovoltaic efficiency (η) of the DSSC with an active size of 1 cm2 is 3.25% under an electric field of 60 V/cm and a TiO2 concentration of EPD solution of 1.0wt%.


Nanoscale ◽  
2014 ◽  
Vol 6 (13) ◽  
pp. 7362-7368 ◽  
Author(s):  
Jung Tae Park ◽  
Jong Hak Kim ◽  
Daeyeon Lee

We present a method for eliminating the negative impact of fogging on dye-sensitized solar cells using superhydrophilic nanoparticle coatings. Superhydrophilic coatings made of spin-coated SiO2 nanoparticles suppress fogging on the photoanodes of solid-state dye-sensitized solar cells and in turn significantly improve the device efficiency under fogging conditions. We believe that this one-step SiO2 colloidal coating is extremely useful for enhancing light harvesting.


2006 ◽  
Vol 90 (5) ◽  
pp. 549-573 ◽  
Author(s):  
Bin Li ◽  
Liduo Wang ◽  
Bonan Kang ◽  
Peng Wang ◽  
Yong Qiu

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 198 ◽  
Author(s):  
Michèle Chevrier ◽  
Alberto Fattori ◽  
Laurent Lasser ◽  
Clément Kotras ◽  
Clémence Rose ◽  
...  

Chlorophyll a derivatives were integrated in “all solid-state” dye sensitized solar cells (DSSCs) with a mesoporous TiO2 electrode and 2′,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene as the hole-transport material. Despite modest power conversion efficiencies (PCEs) between 0.26% and 0.55% achieved for these chlorin dyes, a systematic investigation was carried out in order to elucidate their main limitations. To provide a comprehensive understanding of the parameters (structure, nature of the anchoring group, adsorption …) and their relationship with the PCEs, density functional theory (DFT) calculations, optical and photovoltaic studies and electron paramagnetic resonance analysis exploiting the 4-carboxy-TEMPO spin probe were combined. The recombination kinetics, the frontier molecular orbitals of these DSSCs and the adsorption efficiency onto the TiO2 surface were found to be the key parameters that govern their photovoltaic response.


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