Dye-sensitized solid-state photovoltaic cells: Suppression of electron-hole recombination by deposition of the dye on a thin insulating film in contact with a semiconductor

2001 ◽  
Vol 30 (8) ◽  
pp. 992-996 ◽  
Author(s):  
K. Tennakone ◽  
V. P. S. Perera ◽  
I. R. M. Kottegoda ◽  
L. A. A. De Silva ◽  
G. R. R. A. Kumara ◽  
...  
Keyword(s):  
Solid State ◽  
Photovoltaic Cells ◽  
Electron Hole ◽  
Dye Sensitized ◽  
Hole Recombination

The effect of particle size and conductivity of CuI layer on the performance of solid-state dye-sensitized photovoltaic cells

2005 ◽  
Vol 5 (2) ◽  
pp. 149-151 ◽  
Author(s):  
Akinori Konno ◽  
Tatsuya Kitagawa ◽  
Hiroaki Kida ◽  
G.R. Asoka Kumara ◽  
Kirthi Tennakone
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Photovoltaic Cells ◽  
Dye Sensitized ◽  
Effect Of Particle Size

scholarly journals Molybdenum trioxide thin film recombination barrier layers for dye sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (77) ◽  
pp. 48853-48860 ◽  
Author(s):  
Aditya Ashok ◽  
S. N. Vijayaraghavan ◽  
Shantikumar V. Nair ◽  
Mariyappan Shanmugam
Keyword(s):  
Thin Film ◽  
Charge Transport ◽  
Barrier Layer ◽  
Molybdenum Trioxide ◽  
Dye Sensitized Solar Cells ◽  
Electron Hole ◽  
Barrier Layers ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Hole Recombination

MoO3 thin film recombination barrier layer suppresses electron–hole recombination at the FTO–TiO2 interface and facilitates charge transport.

Dye-Sensitized Solid-State Photovoltaic Cells Based on Dye Multilayer−Semiconductor Nanostructures

2003 ◽  
Vol 107 (50) ◽  
pp. 13758-13761 ◽  
Author(s):  
V. P. S. Perera ◽  
P. K. D. D. P. Pitigala ◽  
P. V. V. Jayaweera ◽  
K. M. P. Bandaranayake ◽  
K. Tennakone
Keyword(s):  
Solid State ◽  
Photovoltaic Cells ◽  
Semiconductor Nanostructures ◽  
Dye Sensitized

scholarly journals Improvement of Dye Solar Cell Efficiency by Photoanode Posttreatment

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Tanja Ivanovska ◽  
Zoran Saponjic ◽  
Marija Radoicic ◽  
Luca Ortolani ◽  
Vittorio Morandi ◽  
...  
Keyword(s):  
Dye Sensitized Solar Cells ◽  
Trap States ◽  
Electron Recombination ◽  
Electron Hole ◽  
Surface Trap ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Hole Recombination

The basic concept for efficiency improvement in dye-sensitized solar cells (DSSC) is limiting the electron-hole recombination. One way to approach the problem is to improve the photogenerated charge carriers lifetime and consequently reduce their recombination probability. We are reporting on a facile posttreatment of the mesoporous photoanode by using a colloidal solution of TiO2nanoparticles. We have investigated the outcome of the different sintering temperature of the posttreated photoanodes on their morphology as well as on the conversion efficiency of the DSSC. The DSSCs composed of posttreated photoanodes at 450°C showed an increase inJSCand consequently an increase in efficiency of 10%. Investigations were made to determine the electron recombination via the electrolyte by the OCVD technique. We found that the posttreatment has the effect of reducing the surface trap states and thus increases the electron lifetime, which is responsible for the increase of the overall cell efficiency.

PtSn/GO Co-Catalyst for Quasi-Solid-State Dye Sensitized Solar Cells

2018 ◽  
Vol 283 ◽  
pp. 55-64
Author(s):  
Voranuch Somsongkul ◽  
Surassawatee Jamikorn ◽  
Chanu Photiphitak ◽  
Thapanee Sarakonsri ◽  
Viratchara Laokawee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Pt Catalyst ◽  
Counter Electrodes ◽  
Electron Hole ◽  
Co Catalyst ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye sensitized solar cells (DSSCs) consist of photoanodes (dye adsorbed porous semiconductor film), electrolytes and counter electrodes. Nanostructured materials play important parts in both the photoanodes and the counter electrodes, while dyes are there to absorb photons and generate electron-hole pairs and electrolytes are there to transfer electrons from the photoanodes to the counter electrodes. In this study, to enhance light absorption and minimize electron-hole recombination, Ag nanoparticles and MgO nanolayer were coated on TiO2, respectively. To enable a long lifetime, i.e. avoiding liquid electrolyte leakage, quasi-solid-state (QSS) DSSCs were fabricated. PtSn nanoparticles were prepared by a simple chemical reduction method on graphene oxide (GO) to compare with conventional Pt catalyst on FTO substrates as counter electrodes. An average efficiency of the QSS DSSCs with PtSn/GO co-catalysts was found to outperform that of the QSS DSSCs with conventional Pt catalyst. A mixed microstructure of the PtSn/GO co-catalyst was observed. Although, PtSn2 and Pt2Sn3 phases were suggested by XRD, in a small region observed by EDX-STEM, it was found that C, O and Si were distributed uniformly on the graphene oxide film. Pt was also distributed uniformly, but the signal was low so there were only a few X-Ray counts across the image. There was no sign of Pt being concentrated in the particles. However, Sn was found to be concentrated in the particles without any other elements.

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