| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schwarz, R.
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Topics
Publications (15/15 displayed)
- 2022Spin-induced asymmetry reaction - The formation of asymmetric carbon by electropolymerizationcitations
- 2014Tungsten trioxide nanostructured electrodes for organic dye sensitised solar cellscitations
- 2013Optical properties of lead-free NKN films from transmission and spectral ellipsometrycitations
- 2012Complex dielectric function in lead-free NKN filmscitations
- 2012Transfer characteristic of zinc nitride based thin film transistorscitations
- 2012Development of lead-free materials for piezoelectric energy harvestingcitations
- 2012Secondary electron emission yield (SEY) in amorphous and graphitic carbon films prepared by PLDcitations
- 2010Local electromechanical properties of ZnO thin films and microcrystals
- 2010Optical properties of TiO(2) thin films prepared by chemical spray pyrolysis from aqueous solutionscitations
- 2010Local piezoelectric properties of ZnO thin films prepared by RF-plasma-assisted pulsed-laser deposition methodcitations
- 2010RF-plasma assisted PLD growth of Zn3N2 thin filmscitations
- 2009Morphological and optical properties of silicon thin films by PLDcitations
- 2008Study of trap states in zinc oxide (ZnO) thin films for electronic applicationscitations
- 2007ZnO films grown by laser ablation with and without oxygen CVDcitations
- 2007Photoinduced excess carrier dynamics in PLD-grown ZnOcitations
Places of action
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article
Tungsten trioxide nanostructured electrodes for organic dye sensitised solar cells
Abstract
Tungsten trioxide (WO3) nanospheres with diameter ranging from 10 nm to 500 nm were synthesised by a facile thermal oxidation process. By resistively heating metallic tungsten in oxygen atmosphere, WO3 nanoparticles were produced in high yield. Optical, compositional, morphological and structural studies were performed by UV-VIS-NIR spectrophotometry, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and X-ray diffraction (XRD) studies. XPS studies revealed the formation of tungsten trioxide with oxygen deficiency. Analysis of the particle size (diameter) distribution of the as-deposited samples obtained from SEM micrograph exhibited a Gaussian-type distribution centred around 178 nm and characterised by a half width of 98.3 nm. As deduced from XRD analysis, the as-prepared tungsten trioxide (WO3) nanoparticles were polycrystalline in nature and crystallised in the monoclinic phase. Electrophoretic deposition (EPD) was applied in coating the synthesised tungsten oxide nanoparticles onto fluorine doped tin oxide (FTO) coated quartz substrates for the fabrication of dye-sensitised solar cells (DSSC), with henna (Lawsonia inermis) as the natural organic dye. Nanoparticle suspension in double distilled water was used in the EPD process with an optimal electric field of 20 Vcm(-1) at a current density of 1 mA/cm(2). DSSCs developed using these films were tested through the measurement of their current density-voltage (J-V) and spectral photocurrent characteristics. A maximum IPCE of about 32% was obtained at around 450 nm.