PREPARATION OF NANO CRYSTALLINE TIO2 MESOPOROUS PARTICLE USING ACID CATALYST BY SOL GEL METHOD FOR APPLICATION OF DYE SENSITIZED SOLAR CELL PHOTOELECTRODE
Dye sensitized solar cell (DSSC) is a new generation solar cells which utilizing the principle of photoelectrochemical, where the absorption of light by dyesensitized and the generation and electron transfer occurs through inorganic semiconductors as photo electrode layer. The layer has a functio...
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| Format: | Theses |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/41040 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Dye sensitized solar cell (DSSC) is a new generation solar cells which utilizing
the principle of photoelectrochemical, where the absorption of light by dyesensitized
and the generation and electron transfer occurs through inorganic
semiconductors as photo electrode layer. The layer has a function as media of
dyes collector and a porous membrane for redox couples diffusion.
The research aim is the preparation of nano crystalline TiO2 mesoporous particles
for application of dye sensitized solar cell photoelectrode through sol gel method.
Titanium tetra isopropoxide (TTIP) as a precursor prepared by reaction between
Titanium (IV) chloride (TiCl4) with isopropyl alcohol (IPA) in concentrations
varied of 0.3 M, 0.5 M and 1.5 M. The sol gel process employed at around 60 oC
using tert-butanol as solvent and acetic acid as ligand to stabilise the reaction. In
this investigation, CH3COOH and HCl were applied as a catalyst with various of
volume ratio of CH3COOH/HCl are 2:0 1:1 and 0:2. The effect of catalyst and
precursor concentration on the morphology and crystal structure of TiO2 was
analyzed. The calcination of TiO2 powder applied at 500oC for 2 h.
The results of the characterization of X-Ray Diffraction (XRD) indicates that TiO2
particles produced are nano crystalline with crystal structure anatase for catalyst
ratio of 2:0 and anatase/rutile for catalyst ratio of 1:1 and 0:2. The particle
morphology are spherical and mesoporous. The uniform particles and dispersed
was obtained at TTIP concentration of 0.3 M
The average particle size were 90nm, (> 200nm) and 3?m for the use of catalysts
CH3COOH, CH3COOH/HCl and HCl respectively. The TiO2 particle has a wide
band gap of 3.65 to 3.71 eV and this range is suitable for applied as
photoelectroda materials.The optical properties of TiO2 photoelectrode have light
absorption ability in the wavelength region of the ultraviolet, visible light and
infrared red
The characteristics of I-V curve of 0.48 cm2 sized cells were measured using Sun
Simulator Oriel AM1.5 with Xenon light source and the light intensity of 50
mWatt/cm2. The best efficiency was resulted by the solar cells which applied of
nano crystalline TiO2 based on acetic acid catalyst as photoelectrode material, that
is 0,5% |
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