The Effect of Calcinations Temperature on the Performance of TiO2 Aggregates-Based Dye Solar Cells (DSCs)

Mohamed, Norani Muti; Siti, Nur Azella Zaine; Bustam, Mohamad Azmi

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Dressing of Mwcnts with TiO₂ Nanoparticles Using Modified Microwave Method, p.228
The Effect of Catalyst on Carbon Nanotubes (CNTs) Synthesized by Catalytic Chemical Vapor Deposition (CVD) Technique, p.232
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Large-Area Synthesis and Microstructural Investigations of Silicon Nanowires and Te/Bi₂Te₃-Si Core-Shell Structures, p.243
The Effect of Calcinations Temperature on the Performance of TiO₂ Aggregates-Based Dye Solar Cells (DSCs), p.248
The Effect of Nanoseed Concentration on the Aspect Ratio of Gold Nanorod, p.254
Butane Sensing Property of Si-ZnO Nanowires p-n Junction, p.260
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Carbon Nanotubes Based Mixed Matrix Membrane for Gas Separation, p.272

Home > Advanced Materials Research > Nanomaterials > The Effect of Calcinations Temperature on the...

Paper Title:

The Effect of Calcinations Temperature on the Performance of TiO₂ Aggregates-Based Dye Solar Cells (DSCs)

Periodical	Advanced Materials Research (Volume 364)
Main Theme	Nanomaterials
Edited by	Zainal Arifin Ahmad, Muhd Ambar Yarmo, Fauziah Haji Abdul Aziz, Meor Yusoff Meor Sulaiman, Badrol Ahmad, Khairul Nizar Ismail, Abdul Rashid Jamaludin, Muhd. Azwadi Sulaiman and Mohd Fariz Ab Rahman
Pages	248-253
DOI	10.4028/www.scientific.net/AMR.364.248
Citation	Nur Azella Zaine Siti et al., 2011, Advanced Materials Research, 364, 248
Online since	October, 2011
Authors	Nur Azella Zaine Siti, Norani Muti Mohamed, Mohamad Azmi Bustam
Keywords	Aggregates, Dye Solar Cells (DSC), TiO₂
Price	US$ 28,-

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Abstract

Development of novel TiO₂ nanostructures as the photo-electrode material is one possible solution to control the competition between electron generation and recombination which is the main constraint of obtaining higher conversion efficiency of dye solar cell (DSC). By manipulating the synthesis process, desired TiO₂ nanostructure with specific properties can be obtained to enhance solar energy conversion efficiency. In this study, the effect of calcinations temperature towards physico-chemical properties of synthesized TiO₂ aggregates and their influence on overall light conversion efficiency of DSC has been investigated. TiO₂ aggregates (0.45 µm) composing of nanocrystallites (10-40 nm), were synthesized through hydrolysis of dilute titanium alkoxide in ethanol. The synthesized samples have been characterized using FESEM, XRD and UV-Vis spectroscopy. DSCs were then assembled and evaluated using solar simulator under 100 mW/cm² illuminations. The size of nanocrystallites was found to increase with increasing calcinations temperature where the 500°C produced the 21 nm sized nanocrystallites, the optimum size for highest absorption of the dye resulting in the highest efficiency. TiO₂ aggregates-based DSC demonstrated better performance compared to nanoparticles (P-25)-based DSC. This is attributed to the enhanced scattering introduced by micron-sized aggregates.