Options
Synthesis of TiO2 and TiO2-SiO2, Carbon-TiO2 Composites by Evaporation Induced Self- assembly and Their Applications in Dye-sensitized Solar Cell
Date Issued
2014
Date
2014
Author(s)
Wu, Min-Tsung
Abstract
The size tunable TiO2 sphere, SiO2-TiO2 composite and C-TiO2 composite were synthesized via a simple evaporation induced self-assembly (EISA) process. First, We report a simple method for the preparation of the size tunable TiO2 sphere from titanium (IV) isopropoxide and nonionic surfactant colloids (triton X-100) as the template. The synthetic procedure is easy to control by changing the Ti/H2O ratios in the process of evaporation-induced self-assembly. We are able to tune the size of sphere TiO2 particles with diameters of 500 nm, 700 nm, and 1100 nm, named as TiO2-500, TiO2-700 and TiO2-1100. They are suitable for the fabrication of DSSCs with a comparable efficiency to the commercial photocatalyst P25. The three different TiO2 sphere size were applied as a scattering overlayer on a transparent nanocrystalline TiO2 film, bi-layered dye-sensitized solar cells (DSSCs) have been fabricated.
In second part, SiO2-TiO2 composite has been reported, which uses nonionic surfactant colloids (triton X-100) as the template as a template, a titanium (IV) isopropoxide and Tetraethoxysilane as a titanium and silica source by evaporation-induced self-assembly. The SiO2-TiO2 composite can be easily shaped. The synthesized SiO2-TiO2 composite were then applied as the as a scattering overlayer on a transparent nanocrystalline TiO2 film, bi-layered dye-sensitized solar cells (DSSCs) have been fabricated. As a result the photovoltaic conversion efficiency (η) of DSSC was improved with our materials. In addition, we synthetize C-TiO2 composite by the same method. It has been investigated as a counter electrode for dye-sensitized solar cells.
In second part, SiO2-TiO2 composite has been reported, which uses nonionic surfactant colloids (triton X-100) as the template as a template, a titanium (IV) isopropoxide and Tetraethoxysilane as a titanium and silica source by evaporation-induced self-assembly. The SiO2-TiO2 composite can be easily shaped. The synthesized SiO2-TiO2 composite were then applied as the as a scattering overlayer on a transparent nanocrystalline TiO2 film, bi-layered dye-sensitized solar cells (DSSCs) have been fabricated. As a result the photovoltaic conversion efficiency (η) of DSSC was improved with our materials. In addition, we synthetize C-TiO2 composite by the same method. It has been investigated as a counter electrode for dye-sensitized solar cells.
Subjects
利用蒸發誘導式自組裝法
染敏化太陽能電池
二氧化鈦
SDGs
Type
thesis
File(s)
No Thumbnail Available
Name
ntu-103-D97223129-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):666ad529ef93fc143c5ca7d6146032c5