Photoelectrochemical Behavior of Nanocrystalline Titanium Oxide Sensitized with Nanoparticles
Date Issued
2005
Date
2005
Author(s)
Chen, Kung-Shih
DOI
zh-TW
Abstract
The dye-sensitized TiO2 cell consists of a light-converting anode comprising a thin film of sintered mesoporous TiO2 deposited on electrically conducting glass. The TiO2 particles are covered with sensitizing dye and surrounded by an electrolyte containing a suitable redox couple. A second piece of conducting glass coated with a catalytic amount of platinum forms the cathode. Using inorganic nanoparticles (such as CdS, CdSe, CdTe, etc.) as sensitizers implies several advantages as compared to organic dyes: Inorganic nanoparticles usually have broader absorption spectral region for light harvesting, and usually were more stable against photo-degradation.
Three different approaches were used for nanoparticle sensitizing: 1. Nanoparticles were first synthesized separately with the desired size and then subsequently adsorbed them onto the TiO2 photoanode surface. 2. Nanoparticles were prepared and deposited in situ on the TiO2 photoanode in a single step. 3. Nanoparticles were first synthesized and mixed with dispersed nanocrytalline TiO2 particles, then the photoanode were fabricated using the “hydraulic pressing route”. The photoelectrochemical behaviors of these photoanodes were measured under simulated sunlight.
Subjects
染料敏化
半導體奈米顆粒
太陽能電池
dye-sensitized
semiconductor nanoparticles
solar cells
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-94-R92223070-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):b5090003ea8c203fd4b7946d6765c097