Laser-Induced Control of TiO2 Porosity for Enhanced Photovoltaic Behavior

Porosity values between 0.12 and 0.40 are achieved in a controllable way for TiO2 electrodes in dye‐sensitized solar cells by irradiation with a pulsed Nd:YAG laser at 1064 nm. Whereas the electron lifetime and diffusion distance increase with reduced porosity, the amount of adsorbed dyes remains al...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2011-09, Vol.23 (34), p.3974-3978
Main Authors: Yoon, Junghwan, Jin, Minhea, Lee, Myeongkyu
Format: Article
Language:English
Subjects:
Coloring Agents - chemistry
dye-sensitized solar cell
Electrodes
laser
Lasers
Nanoparticles - chemistry
Porosity
porosity control
Solar Energy
TiO2 electrode
Titanium - chemistry
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Summary:Porosity values between 0.12 and 0.40 are achieved in a controllable way for TiO2 electrodes in dye‐sensitized solar cells by irradiation with a pulsed Nd:YAG laser at 1064 nm. Whereas the electron lifetime and diffusion distance increase with reduced porosity, the amount of adsorbed dyes remains almost constant. This greatly enhances the photocurrent density and energy conversion efficiency of the solar cell.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201101837