- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
Iranian researchers from Sharif University of Technology, in association with Cambridge University in Britain, successfully fabricated titanium dioxide dye sensitized solar cells (DSSCs).
The solar cells were produced in the form of bi-layer films with different crystalline structures and various morphologies of titanium dioxide nanostructures.
In order to obtain high conversion yield in solar cells, it is necessary to collect ion carriers produced by photons as electrical current before their re-combination. The collection of ion carriers must be carried out significantly faster than the re-combination. A promising solution is to increase the electron emission length in photo-anode electrode made of titanium dioxide nanoparticles with its one-dimensional nanostructures.
Morphology, crystalline structure and optical energy band gap are among the effective parameters on titanium dioxide film in electron transfer rate and the re-combination process of bi-layer DSSCs. Therefore, the researchers systematically studied titanium dioxide dye-sensitized solar cells with single layer and bi-layer film structures with various morphologies and crystalline phases. By measuring the inner resistance of cells, electron life-time, and electron transfer time, they also investigated the modification of their mechanism by using electrochemical impedance spectrometry (EIS).
Results showed that the bi-layer solar cells have higher fill factor rather than single layer cells with the same crystalline structure. In addition, the both single layer and bi-layer solar cells made of titanium dioxide with anatase crystalline structure have higher fill factor and power conversion yield in comparison to the cells consisted of rutile crystalline structure.
Results of the research have been published in September 2012 in Electrochimica Acta, vol. 78. For more information about the detail of the research, visit the full text of the article on pages 384-391 of the same journal.
For more information, please click here
Copyright © Fars News AgencyIf you have a comment, please Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
|Related News Press|
News and information
Graphene makes rubber more rubbery May 23rd, 2016
First single-enzyme method to produce quantum dots revealed: Biological manufacturing process, pioneered by three Lehigh University engineers, produces equivalent quantum dots to those made chemically--but in a much greener, cheaper way May 9th, 2016