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- Title
Facile fabrication of sub-100 nm mesoscale inverse opal films and their application in dye-sensitized solar cell electrodes.
- Authors
Jung Woo Lee; Lee, Jaemin; Cheolho Kim; Chang-Yeol Cho; Jun Hyuk Moon
- Abstract
Inverse opal (IO) films with meso-porous structures hold promise as high-performance electrodes for various photo electrochemical devices because of their high specific area as well as their fully connected pore structure. A great challenge to their use is obtaining an intact film of meso-scale colloidal crystals as a template. Here, using the plate-sliding coating method coupled with hot air flow, we successfully deposited mesoscale colloidal crystals onto the substrate. A TiO2 meso-scale IO (meso-IO) with 70 nm pores was then successfully fabricated via atomic layer deposition of TiO2 and subsequent removal of the template. As a photo electrochemical electrode, the meso-IO structure exhibits enhanced charge transport properties as well as a high specific area. Moreover, dye-sensitized solar cells fabricated using the meso-IO electrode exhibit a higher photocurrent and cell efficiency than a cell constructed using a conventional TiO2 nano-particle electrode. This meso-IO film provides a new platform for developing electrodes for use in various energy storage and conversion devices.
- Subjects
DYE-sensitized solar cells; MESOPOROUS materials; COLLOIDAL crystals; ATOMIC layer deposition; ELECTROCHEMICAL electrodes
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep06804