Anatase TiO2 nanorod-decoration for highly efficient photoenergy conversion
- Authors
- Kim, DH; Seong, WM; Park, IJ; Yoo, ES; Shin, SS; Kim, JS; Jung, HS; Lee, S; Hong, KS
- Issue Date
- Dec-2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.5, no.23, pp 11725 - 11732
- Pages
- 8
- Journal Title
- NANOSCALE
- Volume
- 5
- Number
- 23
- Start Page
- 11725
- End Page
- 11732
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147540
- DOI
- 10.1039/c3nr03439a
- ISSN
- 2040-3364
2040-3372
- Abstract
- In recent studies of inorganic materials for energy applications, surface modification processes have been shown to be among the most effective methods to enhance the performance of devices. Here, we demonstrate a facile nano-decoration method which is generally applicable to anatase TiO2 nanostructures, as well as a nano-decorated hierarchical TiO2 nanostructure which improves the energy conversion efficiency of a dye-sensitized solar cell (DSSC). Using a facile sol-gel method, 0-D, 1-D, and 2-D type anatase TiO2 nanostructures were decorated with 200 nm long anatase TiO2 nanorods to create various hierarchical nanostructures. A structural analysis reveals that the branched nanorod has a highly crystalline anatase phase with anisotropic growth in the [001] longitudinal direction. When one of the hierarchical structures, a chestnut bur-like nanostructure, was employed in a dye-sensitized solar cell as a scattering layer, offering increased dye-loading properties, preserving a sufficient level of light-scattering ability and preserving superior charge transport and recombination properties as well, the energy conversion efficiency of the cell improved by 19% (from 7.16% to 9.09%) compared to a cell with a 0-D TiO2 sphere as a scattering layer. This generally applicable anatase nanorod-decorating method offers pot
- Files in This Item
-
Go to Link
- Appears in
Collections - ICT융합공학부 > 응용물리전공 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.