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One-Dimensional Core/Shell Structured TiO2/ZnO Heterojunction for Improved Photoelectrochemical Performance

Title
One-Dimensional Core/Shell Structured TiO2/ZnO Heterojunction for Improved Photoelectrochemical Performance
Other Titles
Shell Structured TiO2
Author
방진호
Keywords
TiO2/ZnO heterojunction; Photoelectrochemical water splitting; Atomic layer deposition; Semiconductor-sensitized solar cell
Issue Date
2012-07
Publisher
Korean Chemical SOC
Citation
Bulletin of the Korean Chemical Society, 2012, 33(7), P.2200-2206
Abstract
One-dimensional TiO2 array grown on optically transparent electrode holds a promise as a photoelectrode for photoelectrochemical water splitting; however, its crystal structure is rutile, imposing constraints on the potent use of this nanostructure. To address this issue, a heterojunction with type-II band alignment was fabricated using atomic layer deposition (ALD) technique. One-dimensional core/shell structured TiO2/ZnO heterojunction was superior to TiO2 in the photoelectrochemical water splitting because of better charge separation and more favorable Fermi level. The heterojunction also possesses better light scattering property, which turned out to be beneficial even for improving the photoelectrochemical performance of semiconductor-sensitized solar cell.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCGMCS_2012_v33n7_2200
ISSN
0253-2964
DOI
10.5012/bkcs.2012.33.7.2200
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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