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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 7
BKCSDE 33(7)
July 20, 2012

Title	One-Dimensional Core/Shell Structured TiO₂/ZnO Heterojunction for Improved Photoelectrochemical Performance
Author	In Ae Ji, Min-Joon Park, Jin-Young Jung, Mi Jin Choi, Yong-Woo Lee, Jung-Ho Lee, Jin Ho Bang*
Keywords	TiO2/ZnO heterojunction, Photoelectrochemical water splitting, Atomic layer deposition, Semiconductor- sensitized solar cell
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.
Page	2200 - 2206
Full Text	PDF / Supporting Information

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