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dc.contributor.authorHsu, Ying-Yaen_US
dc.contributor.authorSuen, Nian-Tzuen_US
dc.contributor.authorChang, Chung-Chiehen_US
dc.contributor.authorHung, Sung-Fuen_US
dc.contributor.authorChen, Chi-Liangen_US
dc.contributor.authorChan, Ting-Shanen_US
dc.contributor.authorDong, Chung-Lien_US
dc.contributor.authorChan, Chih-Chiehen_US
dc.contributor.authorChen, San-Yuanen_US
dc.contributor.authorChen, Hao Mingen_US
dc.date.accessioned2015-12-02T02:59:39Z-
dc.date.available2015-12-02T02:59:39Z-
dc.date.issued2015-10-14en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsami.5b06872en_US
dc.identifier.urihttp://hdl.handle.net/11536/128413-
dc.description.abstractIn the past decade, inorganic semiconductors have been successfully demonstrated as light absorbers in efficient solar water splitting to generate chemical fuels. Pseudobinary semiconductors Zn1-xCdxS (0 <= x <= 1) have exhibited a superior photocatalytic reactivity of H-2 production from splitting of water by artificial solar irradiation without any metal catalysts. However, most studies had revealed that the extremely high efficiency with an optimal content of Zn1-xCdxS solid solution was determined as a result of elevating the conduction band minimum (CBM) and the width of bandgap. In addition to corresponding band structure and bandgap, the local crystal structure should be taken into account as well to determine its photocatalytic performance. Herein, we demonstrated the correlations between the photocatalytic activity and structural properties that were first studied through synchrotron X-ray diffraction and X-ray absorption spectroscopy. The crystal structure transformed from zinc blende to coexisted phases of major zinc blende and minor wurtzite phases at a critical point. The heterojunction formed by coexistence of zinc blende and wurtzite phases in the Zn1-xCdxS solid solution can significantly improve the separation and migration of photoinduced electron hole pairs. Besides, X-ray absorption spectra and UV-vis spectra revealed that the bandgap of the Zn0.45Cd0.55S sample extended into the region of visible light because of the incorporation of Cd element in the sample. These results provided a significant progress toward the realization of the photoelectrochemical mechanism in heterojunction between zinc blende and wurtzite phases, which can effectively separate the charge-carriers and further suppress their recombination to enhance the photocatalytic reactivity.en_US
dc.language.isoen_USen_US
dc.subjecthydrogen evolution reaction (HER)en_US
dc.subjectzinc-cadmium sulfideen_US
dc.subjectheterojunctionen_US
dc.subjectX-ray absorptionen_US
dc.subjectdensity of states (DOS) and Rietveld structural refinementsen_US
dc.titleHeterojunction of Zinc Blende/Wurtzite in Zn1-xCdxS Solid Solution for Efficient Solar Hydrogen Generation: X-ray Absorption/Diffraction Approachesen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsami.5b06872en_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.issue40en_US
dc.citation.spage22558en_US
dc.citation.epage22569en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.department加速器光源科技與應用學位學程zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.contributor.departmentMaster and Ph.D. Program for Science and Technology of Accelrrator Light Sourceen_US
dc.identifier.wosnumberWOS:000363001500053en_US
dc.citation.woscount0en_US
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