Architectural transformation of the nanoparticle superstructures induced by ultraviolet light irradiation and their application in photoelectrochemical switch devices
The studies of the self-assembly processes of nanoparticles (NPs) will benefit the understanding of both the fundamental properties of nanomaterials and the bottom-up fabrication technologies at nanoscales. The NPs can self-assemble into complex microscale structures, which have been reported and at...
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Published in | Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 1; no. 10; pp. 1926 - 1932 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
01.01.2013
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Subjects | |
Online Access | Get full text |
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Summary: | The studies of the self-assembly processes of nanoparticles (NPs) will benefit the understanding of both the fundamental properties of nanomaterials and the bottom-up fabrication technologies at nanoscales. The NPs can self-assemble into complex microscale structures, which have been reported and attracted increasing attention in recent years. In this paper, a kind of bowknot-shaped structure formed from the individual (CdS)/CdTe NPs has been fabricated. Interestingly, the bowknot structure twists upon ultraviolet (UV) light irradiation. Special multiparticle assemblies of the double-flower-shaped structures are identified. The structural transformation process could be attributed to photocorrosion of CdS under the UV light. The bowknot-shaped topotactic structure is also important for the transformation of NP superstructures (NP-S). These results indicate that the photoetching technique could adjust the transformation among different NP superstructures, which offers a new method to fabricate novel NP-S. Both irradiated and unirradiated NP-S have been applied in photoelectrochemical devices to verify the photovoltaic effect. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 2050-7526 2050-7534 |
DOI: | 10.1039/c2tc00217e |