Plasmon Enhanced Direct Bandgap Emissions in Cu7S4@Au2S@Au Nanorings

Nanostructured copper sulfides, promising earth‐abundant p‐type semiconductors, have found applications in a wide range of fields due to their versatility, tunable low bandgap, and environmental sustainability. The synthesis of hexagonal Cu7S4@Au2S@Au nanorings exhibiting plasmon enhanced emissions...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2016-11, Vol.12 (41), p.5728-5733
Main Authors: Yoon, Donghwan, Yoo, SeokJae, Nam, Kyoung Sik, Baik, Hionsuck, Lee, Kwangyeol, Park, Q-Han
Format: Article
Language:English
Subjects:
cation exchanges
copper sulfides
Emissions
nanorings
Nanotechnology
surface plasmons
templates
templates, nanorings
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Summary:Nanostructured copper sulfides, promising earth‐abundant p‐type semiconductors, have found applications in a wide range of fields due to their versatility, tunable low bandgap, and environmental sustainability. The synthesis of hexagonal Cu7S4@Au2S@Au nanorings exhibiting plasmon enhanced emissions at the direct bandgap is reported. The synthesized Cu7S4@Au2S@Au nanorings show greatly enhanced absorption and emission by local plasmons compared to pure copper sulfide nanoparticles. Hexagonal Cu7S4@Au2S@Au nanorings are synthesized and plasmonically enhanced emission is demonstrated at the direct bandgap in copper sulfides. Plasmon enhanced direct band transitions of hexagonal Cu7S4@Au2S@Au nanorings exhibit enhanced absorption, scattering, and photoluminescence.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201602112