Plasmon Enhanced Direct Bandgap Emissions in Cu7S4@Au2S@Au Nanorings. Issue 41 (30th August 2016)

• Record Type: Journal Article
• Authors: Yoon, Donghwan; Yoo, SeokJae; Nam, Kyoung Sik; Baik, Hionsuck; Lee, Kwangyeol; Park, Q‐Han
• Is Part Of: Small. Volume 12:Issue 41(2016)
• Page Start: 5728
• Page End: 5733
• Publication Date: 2016-08-30
• Subjects: cation exchanges -- copper sulfides -- surface plasmons -- templates, nanorings; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201602112
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : 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 Cu7 S4 @Au2 S@Au nanorings exhibiting plasmon enhanced emissions at the direct bandgap is reported. The synthesized Cu7 S4 @Au2 S@Au nanorings show greatly enhanced absorption and emission by local plasmons compared to pure copper sulfide nanoparticles. Abstract : Hexagonal Cu7 S4 @Au2 S@Au nanorings are synthesized and plasmonically enhanced emission is demonstrated at the direct bandgap in copper sulfides. Plasmon enhanced direct band transitions of hexagonal Cu7 S4 @Au2 S@Au nanorings exhibit enhanced absorption, scattering, and photoluminescence.