Au–CsPbBr 3 Hybrid Architecture: Anchoring Gold Nanoparticles on Cubic Perovskite Nanocrystals

Balakrishnan, Subila K.; Kamat, Prashant V.

doi:10.1021/acsenergylett.6b00592

Title: Au–CsPbBr ₃ Hybrid Architecture: Anchoring Gold Nanoparticles on Cubic Perovskite Nanocrystals

Journal Article · Fri Dec 09 00:00:00 EST 2016 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.6b00592· OSTI ID:1335180

Balakrishnan, Subila K. ^[1];

^[1]

Radiation Laboratory, Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States

A selective growth of gold (Au) nanoparticles on the corners of CsPbBr₃ nanocrystals (NCs) is made possible with the treatment of Au(III) salts such as Au(III) bromide and Au(III) chloride in solution. The surface bound oleylamine ligands not only stabilize NCs but also facilitate reduction of the Au(III) salts followed by nucleation of the Au nanoparticles on the corners of the perovskite NCs. The luminescence quantum yield of NCs is decreased when Au nanoparticles are formed on the corners of CsPbBr₃ NCs, suggesting interaction between the two systems. Formation of Au nanoparticles as well as an anion exchange is seen when Au(III) bromide was replaced with Au(III) chloride as a precursor. This simple strategy of designing perovskite-gold hybrid nanostructures with good colloidal stability offers new opportunities to explore their photocatalytic properties.

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Research Organization:: University of Notre Dame, IN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: FC02-04ER15533

OSTI ID:: 1335180

Alternate ID(s):: OSTI ID: 1426192

Journal Information:: ACS Energy Letters, Journal Name: ACS Energy Letters Vol. 2 Journal Issue: 1; ISSN 2380-8195

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 115 works

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