Synthesis and Characterization of Ultrathin Silver Sulfide Nanoplatelets

Kubie, L, King, LA ORCID: https://orcid.org/0000-0002-0772-2378, Kern, ME, Murphy, JR, Kattel, S, Yang, Q, Stecher, JT, Rice, WD and Parkinson, BA (2017) Synthesis and Characterization of Ultrathin Silver Sulfide Nanoplatelets. ACS Nano, 11 (8). pp. 8471-8477. ISSN 1936-086X

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Official URL: https://pubs.acs.org/doi/10.1021/acsnano.7b04280

Abstract

© 2017 American Chemical Society. We report the synthesis of ultrathin silver sulfide (Ag2S) nanoplatelets (NPLs) synthesized via a one-pot method in ethylene glycol with 3-mercaptopropionic acid serving as both the sulfur precursor and the platelet ligand. The colloidally synthesized nanoplatelets are exceptionally thin, with a thickness of only 3.5 ± 0.2 Å and a 1S exciton Bohr diameter to confinement ratio of ∼12.6. The NPL growth is shown to be quantized by layer thickness using absorption and photoluminescence (PL) spectroscopy. Transmission electron microscopy, atomic force microscopy, and X-ray diffraction analyses of the NPLs show that they correspond to the (202) plane of the β-Ag2S structure. The PL quantum yield of these NPLs is ∼30%, suggesting their potential use in biomedical imaging. Optoelectronic properties were evaluated via sensitized photocurrent spectroscopy with the resulting spectra closely matching the distinctive absorption spectral shape of the Ag2S NPLs.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	07 Nov 2019 10:08
Publisher:	American Chemical Society
Additional Information:	“This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society and the Division of Chemical Education, Inc., after peer review and technical editing by the publisher."
Divisions:	Faculties > Science and Engineering
Subject terms:	Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Chemistry, Physical, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Chemistry, Science & Technology - Other Topics, Materials Science, nanoplatelet, silver sulfide, near-infrared en-iitter, photoluminescence quantum yield, incident photon conversion efficiency, colloidal synthesis, AG2S QUANTUM DOTS, SEMICONDUCTOR, NANOCRYSTALS, CDSE, MOS2, GENERATION, Silver Compounds, Colloids, Microscopy, Electron, Transmission
URI:	https://e-space.mmu.ac.uk/id/eprint/624324
DOI:	https://doi.org/10.1021/acsnano.7b04280
ISSN	1936-086X
e-ISSN	1936-086X

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