e-space
Manchester Metropolitan University's Research Repository

Synthesis and Characterization of Ultrathin Silver Sulfide Nanoplatelets

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

[img]
Preview

Download (11MB) | Preview

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.

Impact and Reach

Statistics

Downloads
Activity Overview
14Downloads
69Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (login required)

Edit Item Edit Item