Universität zu Köln

Hartl, Tobias ORCID: 0000-0002-3881-5462, Herrmann, Daniel, Will, Moritz, Falke, Yannic, Grueneis, Alexander, Michely, Thomas ORCID: 0000-0003-1657-1847 and Bampoulis, Pantelis ORCID: 0000-0002-2347-5223 (2022). Silicon Cluster Arrays on the Monolayer of Hexagonal Boron Nitride on Ir(111). J. Phys. Chem. C, 126 (15). S. 6809 - 6815. WASHINGTON: AMER CHEMICAL SOC. ISSN 1932-7455

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Abstract

Periodic structures of silicon are of interest in quantum-dot-based applications because of their unique optical and electronicproperties. We report on the fabrication of stable quasi-ordered Sinanocluster arrays on the moire of a hexagonal boron nitride (h-BN)monolayer on Ir(111). The h-BN monolayer promotes the growth ofregular Si nanoclusters at 130 K and electronically decouples the clustersfrom the underlying metallic substrate. Using scanning tunnelingmicroscopy and spectroscopy, we have investigated the cluster bindingsites, their electronic structure, and their thermal stability. Wefind that theclusters display a size-dependent bandgap and that they are stable up to577 K, after which cluster coalescence degrades the arrays.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hartl, Tobias UNSPECIFIED orcid.org/0000-0002-3881-5462 UNSPECIFIED Herrmann, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Will, Moritz UNSPECIFIED UNSPECIFIED UNSPECIFIED Falke, Yannic UNSPECIFIED UNSPECIFIED UNSPECIFIED Grueneis, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Michely, Thomas UNSPECIFIED orcid.org/0000-0003-1657-1847 UNSPECIFIED Bampoulis, Pantelis UNSPECIFIED orcid.org/0000-0002-2347-5223 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-666283
DOI:	10.1021/acs.jpcc.2c00694
Journal or Publication Title:	J. Phys. Chem. C
Volume:	126
Number:	15
Page Range:	S. 6809 - 6815
Date:	2022
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1932-7455
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM DOTS; NANOCRYSTALS; PHOTOLUMINESCENCE; SIZE Multiple languages Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66628