Single-photon emitting arrays by capillary assembly of colloidal semiconductor CdSe/CdS/SiO2 nanocrystals
Author(s)
Type
Journal Article
Abstract
The controlled placement of colloidal semiconductor nanocrystals (NCs) onto planar surfaces is crucial for scalable fabrication of single-photon emitters on-chip, which are critical elements of optical quantum computing, communication, and encryption. The positioning of colloidal semiconductor NCs such as metal chalcogenides or perovskites is still challenging, as it requires a nonaggressive fabrication process to preserve the optical properties of the NCs. In this work, periodic arrays of 2500 nanoholes are patterned by electron beam lithography in a poly(methyl methacrylate) (PMMA) thin film on indium tin oxide/glass substrates. Colloidal core/shell CdSe/CdS NCs, functionalized with a SiO2 capping layer to increase their size and facilitate deposition into 100 nm holes, are trapped with a close to optimal Poisson distribution into the PMMA nanoholes via a capillary assembly method. The resulting arrays of NCs contain hundreds of single-photon emitters each. We believe this work paves the way to an affordable, fast, and practical method for the fabrication of nanodevices, such as single-photon-emitting light-emitting diodes based on colloidal semiconductor NCs.
Date Issued
2023-05-01
Date Acceptance
2023-04-01
Citation
ACS Photonics, 2023, 10 (5), pp.1662-1670
ISSN
2330-4022
Publisher
American Chemical Society
Start Page
1662
End Page
1670
Journal / Book Title
ACS Photonics
Volume
10
Issue
5
Copyright Statement
Copyright © 2023 The Authors. Published by American Chemical Society. This publication is licensed under
CC-BY 4.0.
CC-BY 4.0.
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000984391600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
chalcogenides
Materials Science
Materials Science, Multidisciplinary
nanocrystals
Nanoscience & Nanotechnology
OPPORTUNITIES
Optics
Physical Sciences
Physics
Physics, Applied
Physics, Condensed Matter
quantum dots
QUANTUM DOTS
Science & Technology
Science & Technology - Other Topics
semiconductors
single-photon
spectroscopy
Technology
Publication Status
Published
Date Publish Online
2023-05-01