Solid-liquid-vapor metal-catalyzed etching of lateral and vertical nanopores.
Wallentin, Jesper LU ; Deppert, Knut LU
and Borgström, Magnus
LU
(2013)
In Nanotechnology
24(41).
- Abstract
- Etching is an essential tool for the creation of nanostructures, where patterned metal structures can be used as masks. Here, we investigate HCl gas etching of InP substrates decorated with Au nanoparticles, and find that the etch rate is strongly increased at the Au-InP interfaces. The {111}A facets of the InP are preferentially etched. The metal nanoparticles follow in the etch direction, thereby creating nanopores. The size and position of the pores is controlled by the Au nanoparticles, and we measure nanopores as thin as 20 nm with an aspect ratio of 25:1. The direction of the nanopores is influenced by the temperature and the substrate orientation, which we use to demonstrate lateral, vertical and inclined nanopores. We explain the... (More)
- Etching is an essential tool for the creation of nanostructures, where patterned metal structures can be used as masks. Here, we investigate HCl gas etching of InP substrates decorated with Au nanoparticles, and find that the etch rate is strongly increased at the Au-InP interfaces. The {111}A facets of the InP are preferentially etched. The metal nanoparticles follow in the etch direction, thereby creating nanopores. The size and position of the pores is controlled by the Au nanoparticles, and we measure nanopores as thin as 20 nm with an aspect ratio of 25:1. The direction of the nanopores is influenced by the temperature and the substrate orientation, which we use to demonstrate lateral, vertical and inclined nanopores. We explain the process by a solid-liquid-vapor model, in which the liquid metal particle catalyzes the dissolution of the solid InP. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4065481
- author
- Wallentin, Jesper
LU
; Deppert, Knut
LU
and Borgström, Magnus
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanotechnology
- volume
- 24
- issue
- 41
- article number
- 415303
- publisher
- IOP Publishing
- external identifiers
-
- wos:000325141900007
- pmid:24060650
- scopus:84884647847
- pmid:24060650
- ISSN
- 0957-4484
- DOI
- 10.1088/0957-4484/24/41/415303
- language
- English
- LU publication?
- yes
- id
- afa65202-2d71-4851-83e3-aea27d078e75 (old id 4065481)
- date added to LUP
- 2016-04-01 11:14:28
- date last changed
- 2023-08-31 21:26:16
@article{afa65202-2d71-4851-83e3-aea27d078e75,
abstract = {{Etching is an essential tool for the creation of nanostructures, where patterned metal structures can be used as masks. Here, we investigate HCl gas etching of InP substrates decorated with Au nanoparticles, and find that the etch rate is strongly increased at the Au-InP interfaces. The {111}A facets of the InP are preferentially etched. The metal nanoparticles follow in the etch direction, thereby creating nanopores. The size and position of the pores is controlled by the Au nanoparticles, and we measure nanopores as thin as 20 nm with an aspect ratio of 25:1. The direction of the nanopores is influenced by the temperature and the substrate orientation, which we use to demonstrate lateral, vertical and inclined nanopores. We explain the process by a solid-liquid-vapor model, in which the liquid metal particle catalyzes the dissolution of the solid InP.}},
author = {{Wallentin, Jesper and Deppert, Knut and Borgström, Magnus}},
issn = {{0957-4484}},
language = {{eng}},
number = {{41}},
publisher = {{IOP Publishing}},
series = {{Nanotechnology}},
title = {{Solid-liquid-vapor metal-catalyzed etching of lateral and vertical nanopores.}},
url = {{http://dx.doi.org/10.1088/0957-4484/24/41/415303}},
doi = {{10.1088/0957-4484/24/41/415303}},
volume = {{24}},
year = {{2013}},
}