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Single step electrodeposition process using ionic liquid to grow highly luminescent silicon/rare earth (Er, Tb) thin films with tunable composition

Single step electrodeposition process using ionic liquid to grow highly luminescent silicon/rare earth (Er, Tb) thin films with tunable composition
Single step electrodeposition process using ionic liquid to grow highly luminescent silicon/rare earth (Er, Tb) thin films with tunable composition

A one-step method for the electrodeposition of silicon–erbium (Si/Er) and silicon–terbium (Si/Tb) thin films using room temperature ionic liquid (RTIL) has been successfully developed. By playing with the electrochemical parameters, the concentration of incorporated rare earth (RE) ions (Er3+ and Tb3+) in the thin films can be tuned. The obtained thin films have been characterized by electron microscopy and composition analysis techniques. The structural quality of the obtained thin films is characterized by a uniform distribution of Si atoms and RE ions throughout the thickness. The study of the optical properties, carried out by photoluminescence (PL) spectroscopy, demonstrates the efficient optical activity of the films with typical Er and Tb luminescence at room temperature depending on the RE content. The deposition method described is a promising strategy for incorporating RE ions in semiconducting thin films to achieve materials for opto-electronic applications.

2046-2069
3789-3797
Thomas, Shibin
f9dd0751-582b-4c35-9725-36fbe08bbda8
Mallet, Jeremy
99a096bc-7589-46d3-a40c-6bf91a8da79c
Rinnert, Hervé
55722bc1-e589-4194-9888-ee037f808fef
Molinari, Michael
811073e1-f1d5-4282-8016-ddecefbe2975
Thomas, Shibin
f9dd0751-582b-4c35-9725-36fbe08bbda8
Mallet, Jeremy
99a096bc-7589-46d3-a40c-6bf91a8da79c
Rinnert, Hervé
55722bc1-e589-4194-9888-ee037f808fef
Molinari, Michael
811073e1-f1d5-4282-8016-ddecefbe2975

Thomas, Shibin, Mallet, Jeremy, Rinnert, Hervé and Molinari, Michael (2018) Single step electrodeposition process using ionic liquid to grow highly luminescent silicon/rare earth (Er, Tb) thin films with tunable composition. RSC Advances, 8 (7), 3789-3797. (doi:10.1039/c7ra11051k).

Record type: Article

Abstract

A one-step method for the electrodeposition of silicon–erbium (Si/Er) and silicon–terbium (Si/Tb) thin films using room temperature ionic liquid (RTIL) has been successfully developed. By playing with the electrochemical parameters, the concentration of incorporated rare earth (RE) ions (Er3+ and Tb3+) in the thin films can be tuned. The obtained thin films have been characterized by electron microscopy and composition analysis techniques. The structural quality of the obtained thin films is characterized by a uniform distribution of Si atoms and RE ions throughout the thickness. The study of the optical properties, carried out by photoluminescence (PL) spectroscopy, demonstrates the efficient optical activity of the films with typical Er and Tb luminescence at room temperature depending on the RE content. The deposition method described is a promising strategy for incorporating RE ions in semiconducting thin films to achieve materials for opto-electronic applications.

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More information

Accepted/In Press date: 22 December 2017
e-pub ahead of print date: 19 January 2018
Published date: 2018

Identifiers

Local EPrints ID: 424771
URI: http://eprints.soton.ac.uk/id/eprint/424771
ISSN: 2046-2069
PURE UUID: 041c905a-629b-4d15-9fb5-248712e4cc00
ORCID for Shibin Thomas: ORCID iD orcid.org/0000-0002-7735-788X

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Date deposited: 05 Oct 2018 11:45
Last modified: 28 Apr 2022 02:25

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Contributors

Author: Shibin Thomas ORCID iD
Author: Jeremy Mallet
Author: Hervé Rinnert
Author: Michael Molinari

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