The University of Southampton
University of Southampton Institutional Repository

Selection and characterisation of weakly coordinating solvents for semiconductor electrodeposition

Selection and characterisation of weakly coordinating solvents for semiconductor electrodeposition
Selection and characterisation of weakly coordinating solvents for semiconductor electrodeposition

Weakly coordinating solvents, such as dichloromethane, have been shown to be attractive for the electrodeposition of functional p-block compound and alloy semiconductors for electronic device applications. In this work the use of solvent descriptors to define weakly coordinating solvents and to identify new candidates for electrochemical applications is discussed. A set of solvent selection criteria are identified based on Kamlet and Taft's π*, α and β parameters: suitable solvents should be polar (π* ≥ 0.55), aprotic and weakly coordinating (α and β ≤ 0.2.). Five candidate solvents were identified and compared to dichloromethane: trifluorotoluene, o-dichlorobenzene, p-fluorotoluene, chlorobenzene and 1,2-dichloroethane. The solvents were compared using a suite of measurements including electrolyte voltammetric window, conductivity, and differential capacitance, and the electrochemistry of two model redox couples (decamethylferrocene and cobaltocenium hexafluorophosphate). Ion pairing is identified as a determining feature in weakly coordinating solvents and the criteria for selecting a solvent for electrochemistry is considered. o-dichlorobenzene and 1,2-dichloroethane are shown to be the most promising of the five for application to electrodeposition because of their polarity.

1463-9076
8093-8103
Black, Alexander
afede714-ea39-480d-b9e8-4d2af1d930c8
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Black, Alexander
afede714-ea39-480d-b9e8-4d2af1d930c8
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075

Black, Alexander and Bartlett, Philip N. (2022) Selection and characterisation of weakly coordinating solvents for semiconductor electrodeposition. Physical Chemistry Chemical Physics, 24 (14), 8093-8103. (doi:10.1039/d2cp00696k).

Record type: Article

Abstract

Weakly coordinating solvents, such as dichloromethane, have been shown to be attractive for the electrodeposition of functional p-block compound and alloy semiconductors for electronic device applications. In this work the use of solvent descriptors to define weakly coordinating solvents and to identify new candidates for electrochemical applications is discussed. A set of solvent selection criteria are identified based on Kamlet and Taft's π*, α and β parameters: suitable solvents should be polar (π* ≥ 0.55), aprotic and weakly coordinating (α and β ≤ 0.2.). Five candidate solvents were identified and compared to dichloromethane: trifluorotoluene, o-dichlorobenzene, p-fluorotoluene, chlorobenzene and 1,2-dichloroethane. The solvents were compared using a suite of measurements including electrolyte voltammetric window, conductivity, and differential capacitance, and the electrochemistry of two model redox couples (decamethylferrocene and cobaltocenium hexafluorophosphate). Ion pairing is identified as a determining feature in weakly coordinating solvents and the criteria for selecting a solvent for electrochemistry is considered. o-dichlorobenzene and 1,2-dichloroethane are shown to be the most promising of the five for application to electrodeposition because of their polarity.

Text
Black Bartlett 2022 Selection and Characterisation of Weakly Coordinating Solvents - Accepted Manuscript
Restricted to Repository staff only until 17 March 2023.
Available under License Creative Commons Attribution.
Request a copy

More information

Accepted/In Press date: 14 March 2022
e-pub ahead of print date: 17 March 2022
Published date: 23 March 2022
Additional Information: Funding Information: Dr Wenjian Zhang is thanked for the supply of solvents and reagents. This work was supported by EPSRC through the Advanced Devices by Electroplating program grant (ADEPT; EP/N035437/1). Publisher Copyright: © 2022 The Royal Society of Chemistry

Identifiers

Local EPrints ID: 456091
URI: http://eprints.soton.ac.uk/id/eprint/456091
ISSN: 1463-9076
PURE UUID: 9a4ab453-3029-4ce0-afe7-bbeb8ce71afb
ORCID for Alexander Black: ORCID iD orcid.org/0000-0003-3001-3083
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 26 Apr 2022 13:23
Last modified: 24 Jan 2023 02:51

Export record

Altmetrics

Contributors

Author: Alexander Black ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×