Developing Precursors for the Electrodeposition of Early Metal Chalcogenide Semiconductors

Lead Research Organisation: University of Southampton
Department Name: School of Chemistry

Abstract

Transition metal dichalcogenides (TMDCs) are inorganic materials of formula ME2 (M = metal; E = chalcogen = sulfur, selenium or tellurium). They form 2-dimensional layered hexagonal structures related to that of cadmium diiodide, in which the metal-chalcogen bonding within the layers is very strong, whilst that between the layers is much weaker (van der Waals interactions) - i.e. inorganic analogues of graphite.
This project will develop new single source precursors that can act as the source of both the metal and the chalcogen for the electrodeposition of 2D layered TMDC thin films. Our priorities are to demonstrate electrodeposition of ME2 with good control of the M:E ratio present in the deposited films and their morphology. We will benchmark their functional properties (electrical and magnetic).

Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/N509747/1 01/10/2016 30/09/2021
1946877 Studentship EP/N509747/1 28/09/2017 30/09/2020 Danielle Smith
 
Description This project is still ongoing - the production of thin films of inorganic graphene (WS2 and MoS2) from a selection of tailor made precursors. All precursors have been specifically designed to ensure optimum deposition from electrochemical methods. The successful electrodeposition of MoS2 and WS2 thin films and the resulting characterisation by a variety of techniques. Successful deposition onto a variety of substrates with the intention of depositing films for the purpose of making devices.
Exploitation Route Advances in the production of thin films could lead to the better fabrication of devices for microelectronics and photovoltaic applications.
Sectors Chemicals,Electronics

 
Description Electrodeposition of 2D materials 
Organisation University of Southampton
Department School of Electronics and Computer Science Southampton
Country United Kingdom 
Sector Academic/University 
PI Contribution The synthesis of tailored precursors that are suitable for electrodeposition in non-aqueous organic solvents for the deposition of MoS2 and WS2 thin films. A series of compounds synthesised in inert conditions, optimised conditions for annealing of thin films and characterisation of materials including grazing incidence X-ray diffraction.
Collaborator Contribution The electrodeposition of MoS2 and WS2 from provided precursors in organic solvents and characterisations of resulting films including Raman, XPS and SEM. The design and fabrication of masks to electrodeposit onto devices for transisters.
Impact This collaboration involves synthetic inorganic chemistry, electrochemistry and chemical engineering.
Start Year 2017
 
Description Dalton Young Members Event 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Postgraduate students
Results and Impact Dalton Young Members Event Conference held in September 2019 - the purpose was to share our research with other researchers in the field, this was achieved by presenting a poster of our work. This included questions, discussions and networking afterwards.
Year(s) Of Engagement Activity 2019
 
Description Science and Engineering Day (University of Southampton) 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Public/other audiences
Results and Impact A full day of outreach activities aimed at engaging families and children in Science and Technology, included hands on activities such as making slime. Roughly 3000 members of the general public attend
Year(s) Of Engagement Activity 2019,2020
URL https://www.sotsef.co.uk/
 
Description Southern Dalton 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Postgraduate students
Results and Impact Southern Dalton Conference held in September 2019 - the purpose was to share our research with other researchers in the field, this was achieved by presenting a poster of our work. This included questions and discussions afterwards.
Year(s) Of Engagement Activity 2019