EP/I010890/1 - Phase Change Materials - Gill Reid

Project overview

We report a new method for electrodeposition of device-quality metal chalcogenide semiconductor thin films and nanostructures from a single, highly tuneable, non-aqueous electrolyte. This method opens up the prospect of electrochemical preparation of a wide range of functional semiconducting metal chalcogenide alloys that have applications in various nano-technology areas, ranging from the electronics industry to thermoelectric devices and photovoltaic materials. The functional operation of the new method is demon- strated by means of its application to deposit the technologically important ternary Ge/Sb/Te alloy, GST-225, for fabrication of nano- structured phase change memory (PCM) devices and the quality of the material is confirmed by phase cycling via electrical pulsed switching of both the nano-cells and thin films.

Staff

Lead researchers

Professor Gill Reid

PROFESSOR OF CHEMISTRY

Research interests

Synthetic inorganic chemistry
Design and synthesis of new macrocyclic and multidentate ligands involving donor atoms from Groups 15 (P, As, Sb, Bi) and 16 (S, Se, Te)
Coordination chemistry with s-, p-, d- and f-block metal ions

Connect with Gill

Email: G.Reid@soton.ac.uk

Other researchers

Professor Philip Bartlett

Professor of Chemistry

Research interests

Electrochemistry
Bioelectrochemistry
Templated electrodeposition of nanomaterials

Connect with Philip

Email: P.N.Bartlett@soton.ac.uk

Professor Andrew Hector

Head of School

Research interests

Materials synthesis, including metal nitrides, thin film materials, sol-gel and solvothermal processes and porous structures.
Materials characterisation – powder and thin film diffraction, microscopy and spectroscopy techniques.
Electrochemistry, including charge storage in battery and supercapacitor type cells, and electrodeposition of various materials.

Connect with Andrew

Email: A.L.Hector@soton.ac.uk

Professor Kees De Groot

Professor

Research interests

Radio-Frequency and Microwave Devices
2 dimensional Transition Metal Dichalcogenides Transistors
Smart Radiative Cooling and RF control of smart glass using metal oxides such as Al-doped ZnO and W-doped VO2

Connect with Kees

Email: chdg@southampton.ac.uk

Emeritus Professor William Levason

Research interests

Coordination chemistry, group 15 and 16 donor ligands, early transition metal chemistry, main group metal chemistry

Connect with William

Email: wxl@soton.ac.uk

Research outputs

Chemical vapour deposition of antimony chalcogenides with positional and orientational control: precursor design and substrate selectivity

Sophie L. Benjamin, C.H. de Groot, Andrew L. Hector, Ruomeng Huang, Elena Koukharenko, William Levason & Gillian Reid, 2015, Journal of Materials Chemistry C, 3, 423-430

DOI: 10.1039/C4TC02327G

Type: article

Soft diphosphine and diarsine complexes of niobium(v) and tantalum(v) fluorides: synthesis, properties, structures and comparisons with the corresponding chlorides

William Levason, Mark Light, Gillian Reid & Wenjian Zhang, 2014, Dalton Transactions, 43(25), 9557-9566

DOI: 10.1039/c4dt01029a

Type: article

Unexpected neutral aza-macrocycle complexes of sodium

Matthew Everett, Andrew Jolleys, William Levason, David Pugh & Gillian Reid, 2014, Chemical Communications, 50(44), 5843-5846

DOI: 10.1039/c4cc01407c

Type: article

Controlling the nanostructure of bismuth telluride by selective chemical vapour deposition from a single source precursor

Sophie L. Benjamin, C.H. de Groot, Chitra Gurnani, Andrew L. Hector, Ruomeng Huang, Elena Koukharenko, William Levason & Gillian Reid, 2014, Journal of Materials Chemistry A, 2(14), 4865-4869

DOI: 10.1039/c4ta00341a

Type: article

Area selective growth of titanium diselenide thin films into micropatterned substrates by low-pressure chemical vapor deposition

Sophie Benjamin, C.H. de Groot, Chitra Gurnani, Andrew L. Hector, Ruomeng Huang, Konstantin Ignatyev, William Levason, Stuart Pearce, Fiona Thomas & Gillian Reid, 2013, Chemistry of Materials, 25(23), 4719-4724

DOI: 10.1021/cm402422e

Type: article

Non-aqueous electrodeposition of metals and metalloids from halometallate salts

Philip N. Bartlett, David A. Cook, C.H. de Groot, Andrew L. Hector, Ruomeng Huang, Andrew Jolleys, Gabriela P. Kissling, William Levason, Stuart Pearce & Gillian Reid, 2013, RSC Advances, 3(36), 15645-15654

DOI: 10.1039/c3ra40739j

Type: article

Telluroether and Selenoether complexes as single source reagents for low pressure chemical vapor deposition of crystalline Ga₂Te₃ and Ga₂Se₃ thin films

Kathryn George, Cornelis H. de Groot, Chitra Gurnani, Andrew L. Hector, Ruomeng Huang, Marek Jura, William Levason, Gillian Reid & R. Huang, 2013, Chemistry of Materials, 25(9), 1829-1836

DOI: 10.1021/cm400382j

Type: article