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Research project

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: [email protected]

Other researchers

Professor Philip Bartlett

Professor of Chemistry

Research interests

  • Electrochemistry
  • Bioelectrochemistry
  • Templated electrodeposition of nanomaterials
Connect with Philip

Email: [email protected]

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: [email protected]

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: [email protected]

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: [email protected]

Research outputs

Phase-change memory properties of electrodeposited Ge-Sb-Te thin film
Ruomeng Huang, Gabriela Kissling, Andrew Jolleys, Philip Bartlett, Andrew Hector, William Levason, Gillian Reid & Cornelis de Groot, 2015, Nanoscale Research Letters, 10, 1-7
DOI: 10.1186/s11671-015-1136-4
Type: article
Non-aqueous electrodeposition of functional semiconducting metal chalcogenides: Ge2Sb2Te5phase change memory
Philip N. Bartlett, Sophie L. Benjamin, C.H. (Kees) de Groot, Andrew L. Hector, Ruomeng Huang, Andrew Jolleys, Gabriela Kissling, William Levason, Stuart J. Pearce, Gillian Reid & Yudong Wang, 2015, Materials Horizons, 2(4), 420-426
DOI: 10.1039/C5MH00030K
Type: article
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