Specialist Subjects:

Thin Film Photovoltaics
Deposition and Curing
Scaling
Electrochemical Characterisation
Corrosion
Dye-Sensitized Solar Cells
Organolead Halide Perovskite
Kesterite CZTS

Research

My research area is thin film printed PV with a specialism in developing new technologies for the manufacture of novel photovoltaics including deposition and curing processes and their characterisation using electrochemistry, photochemistry or optoelectronic methods

At present there is a renaissance in thin film printed photovoltaics and typically these developments currently reside in the laboratory environment. My research goal is to take these material sets and develop the manufacturing pipeline for fabrication at scale. A three pronged approach is employed to achieve this end (i) determination of loss mechanisms associated with scale – decreases in performance when increasing from lab scale to pilot scale. (ii) Addressing process bottlenecks to reduce fabrication time (iii) Architectural translation - ensuring the widest range of substrates by building devices on sheet processed glass and roll to roll metal or plastic

In particular my research activity entails coating and curing of photoactive materials, lab and sub-module scale manufacture of PV devices as well as characterisation of photoactive materials both via electrochemical and optoelectronic methods. The research stretches across a number of different technologies: liquid based dye-sensitized solar cells, solid state dye-sensitized solar cells, organolead halide perovskites and more recently kesterite CZTS (Cu2ZnSnS4).

Publications

  1. Perovskite Solar Cells in N-I-P Structure With Four Layers Slot-Die Coated. Royal Society Open Science
  2. & Investigation into the effects of surface stripping ZnO nanosheets. Nanotechnology 29(16), 165701
  3. & Large area quantum dot luminescent solar concentrators for use with dye-sensitised solar cells. Journal of Materials Chemistry A 6(6), 2671-2680.
  4. & The role of fullerenes in the environmental stability of polymer:fullerene solar cells. Energy & Environmental Science 11(2), 417-428.
  5. & Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells. Physical Chemistry Chemical Physics 20(2), 1252-1260.

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Teaching

  • EG-108 Engineering Sustainability

    To understand what sustainability is, why it is important and how engineering can be carried out in a sustainable way. ¿sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.¿ (Bruntland Commission, UN, 1987) The three ¿pillars¿ of sustainability are protection of the environment, stable and profitable business economics and a healthy society. The module aims to inspire engineers through good case studies and to show how engineers can contribute to all three aspects of this ¿triple bottom line¿.

  • EG-183 Materials Resources

    Materials resources are and always have been a controlling factor in economic and social human development. This course assumes no prior knowledge and explores the development of materials exploitation from the earliest times illustrating how the availability of resources and the ingenuity of humankind to exploit and extract new materials has allowed the evolution of our modern world. In historical terms, materials exploitation has always been related to economic growth or military needs. Increasingly, sources of energy and materials are sought which are both economically attractive and sustainable. As such, in each section of the course aspects of sustainability and economics will be addressed to show how and why certain materials choices are made for specific applications.

  • EG-279 Functional and Smart Materials

    This module covers the underlying scientific principles behind the physical properties of functional and smart materials. It provides the basis for electrical conductivity, semiconductivity, superconductivity as well as optical, magnetic and thermal properties. The ways in which these properties can be utilised in a wide range of devices is explored. Module Aims: to introduce the scientific principles behind the physical properties of functional and smart materials and to explore the manufacture of functional devices.

  • EGTM99 Functional Coatings

    Historically coatings have been relatively benign with developments focussing on increased lifetime or greater control of colour and adhesion. In recent years industry and society have demanded increased functionality for coatings and no more so than in the world of construction. Every year millions up millions of square meters of painted cladded material is produced in the UK. By functionalising just a small percentage of this output to generate, store and release energy it is possible to have a huge impact in the energy and climate challenges set by government. This module will furnish the students with information and knowledge on the various photovoltaic technologies under development, paying particular attention to technologies that utilise earth abundant, environmentally friendly materials. The course will require students to make a solar cell in the laboratory and perform measurements on its efficiency.

Supervision

  • Application of perovskite solar cells onto flexible steel substrates (current)

    Student name:
    EngD
    Other supervisor: Dr Eifion Jewell
  • Glass Substrates for PV applications (current)

    Student name:
    EngD
    Other supervisor: Dr Justin Searle
  • The challenges of scale for CZTS solar cells (current)

    Student name:
    EngD
    Other supervisor: Prof David Worsley
  • Multispectral manufacturing: Making light work of steel processing (current)

    Student name:
    PhD
    Other supervisor: Dr Eifion Jewell
  • 'Stability and encapsulation studies of perovskite solar cells' (current)

    Student name:
    PhD
    Other supervisor: Prof David Worsley
  • Enabling the up-scaling of stable perovskite solar cells (current)

    Student name:
    PhD
    Other supervisor: Dr Eifion Jewell
  • 'Optimisation of Perovskite Solar Cells For Slot-Die Coating' (current)

    Student name:
    PhD
    Other supervisor: Dr Matthew Carnie
  • Module design and patterning for perovskite solar cells (current)

    Student name:
    PhD
    Other supervisor: Dr Eifion Jewell
  • Precursor Formulation and Processing of Smart Metal Oxide Compact Layers for the Manufacture of Photovoltaic Devices (current)

    Student name:
    PhD
    Other supervisor: Dr Cecile Charbonneau
  • 'Raman spectroscopy for advanced study of printable solar cells' (awarded 2018)

    Student name:
    MSc
    Other supervisor: Dr Chung Tsoi
  • 'New insights into modern nanostructured PV technology. The latest thermal and infrared analysis in hyphenated systems' (awarded 2017)

    Student name:
    MSc
    Other supervisor: Miss Katherine Hooper