Multiscale characterisation for nanoelectronics
INRIM, Sala Conferenze
National Physical Laboratory, UK
Head of Materials Science & Engineering
This talk will provide a brief introduction to Materials Metrology at NPL and then focus on examples of multiscale characterisation for nanoelectronics. Novel optoelectronic devices make use of advanced nanomaterial systems, where the nanoscale composition and morphology significantly affects the performance. Despite advances in analytical characterisation methods, such structure-property relationship is very challenging to measure directly.
NPL has been developing a suite of characterisation techniques to measure these materials and devices in situ and with high spatial resolution.
We will cover examples where these methods are applied to solar cells, 2D materials and nanowire based electronics, from macroscopic measurements down to the nanoscale.
Fernando Castro is currently Head of Materials Science & Engineering at the National Physical Laboratory, UK. He also holds several distinguished international roles: as chair of the TWA36 Printed, Flexible and Stretchable Electronics of VAMAS, UK national expert in international standards committees, Associate Editor of the peer review journal Science and Technology of Advanced Materials, among others. He has chaired international conferences on nanomaterials, printed electronics, advanced materials metrology and solar cells (e.g. ALTECH, ISOS) and delivered invited keynote/plenary talks in 11 countries.
Dr Castro is an expert in the development of novel characterization methods and physical models of new material systems that now allows unprecedented insights into the relationship between microscopic physical processes and performance of electronic devices, in particular organic, printed and nanoelectronics. He is the author of over 120 publications, including over 50 peer-review papers, 3 book chapters and 2 patents related to thin film electronics, nanotechnology, and metrology.
He has also been responsible for significant technical innovation in collaboration with industrial partners, which included the development of new materials (e.g. novel flexible and transparent electrode) and advanced measurement methods (e.g. measurement protocols, innovative equipment) leading to license agreements and patents currently being commercialized in industry.
Dr Castro has significant experience in bidding, leading and delivering R&D projects, from small consultancy work to multimillion collaborative projects. He has been the main coordinator (PI) of 9 large projects since 2011, worth >£16M, and NPL technical lead to another £4M worth of projects. He has provided invited expert advice to over 25 different peer-review scientific journals as well as to research funding agencies in 4 countries. He was the recipient of 3x Best Paper awards in international conferences, the NPL Rayleigh Award 2012 and was elected Fellow of the Institute of Physics (FInstP), Fellow of the Institute of Materials, Minerals and Mining (FIMMM) and Visiting Professor at the University of Surrey, UK.
Selected Recent Publications
• Nanoscale 3D Characterisation of an Organic Bulk Heterojunction using Conductive Scanning Probe Tomography, R.C. Chintala, S. Wood, J.C. Blakesley, P. Pavia, U. Celano, K. Paredis, W. Vandervorst, F.A. Castro, accepted AIP Advances (2019)
• Simultaneous Topographical, Electrical and Optical Microscopy of Optoelectronic Devices at the Nanoscale, N. Kumar, A. Zoladek-Lemanczyk, A.A.Y. Guilbert, S. M. Tuladhar, T. Kirchartz, B. Schroeder, I. McCulloch, J. Nelson, D. Roy and F.A. Castro, Nanoscale 9 (2017) 2723-2731
• Spray deposited semiconducting organic single crystals, G.P. Rigas, J.E. Anthony, F.A. Castro, M. Shkunov, Nature Communications 7 (2016) 13531.
• Precise Characterisation of Molecular Orientation in a Single Crystal Field-Effect Transistor Using Polarised Raman Spectroscopy, S. Wood, G.-P. Rigas, A. Zoladek-Lemanczyk, J. C Blakesley, S. Georgakopoulos, M. Mas-Torrent, M. Shkunov, F.A. Castro, Scientific Reports 6, 33057; doi: 10.1038/srep33057 (2016).
• Simultaneous Tuneable Selection and Self-Assembly of Si Nanowires from Heterogeneous Feedstock, M. Constantinou, G.P. Rigas, F.A. Castro, V. Stolojan, E. Adkins