Dunbar, Alan - University of Sheffield - Department of Chemical and Biological Engineering

个人简介

Alan Dunbar attained an MPhys in Physics with Electronics at UMIST (Manchester) in 1997, and also his PhD entitled `Preparation and characterisation of Silicon – Germanium quantum dots´ in 2001 under the supervision of Dr M. Halsall. After his PhD, Alan moved to the University of Canterbury, Christchurch, New Zealand to work for two years with Assoc. Prof. Simon Brown investigating the electrical properties of metallic nano-particles. He applied percolation theory to explain the onset of conduction in thin films of deposited nano-particles in conjunction with morphological data obtained by atomic force microscopy and electron microscopy. Alan then returned to the UK to begin working in the University of Sheffield (Department of Physics and Astronomy) where he developed gas sensors for volatile organic compounds with Dr T. Richardson. The porphyrin based gas sensors undergo strong colour changes upon exposure to specific toxic gases which co-ordinate to the porphyrin as axial ligands. Alan then took up a research post working with Prof. R. Jones FRS and Prof D Lidzey focused on the optimization of polymer based solar cells through understanding how the nano-scale morphology of the thin polymer films wthin the devices influences the device efficiency. This involved in situ spectroscopic ellipsometry and x-ray reflectivity to investigate the development of phase separation during the deposition of the thin films of solar cell materials. In 2009 he was appointed as lecturer in energy in the Department of Chemical and Process Engineering at the University of Sheffield, and in 2010 he took on the role of first year tutor. In Jan 2014 he took on the role of Post Graduate Research Tutor, and then in Sept 2014 became Director of Student Support. In 2015 he was promoted to Senior Lecturer in Energy. He now leads an active and diverse research group studying his various research interests.

研究领域

Polymer Based Solar Cells Experimental techniques to characterise nano-scale phase separation in polymers Thin film toxic gas sensors Electrical properties of nano-structured systems

近期论文

查看导师新发文章（温馨提示：请注意重名现象，建议点开原文通过作者单位确认）

Evyapan M & Dunbar ADF (2016) Controlling surface adsorption to enhance the selectivity of porphyrin based gas sensors. Applied Surface Science, 362, 191-201. Parnell AJ, Cadby AJ, Dunbar ADF, Roberts GL, Plumridge A, Dalgliesh RM, Skoda MWA & Jones RAL (2016) Physical mechanisms responsible for the water-induced degradation of PC 61 BM P3HT photovoltaic thin films. Journal of Polymer Science Part B: Polymer Physics, 54(2), 141-146. View this article in White Rose Research Online Barrows AT, Lilliu S, Pearson AJ, Babonneau D, Dunbar ADF & Lidzey DG (2016) Monitoring the Formation of a CH 3 NH 3 PbI 3- Cl Perovskite during Thermal Annealing Using X-Ray Scattering. Advanced Functional Materials. View this article in White Rose Research Online. Griffin J, Pearson AJ, Scarratt NW, Wang T, Dunbar ADF, Yi H, Iraqi A, Buckley AR & Lidzey DG (2015) Organic photovoltaic devices with enhanced efficiency processed from non-halogenated binary solvent blends. Organic Electronics, 21, 216-222. View this article in White Rose Research Online Wang T, Scarratt NW, Yi H, Coleman IF, Zhang Y, Grant RT, Yao J, Skoda MWA, Dunbar ADF, Jones RAL, Iraqi A & Lidzey DG (2015) Vertical stratification and its impact on device performance in a polycarbazole based copolymer solar cells. J. Mater. Chem. C, 3(16), 4007-4015. Evyapan M & Dunbar ADF (2015) Improving the selectivity of a free base tetraphenylporphyrin based gas sensor for NO2 and carboxylic acid vapors. Sensors and Actuators B: Chemical, 206, 74-83. Brittle S, Desai P, Ng WC, Dunbar A, Howell RJ, Vaclav T & Zimmerman WB (2015) Minimising Microbubble Size through Frequency Control. Official journal of the European Federation of Chemical Engineering: Part A. Parnell AJ, Hobson A, Dalgliesh RM, Jones RAL & Dunbar ADF (2014) Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials. Journal of Visualized Experiments(83). Barrows AT, Pearson AJ, Kwak CK, Dunbar ADF, Buckley AR & Lidzey DG (2014) Efficient planar heterojunction mixed-halide perovskite solar cells deposited via spray-deposition. Energy & Environmental Science, 7(9), 2944-2944.