X-ray detection for medical imaging relies upon high sensitivity materials as a primary concern. Enhancing the sensitivity of X-ray detectors minimizes the X-ray dose during routine medical examinations. Despite tremendous investment in inorganic detectors, technical requirements limit their applicability. Therefore, there is need for reconfigurable soft materials compatible with facile integration. Sensitive and low-cost X-ray detectors have been actively sought. Recently, it’s been shown that the lowest detectable X-ray dose rate using single crystals of CH3NH3PbBr3 perovskite is 0.5 μGyair s–1 which is much lower than that required for regular medical diagnostics (5.5 μGyair s–1) and with a sensitivity 80 μC G cm–2 higher that current state of the art Se X-ray detectors. Perovskite materials combine unique features that might empower breakthrough detector technology for broad applications in the fields of security, defense, medical imaging, diagnostics, astrophysics, industrial material inspection, nuclear power stations and scientific research. In this symposium, we aim to bring key elements required to pave the way to cheaper and low does high-energy radiation detectors and scintillators.
- Organometallic halide perovskite for high radiation energy detectors
- Organic single crystals, polycrystals and plastic materials for direct and indirect ionizing detectors
- Theoretical prediction of new materials for high energy radiation detectors with high performance, low cost and low radiation dose on human body
Dr. Mahshid Ahmadi received her Ph.D. from Nanyang Technological University, Singapore in 2013. She then worked as a research technology consultant in a start-up solar cell company (HEE) in Dallas, Texas, USA. She is currently working as an assistant professor at Joint Institute for Advanced Materials (JIAM), Department of Materials Science, University of Tennessee, Knoxville. Her research interest includes materials development and electronic device fabrication. Specially, her current research focuses on organic-inorganic halide perovskite photovoltaics and
high energy radiation detectors.
Germà Garcia-Belmonte (1964) received his Ph.D. degree at UNED, 1996. He worked (1988-1992) at CIEMAT, Madrid, on experimental and theoretical research in the area of digital processing of nuclear signal. He joined the Universitat Jaume I, Castelló, in 1992 and currently works as a Full Professor of Applied Physics (2010) at the Institute of Advanced Materials. He published 198 papers in research journals, and has 12.000 citations and h-index 54 (WOS). He is recognized as 2018 Highly Cited Research (Clarivate Analytics) in the cross-field category. He studied intercalation processes in oxides and polymer films by impedance methods. He follows researches in various areas within the field of Organic Electronics and photovoltaics as electronic mechanisms in organic light-emitting diodes, organic photovoltaics, and plastic and thin-film solar cells. He is currently conducting researches in the topic of perovskite-based solar cells. Also of interest is the electrochemical kinetics of electrodes for batteries. Device physics using impedance spectroscopy (including modeling and measuring) is his main subject.
Lei (Raymond) CaoDr. Lei R. Cao is Professor in the Nuclear Engineering Program at The Ohio State University (OSU) and the Director of OSU-Nuclear Reactor Lab. Dr. Cao received his BS in Experimental Nuclear Physics from Lanzhou University in 1994, MS degree in Nuclear and Particle Physics in 2002, and PhD degree in Nuclear and Radiation Engineering Program, the Department of Mechanical Engineering at University of Texas at Austin in 2007. Prior to joining OSU, Dr. Cao was a research associate at the Center for Neutron Research, U.S. National Institute of Standards and Technology (NIST) and also received a short-term training at the Positron Emission Tomography Laboratory at Harvard Medical School. At OSU, Dr. Cao founded the Nuclear Analysis and Radiation Sensor laboratory (NARS) in 2010.
Dr. Cao's major research interests focus on applied nuclear physics and radiation science, including nuclear instrumentation and radiation detection, sensor development, radiation effects, and nuclear methods (PGAA, NDP, neutron radiography/tomography) for advanced materials characterization. Dr. Cao has published 110+ peer-reviewed journal articles and conference proceedings. Dr. Cao serves as Associate Editor for IEEE Transactions on Nuclear Science.
Wallace Choyis currently a professor of Department of Electrical and Electronic Engineering, the University of Hong Kong (HKU). Dr. Choy has published over 175 internationally peer-reviewed journal papers, contributed to one book and five book chapters, as well as a number of US and China patents. Among his publications, 12 papers have been featured as cover-story articles such as Adv. Mater., Adv Energy Mater., and Chem Comm., and 14 articles have been highlighted in research new/scholarly articles. Details of publication can be found in http://scholar.google.com.hk/citations?user=GEJf9dAAAAAJ. He was the recipient of the Sir Edward Youde Memorial Fellowship, the Croucher Foundation Fellowship, and the Outstanding Achievement Award from National Research Council of Canada and HKU Research Output Prize. He received overseas visiting fellowships from HKU to take a sabbatical leave at George Malliaras’s Group, Cornell University in 2008, a visit to Prof. Yang Yang, UCLA in summers of 2009 and 2011, Prof. Karl Leo, Institut fuer Angewandte Photophysik (IAPP), Technische Universitaet Dresden, Germany in the summer of 2010, and Prof./Sir Richard Friend, Cavendish Lab, Cambridge University, UK.
Wallace Choy is a fellow of OSA and senior member of IEEE. He has been recognized as Top 1% of most-cited scientists in Thomson Reuter’s Essential Science Indicators (ESI) three years in a row 2014, 2015 and 2016. He has been recognized as prolific researcher on organic solar cells in the index (WFC in physical sciences) in Nature Index 2014 Hong Kong published by Nature. He has been serving a technical consultant of HK-Ulvac (a member of stock-listed Ulvac Corp) since 2005. He has served as editorial board member for Nature Publishing Group of Scientific Reports and IOP Journal of Physics D, senior editor of IEEE Photonics Journal, topical editor of OSA Journal of the Optical Society of America B (JOSA founded in 1917), and guest editor of OSA Journal of Photonic Research, and Journal of Optical Quantum Electronics. He has delivered over 60 invited talks and served as a committee member in internationally industrial and academic conferences organized by various organizations such as IEEE, OSA and Plastic Electronics Foundation.
Dr. Mao-Hua Du is a Senior R&D Staff in the Materials Sciences and Technology Division at Oak Ridge National Laboratory. He received his B.S. in Physics at Fudan University, China, in 1998 and Ph. D in Physics at the University of Florida in 2003. He was a postdoctoral associate at National Renewable Energy Laboratory (Golden, Colorado, 2004-2006) and a National Research Council Research Associate at Naval Research Laboratory (Washington, DC, 2006-2007). He joined Oak Ridge National Laboratory in 2007. His research focuses on electronic structure, optical properties, and defect physics in electronic and optical materials (with applications in photovoltaics, energy efficient lighting, radiation detection, etc.).
Xiaogang LiuDr. Eric Lukosi received hi PhD in Nuclear Engineering in 2012 from the University of Missouri. He is currently an Associate Professor in the Nuclear Engineering Department at the University of Tennessee and is affiliated with the Joint Institute for Advanced Materials. Dr. Lukosi's expertise is in radiation sensor development and application in fields ranging from high energy physics to nuclear security. Dr. Lukosi specializes in the development of semiconductor detectors, such as lithium indium diselenide, diamond, and methylammonium lead tribromide.
-2005, Ph.D LIOS (Linz institute for organic solarcells), J. Kepler University,Linz, Austria. Head: Prof. N.S. Sariciftci 2006-10, Post-doc, Institute for Semiconductor and Solid-State Physics, J. Kepler University, Austria, Head: Prof. G. Bauer 2011- Senior researcher, I-Meet, Erlangen, Germany. Head. Prof. C.J. Brabec.
Guangda NiuDr. R. Radhakrishnan Sumathi is a Vice-head of volume crystals department at Leibnitz-Institute for Crystal Growth (IKZ), Berlin. She is leading and responsible for the semiconductor section, which focuses its niche research and development in elemental and compound semiconductor materials (Si, Ge, III-Vs, II-VIs) for various applications. Dr. Sumathi holds a Ph.D degree (Anna University, Chennai/Madras, India) and also has received a “habilitation” title from Ludwig-Maximilans University (LMU, Munich, Germany), where she is also a faculty at Materials Science and Crystallography institute. She has about 25 years of expertise in crystal growth/materials sciences field and specialised experience in semiconductor materials and devices. Her research interest also covers advanced functional materials. She is very active in many professional societies (IACG, DGKK) and has received many awards (Young Scientist, Young Researcher), the recent one being, Young Achiever Award by Indian Science and Technology Association in 2018. She has over 75 papers in internal journals (peer-reviewed, high impact factor) and/or conferences and has given invited talks in more than 25 meetings. She is a guest editor of Results in Materials (Elsevier publications) and serving as a international committee member in many national/international scientific conferences.
Dr. Yadong XU received his PhD in School of Materials Science & Engineering, Northwestern Polytechnical University in 2010 and is currently a Professor in State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Northwestern Polytechnical University, China. Dr. XU has received many prestigious awards including “Second-class of National Technological Invention”, P.R. China, 2013, “First- class of Scientific and Technical Awards”, Shaanxi Province,2012, “Youth outstanding talent support program" in Shaanxi, China, (2017), Excellent Talents project in Shaanxi Province, China, 2016. His research interests cover development of new semiconductor materials for X/γ-ray detectors, growth of electro-optical crystals for THz application, optical and electrical properties of the semiconductor materials and defect engineering. Dr XU has published more than 70 SCI papers and documented 16 patents.
Obtained PhD degree from National Academy of Sciences of Ukraine in 2007. 2008 - 2013 years Sergii is a PostDoc in JKU Linz, Austria in Prof. Wolfgang Heiss group. In 2013 he joined the group of Prof. Maksym Kovalenko group in ETH Zurich, Switzerland where he is a Senior Research Associate (Oberassistent) since 2018.
The main achievements are for the discovering of perovskite hard radiation and full-colour photo-detectors, optical gain and lasing in perovskite nanocrystal films.