Riding in the coat tails of developments of single junction and multijunction perovskite solar cells, research on perovskite light emitting diodes (LEDs) have also skyrocketed in recent years. This surge is primarily driven by the facile tunability of optical bandgaps in halide perovskite materials, that can exhibit a wide colour gamut in the ultraviolet to near-infrared range with high luminescence yield and colour purity.
This symposium will bring together the community to discuss the fundamental physics of light emission in a range of halide perovskite materials, report on the recent progress of device efficiencies and also brainstorm on the remaining challenges of stability and scalability. In addition, exciting prospects of optically pumped lasing and single photon emission, shown recently by lowering the structural and/or electronic dimensionality of perovskites, will also be presented. Furthermore, latest updates on perovskite-based light emitting transistors, where the electroluminescence of the channel can be controlled by the gate voltage, will also be provided. On the other hand, by exploiting the favourable attributes of high X-ray absorption and efficient down-conversion into visible photons, emerging halide perovskite-based scintillators have shown quite unprecedented performance for medical imaging, which will also constitute an important focus area for this
symposium.
- Physics of light emission in halide perovskites.
- Lower dimensional perovskites (such as nanocrystals, 2D perovskites etc.)
- Lead-free perovskites.
- Efficiency and stability of perovskite LEDs
- Upscaling approaches for perovskite LEDs (such as thermal evaporation, inkjet printing etc.).
- Perovskite lasing.
- Perovskite single photon emission.
- Perovskite light-emitting transistors.
- Perovskite scintillators.
Sascha is a Tenure-Track Assistant Professor in Physical Chemistry and Head of the Laboratory for Energy Materials at EPFL (Switzerland), while he is also maintaining strong ties with the Harvard community and in particular Winthrop House which he regularly visits as NRT and SCR member.
His team employs light-matter interactions to understand the next generation of soft semiconductors with the overarching goal of maximizing energy efficiency for a sustainable future by unlocking applications ranging from flexible light-weight solar cells & displays all the way to entirely new applications in quantum information processing.
Previously, he was a research group leader and Rowland Fellow at Harvard University. Before starting his lab at Harvard, Sascha studied Chemistry at Heidelberg University (Germany) and completed a PhD in Physics at the University of Cambridge (UK), where he subsequently worked as EPSRC Doctoral Prize Fellow.
Dr. Xinyu Shen is a Postdoctoral Researcher in School of Advanced Materials Science and Engineering at Sungkyunkwan University, specializing in the nano materials and their light-emitting devices. She recieived her Ph.D. from Jilin University, where she focused on highly efficient perovskite nanocrystal light-emitting diodes.
Maksym Kovalenko has been a tenure-track Assistant Professor of Inorganic Chemistry at ETH Zurich since July 2011 and Associate professor from January 2017. His group is also partially hosted by EMPA (Swiss Federal Laboratories for Materials Science and Technology) to support his highly interdisciplinary research program. He completed graduate studies at Johannes Kepler University Linz (Austria, 2004-2007, with Prof. Wolfgang Heiss), followed by postdoctoral training at the University of Chicago (USA, 2008-2011, with Prof. Dmitri Talapin). His present scientific focus is on the development of new synthesis methods for inorganic nanomaterials, their surface chemistry engineering, and assembly into macroscopically large solids. His ultimate, practical goal is to provide novel inorganic materials for optoelectronics, rechargeable Li-ion batteries, post-Li-battery materials, and catalysis. He is the recipient of an ERC Consolidator Grant 2018, ERC Starting Grant 2012, Ruzicka Preis 2013 and Werner Prize 2016. He is also a Highly Cited Researcher 2018 (by Clarivate Analytics).
Iván Mora-Seró (1974, M. Sc. Physics 1997, Ph. D. Physics 2004) is researcher at Universitat Jaume I de Castelló (Spain). His research during the Ph.D. at Universitat de València (Spain) was centered in the crystal growth of semiconductors II-VI with narrow gap. On February 2002 he joined the University Jaume I. From this date until nowadays his research work has been developed in: electronic transport in nanostructured devices, photovoltaics, photocatalysis, making both experimental and theoretical work. Currently he is associate professor at University Jaume I and he is Principal Researcher (Research Division F4) of the Institute of Advanced Materials (INAM). Recent research activity was focused on new concepts for photovoltaic conversion and light emission based on nanoscaled devices and semiconductor materials following two mean lines: quantum dot solar cells with especial attention to sensitized devices and lead halide perovskite solar cells and LEDs, been this last line probably the current hottest topic in the development of new solar cells.
Cesare Soci received Laurea and Ph.D. degrees in Physics from the University of Pavia, in 2000 and 2005. He was a postdoctoral researcher from 2005 to 2006 at the Center for Polymers and Organic Solids of the University of California, Santa Barbara, and from 2006 to 2009 at the Electrical and Computer Engineering Department of the University of California, San Diego. He joined the Nanyang Technological University (NTU) in 2009, where he holds a joint appointment between the Schools of Physical and Mathematical Sciences (SPMS) and Electrical and Electronic Engineering (EEE). At NTU he leads the Optical Spectroscopy of Nanomaterials laboratory, co-directs the Centre for Disruptive Photonic Technologies, and currently serves as the Associate Dean (Research Programmes) of the Graduate College. He is a Fellow of the IPS, OPTICA, and the SPIE.
Dr. Yana Vaynzof is the Chair for Emerging Electronic Technologies at the Technical University of Dresden (Germany) and a Director at the Leibniz Institute for Solid State and Materials Research Dresden. She received a B.Sc. in Electrical Engineering from the Technion – Israel Institute of Technology (Israel) in 2006 and a M. Sc. In Electrical Engineering from Princeton University (USA) in 2008. In 2011, she received a Ph.D. in Physics from the University of Cambridge (UK). Yana was a postdoctoral research associate at the Cavendish Laboratory, University of Cambridge (UK) and an assistant professor at Heidelberg University (Germany) from 2014 to 2019. Yana Vaynzof is the recipient of a number of fellowships and awards, including the ERC Starting Grant, ERC Consolidator Grant, Gordon Wu Fellowship, Henry Kressel Fellowship, Fulbright-Cottrell Award and the Walter Kalkhof-Rose Memorial Prize. She is a Fellow of the Royal Society of Chemistry and the winner of the Energy & Environmental Science Lectureship Award. Her research interests lie in the field of emerging photovoltaics, focusing on the study of material and device physics of organic, quantum dot and perovskite solar cells by integrating device fabrication and characterisation with the application and development of advanced spectroscopic methods.