Symposium EL10-Advances in the Fundamental Understanding of Halide Perovskites

Halide perovskites have emerged as a new class of semiconductors with exceptional material properties, making them promising candidates for a plethora of optoelectronic applications. Despite their rapid development, halide perovskites remain highly enigmatic, simultaneously featuring properties reminiscent of organic and traditional inorganic semiconductors. The origin and extent of novel features, such as defect tolerance, bright-dark exciton level inversion, high ion mobility, as well as chiroptical and chiral-induced electronic behaviours have not been fully understood. To date, a lack of deep insight into the interplay between structure, morphology, and optical and electronic properties impedes the further advancement of halide perovskites. This symposium will be a platform for researchers whose work addresses underlying fundamental material aspects. Research topics covered in the symposium will include, among others, the latest advances in photophysics, charge carrier transport, ultrafast spectroscopy, band-structures, and phonon-carrier interaction, role of defects, and mapping/imaging techniques. As the prevalence of individual features can depend on the perovskite morphology, submitted abstracts may focus on bulk-like 3D thin films and single crystals or explore low-dimensional structures such as 2D Ruddlesden-Popper phases or nanocrystals. Sessions focusing on the theoretical description of these phenomena and the development of new computational methods and approaches, for example, machine learning, will complement the experimental parts of this symposium.

Topics will include:

Experimental & computational characterization of dynamic properties and charge transport in halide perovskites
Ultrafast processes in perovskite materials (e.g., hot carriers and localization, electron-phonon interactions, polaron formation, structural dynamics, phase transitions)
Micro- and nano-scale imaging of perovskites using optical probes (pump-probe, photoluminescence) and non-optical probes (electron, x-ray, neutron, and scanning probe microscopy)
Role of defects, impurity doping, and mobile ions on fundamental material properties and device performances
Excitons, phonons, polarons, spins, and magnons realized in 3D and 2D perovskites
Interplay of chirality and spin in halide perovskites
Fundamental insights into low-dimensional perovskites including nanocrystals, layered perovskites, 2D heterostructures, and nanoplatelets
Understanding the interfaciale processes of perovskite materials
Band structure calculations and theoretical modelling of optoelectronic properties
Emerging properties of perovskites, including ferroelectricity, spintronics, bulk photovoltaics, memristor and ionic conductivity
Perovskite-derived materials, including metal halide hybrids, and non-lead-halide based hybrid organic-inorganic perovskites

Invited Speakers:

Mahshid Ahmadi (The University of Tennessee, Knoxville, USA)
Wei Bao (Rensselaer Polytechnic Institute, USA)
Matthew Beard (National Renewable Energy Laboratory, USA)
Volker Blum (Duke University, USA)
Juan-Pablo Correa-Baena (Georgia Institute of Technology, USA)
Letian Dou (Purdue University, USA)
Jinsong Huang (University of North Carolina at Chapel Hill, USA)
Song Jin (University of Wisconsin–Madison, USA)
Mercouri Kanatzidis (Northwestern University, USA)
Maksym Kovalenko (ETH Zürich, Switzerland)
Linn Leppert (University of Twente, Netherlands)
Annamaria Petrozza (Istituto Italiano di Tecnologia, Italy)
Diana Qiu (Yale University, USA)
Tze Chien Sum (Nanyang Technological University, Singapore)
Michael Toney (University of Colorado Boulder, USA)
Yiying Wu (The Ohio State University, USA)
Omer Yaffe (Weizmann Institute of Science, Israel)
Yanfa Yan (The University of Toledo, USA)
Qiuming Yu (Cornell University, USA)
Yuanyuan Zhou (The Hong Kong University of Science and Technology, Hong Kong)