Symposium EQ05—Semiconductor Physics of Halide Perovskites—From Fundamentals to Devices

Organic-inorganic halide perovskites (3D, 2D and 0D) have emerged as a novel semiconductor platform for understanding and discovering the rich structure and property relationship arising from the interaction of organic-inorganic interfaces and assemblies. They are formed with organic and inorganic two- dimensional layers, which self-assemble in solution to form highly ordered periodic stacks. Their properties appear to imbibe the best attributes from classical semiconductors, multi quantum wells (MQWs), 2D materials beyond graphene such as transition metal dichalcogenides and organic semiconductors, which has enabled a large compositional and structural phase space and resulted in the discovery of novel and emergent physical properties. In addition to applications for fabricating efficient and stable solar cells and light emitting diodes, and detectors, new properties and behaviors such as water-stability, light- induced structural dynamics, ferroelectricity, Rashba effect, polarized emission from chiral 2DPKs, single photon emitters, and optical modulators. However, despite these advances, there are serious scientific and engineering challenges, which if resolved may pave the path for optoelectronic and energy conversion technologies with state-of-the-art performance and technologically relevant durability.

This symposium is dedicated to bringing together researchers across the globe from a wide range of disciplines including material science, chemistry, condensed matter physics, surface science, device engineering and reliability physics, light matter interactions and photonics to communicate important recent developments, which address key questions pertaining to the fundamental structure-property relationships and applications using novel experimental and theoretical approaches with special focus on: 1. Understanding and tailoring materials chemistry to obtain high purity thin-films 2. Design principles for the selection of spacer cations ± charge, shape, size and heteroatom 3. Advanced structural, and imaging of perovskites 4. Excitonics and photo-phononics 5. Spintronics and spin-orbitronics 6. Electron transport and device physics 7. Device engineering, interfaces, reliability science.

• Controlled synthesis of halide perovskite from single crystals to thin-films
• Advanced chemical engineering of halide perovskites with tailored physical properties
• Photo-phononics and its correlation with structure and chemistry
• Exciton generation, recombination and transport
• Many-body effects, biexcitons, hot carriers, electron-phonon coupling, exciton-polaritons
• Tailoring defects, dopants, film morphology for efficient light emission
• Proximity induced interactions in halide perovskites and their heterostructures
• Halide perovskite based photonics, optics and lasers
• Spintronics and spin-orbitronics
• Device physics and electron transport
• Scalability, sustainability and reliability science of perovskite based devices and technologies

• Harry Atwater (California Institute of Technology, USA)
• Osman Bakr (King Abdullah University of Science and Technology, Saudi Arabia)
• Jean Christophe Blancon (Rice University, USA)
• Filippo De Angelis (University of Perugia, Italy)
• Letian Dou (Purdue University, USA)
• Jacky Even (University of Rennes, France)
• Guilia Grancini (University of Pavia, Italy)
• Laura Herz (University of Oxford, United Kingdom)
• Jinsong Huang (University of North Carolina at Chapel Hill, USA)
• Deep Jariwala (University of Pennysylvania, USA)
• Antoine Kahn (Princeton University, USA)
• Mercouri Kanatzidis (Northwestern University, USA)
• Hemamala Karunadasa (Stanford University, USA)
• Claudine Katan (Université de Rennes 1, France)
• Jong Hyun Kim (Ajou University, Republic of Korea)
• Bo Ram Lee (Pukyong National University, Republic of Korea)
• Tae-Woo Lee (Seoul National University, Republic of Korea)
• Kiang Ping Loh (National University of Singapore, Singapore)
• Maria Antonietta Loi (University of Groningen, Netherlands)
• Lynn Loo (Princeton University, USA)
• Biwu Ma (Florida State University, USA)
• Barry Rand (Princeton University, USA)
• Bayrammurad Saparov (University of Oklahoma, USA)
• Ted Sargent (University of Toronto, Canada)
• Ruth Shinar (Iowa State University, USA)
• Franky So (North Carolina State University, USA)
• Yana Vaynzof (Technische Universität Dresden, Germany)
• Michael Wong (Rice University, USA)
• Omer Yaffe (Weizmann Institute of Science, Israel)
• William W. Yu (Louisiana State University, USA)
• Ni Zhao (The Chinese University of Hong Kong, Hong Kong)
• Kai Zhu (National Renewable Energy Laboratory, USA)