(Online talk) Structure-Property Tunability Using Chirality and Symmetry Breaking in Hybrid 2D Perovskites
David Mitzi a
a Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC USA
b Department of Chemistry, Duke University, Durham, NC USA
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
València, Spain, 2024 May 12th - 15th
Organizer: Bruno Ehrler
Invited Speaker, David Mitzi, presentation 144
DOI: https://doi.org/10.29363/nanoge.hopv.2024.144
Publication date: 6th February 2024

Hybrid organic-inorganic perovskite (HOIP) semiconductors based on metal halide frameworks offer unprecedented opportunity to tailor structural and materials properties using the full flexibility afforded by the associated inorganic and organic components, and such tunability offers wide-ranging potential for applications including solar cells, light-emitting devices, detectors, transistors and advanced computing devices [1]. In this talk we will focus on examining the role that the organic cation can play in introducing or impacting chirality, symmetry breaking and associated phase transitions within HOIPs, as well as on the resulting chiroptical (e.g., circularly dichroism [2,3]), spin-selective charge transport (e.g., chirality-induced spin selectivity [4]), electronic structure (e.g., spin splitting of the conduction band [5-7]), and melting (e.g., allowing for melt-processed film formation and reversible glass-crystal transitions [8,9])  characteristics of these systems. Recent examples of such symmetry-related tunability highlight the promise of using the organic component to control light, charge and spin within the wide-ranging HOIP family.

Hybrid organic-inorganic perovskite (HOIP) semiconductors based on metal halide frameworks offer unprecedented opportunity to tailor structural and materials properties using the full flexibility afforded by the associated inorganic and organic components, and such tunability offers wide-ranging potential for applications including solar cells, light-emitting devices, detectors, transistors and advanced computing devices [1]. In this talk we will focus on examining the role that the organic cation can play in introducing or impacting chirality, symmetry breaking and associated phase transitions within HOIPs, as well as on the resulting chiroptical (e.g., circularly dichroism [2,3]), spin-selective charge transport (e.g., chirality-induced spin selectivity [4]), electronic structure (e.g., spin splitting of the conduction band [5-7]), and melting (e.g., allowing for melt-processed film formation and reversible glass-crystal transitions [8,9])  characteristics of these systems. Recent examples of such symmetry-related tunability highlight the promise of using the organic component to control light, charge and spin within the wide-ranging HOIP family.

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