Chiral Perovskites for Next‐Generation Photonics: From Chirality Transfer to Chiroptical Activity. Issue 47 (22nd April 2021)

• Record Type: Journal Article
• Authors: Ma, Sunihl; Ahn, Jihoon; Moon, Jooho
• Is Part Of: Advanced materials. Volume 33:Issue 47(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-04-22
• Subjects: chiral perovskites -- chirality transfer mechanism -- circular dichroism -- circularly polarized luminescence; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202005760
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: Organic–inorganic hybrid halide perovskites (OIHPs) are commonly used as prototypical materials for various applications, including photovoltaics, photodetectors, and light‐emitting devices. Since the chiroptical properties of OIHPs are deciphered in 2017, chiral OIHPs have been rediscovered as new hybrid systems comprising chiral organic molecules and achiral inorganic octahedral layers. Owing to their exceptional optoelectrical properties and structural flexibility, chiral OIHPs have received a considerable amount of attention in chiral photonics, chiroptoelectronics, spintronics, and ferroelectrics. Despite their intriguing chiral properties, the transfer mechanism from chiral molecules to achiral semiconductors has not been extensively investigated. Furthermore, an in‐depth understanding of the origin of chiroptical activity is still elusive. In this review article, recent advances in the chiroptical activities of chiral OIHPs and polarization‐based devices adopting chiral OIHPs are comprehensively discussed, and insight into the underlying chirality transfer mechanism based on theoretical considerations is provided. This comprehensive survey, with an emphasis on the chirality transfer mechanism, will help readers understand the chiroptical properties of OIHPs, which are crucial for the development of spin‐based photonic and optoelectronic devices. Additionally, promising strategies to exploit the potential of chiral OIHPs are also discussed. Abstract : Chiral perovskites have attracted a considerable amount of attention in chiral photonics. Despite their exceptional dissymmetric optical behavior, a clear understanding of their chirality transfer mechanism is still elusive. The underlying chirality‐transfer mechanism is elucidated based on theoretical considerations, while suggesting insightful perspectives. Additionally, promising strategies to exploit the potential of chiral perovskites are also discussed.