Graphene-Templated Achiral Hybrid Perovskite for Circularly Polarized Light Sensing.

ABSTRACT: This study points out the importance of the templating effect in hybrid organic-inorganic perovskite semiconductors grown on graphene. By combining two achiral materials, we report the formation of a chiral composite heterostructure with electronic band splitting. The effect is observed through circularly polarized light emission and detection in a graphene/α-CH(NH₂)₂PbI₃ perovskite composite, at ambient temperature and without a magnetic field. We exploit the spin-charge conversion by introducing an unbalanced spin population through polarized light that gives rise to a spin photoconductive effect rationalized by Rashba-type coupling. The prepared composite heterostructure exhibits a circularly polarized photoluminescence anisotropy g_CPL

SUBMITTER: Volochanskyi O 

PROVIDER: S-EPMC11450682 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature