Photoluminescence Detection of Polytype Polarization in r-MoS₂ Enabled by Asymmetric Dielectric Environments.

ABSTRACT: The rhombohedral (r) polytypes of transition metal dichalcogenides (TMDs) constitute a class of 2D ferroelectric materials, where lateral shifts between parallel layers induce reversible out-of-plane polarization. This emerging field, known as SlideTronics, holds significant potential for next-generation electronic and optoelectronic applications. Previous research has extensively studied how electrical and chemical doping affects excitonic signatures in conventional 2H-TMDs and how dielectric environments influence their optical properties. However, the impact of intrinsic polarization of these ferroelectric materials in asymmetric dielectric environments remains largely unexplored. Here, we demonstrate a striking polarization-dependent photoluminescence (PL) contrast of up to 400%

SUBMITTER: Kizel I 

PROVIDER: S-EPMC12530055 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature