Molecular Design of Low Dimensional Silver Organoselenolate Semiconductors

Metal organochalcogenolates (MOCs) have gained a renewed interest as a novel class of hybrid organic-inorganic semiconductors. In contrast to halide perovskites and transition metal chalcogenides, MOCs have strong covalent bonding between organic and inorganic components, offering a unique platform for tuning excitonic properties. Recently, silver phenylselenolate (AgSePh) has attracted attention because of its multiple exciting properties such as narrow blue luminescence, in-plane anisotropy, large exciton binding energy, earth abundant elemental composition, and a scalable synthesis. In this presentation, we will show a new family of AgSePh derivatives with introduced organic functional groups. With modified organic ligands, morphology transformation from 2D sheet to 1D chain structure was induced. We will discuss the effect of organic functionalization on the optical and electronic properties of AgSePh, and show the application of this knowledge toward designing new MOC compounds with improved capabilities