Bright and Near-Unity Polarized Light Emission Enabled by Highly Luminescent Cu₂I₂-Dimer Cluster-Based Hybrid Materials

Abstract

As one fundamental property of light, polarization has a huge impact in quantum optics and optoelectronics through light–matter interactions. However, the bright and near-unity polarized light emissions in the visible range by solid crystalline materials are scantly realized. Here, we report well-defined quasi two-dimensional (2D) hybrid crystals based on the linear alignment of Cu2I2-dimer/bidentate ligand hybrid clusters for achieving bright and near-unity linearly polarized light emissions. Using first-principle calculations, we demonstrate that the superaligned transition dipole moments are the key for the observed excellent polarized light emissions. To further enhance the photoluminescence (PL) polarization degree, we fabricate Cu2I2-dimer-based hybrid nanobelts, which display high PL quantum yield (up to 64%) and ultrahigh PL polarization degree (∼0.99). Our reported copper iodine cluster-based luminescent hybrid materials for bright and highly polarized light emissions will have great potential for future quantum optics applications.

Chiral Phosphine–Copper Iodide Hybrid Cluster Assemblies for Circularly Polarized Luminescence

“…Recently, copper iodide (Cu–I) cluster based organic–inorganic hybrid materials have emerged as energy-efficient luminescent materials attributed to their earth abundance, simple preparation, structural flexibility, and high photoluminescent (PL) efficiency, − based on which they are attractive to provide structural chirality and generate CPL via introducing diverse chiral organic ligands . In addition, Cu–I-based hybrid clusters are capable of constructing atom-level assemblies through intermolecular forces among organic ligands for the amplification of CPL.…”

Viewing Aggregation-Induced Emission of Metal Nanoclusters from Design Strategies to Applications

“…Recently, Yao et al worked on a design for highly efficient chiral hybrid copper(I) halides NCs [ 95 , 120 , 121 ]. As shown in Figure 9 a, R/S-Cu 2 I 2 (BINAP) 2 hybrid clusters with a layered conformation were designed and synthesized [ 121 ].…”

Chemical etching strategy to prepare microtubes of a hybrid organic cuprous halide

“…Hybrid organic cuprous halides have efficient luminescence, environmentally-friendly components and fruitful structures. [29][30][31][32][33] In its open ambient state, Cu(I) is prone to disproportionation reactions unless there is a suitable ligand stabilizing the valence of Cu(I). 34,35 For example, hybrid organic cuprous iodide can be synthesized in an ambient environment due to the strong bonding between Cu(I) and I.…”