Bright and Near-Unity Polarized Light Emission Enabled by Highly Luminescent Cu<sub>2</sub>I<sub>2</sub>-Dimer Cluster-Based Hybrid Materials.
basic_science · Level V
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- Record sourced from PubMed, PMID 33885323.
- Also identified by DOI 10.1021/acs.nanolett.1c01149.
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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 Cu<sub>2</sub>I<sub>2</sub>-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 Cu<sub>2</sub>I<sub>2</sub>-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.