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Updated: Mar 12, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Dynamic Coordination Geometry Transformation for Near-Unity PLQY and Photo-Tunable Full-Color Circularly Polarized
Xingrong Quan1, Yixie Chen1, Yihua Yang1
1School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning 530004, China.
Abstract:
The rational design of chiral ligands for perovskite quantum dots (PQDs) and the understanding of their structure-property relationships is challenging. Herein, l/d-proline (l/d-Pro) induces a concentration-dependent coordination transition from monofunctional to bidentate mode, enabling defect passivation and chiral transfer. green chiral PQDs achieve 99.69% photoluminescence quantum yield (PLQY) and emission dissymmetry factor (glum) of -2.1 × 10-3. A light-mediated halide exchange strategy enables full-visible (440-760 nm) emission tuning, enhancing |glum| to 7.1 × 10-3 while maintaining high blue/red PLQYs (88.96%/91.42%) via enhanced octahedral distortion. High-performance full-color circularly polarized light-emitting diodes (CP-LEDs) and white LEDs are fabricated, providing a paradigm for chiral perovskite optoelectronic device design.
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