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Mirror-symmetric Magnetic Circularly Polarized Luminescence From CdS/ZnS Core-shell Quantum Dots: Faraday Effect In The Photoexcited State
Published 2021 · Materials Science
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Abstract Ambidextrous magnetic circularly polarized luminescence (MCPL) is observed for the first time from five kinds of achiral soluble diamagnetic CdS/ZnS core-shell quantum dots in toluene and aqueous solutions, dispersed in poly(methyl methacrylate) film, and as solid powders when subjected to external north-up and south-up magnetic fields of 1.6 Tesla. The magnitude of MCPL, gMCPL, is on the order of |gMCPL| = 10–3 between 400 and 460 nm. The sign of these MCPL spectra is controlled solely by the direction of the magnetic field.