Abstract
Gold cluster (Au8) coated CdS hybrid nanorods (HNRs), synthesized using a sonication assisted assembly route, exhibit phonon assisted coherent mixing of excitons. As observed from optical absorption, Raman scattering, x-ray diffraction and transmission electron microscopic studies, the Au8 modulates the crystal—and electronic—structure of the CdS nanorods, effecting enhancement of exciton–phonon (e–p) interactions. The e–p interaction and entropy effect mediated phase matching of the excitonic transitions, leading—via cooperative and coherent mixing of the excitons’ color—to the emission of white light, has been confirmed from room temperature and time resolved photoluminescence measurements.
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