Abstract
We report on the controlled growth of novel BN-coated Ca1−xSrxS:Eu nanowires via a solid–liquid–solid process. The Ca1−xSrxS solid solution forms as one-dimensional nanowires and has been coated with homogeneous protective BN nanolayers. The structure and luminescence properties of this new nanocomposite have been systematically investigated. High-spatial-resolution cathodoluminescence investigations reveal that effective red color tuning has been achieved by tailoring the composition of the Ca1−xSrxS nanowires. Moreover, codoping of Ce3+ and Eu2+ in the CaS nanowire can induce energy transfer in the matrix and make it possible to obtain enhanced orange color in the nanowires. The BN-coated Ca1−xSrxS:Eu solid-solution nanowires are envisaged to be valuable red-emitting nanophosphors and useful in advanced nanodevices and white LEDs.
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