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- W2889639238 abstract "Indium phosphide colloidal quantum dots (QDs) are emerging as an efficient cadmium-free alternative for optoelectronic applications. Recently, syntheses based on easy-to-implement aminophosphine precursors have been developed. We show by solid-state nuclear magnetic resonance spectroscopy that this new approach allows oxide-free indium phosphide core or core/shell quantum dots to be made. Importantly, the oxide-free core/shell interface does not help in achieving higher luminescence efficiencies. We demonstrate that in the case of InP/ZnS and InP/ZnSe QDs, a more pronounced oxidation concurs with a higher photoluminescence efficiency. This study suggests that a II–VI shell on a III–V core generates an interface prone to defects. The most efficient InP/ZnS or InP/ZnSe QDs are therefore made with an oxide buffer layer between the core and the shell: it passivates these interface defects but also results in a somewhat broader emission line width." @default.
- W2889639238 created "2018-09-27" @default.
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- W2889639238 date "2018-09-12" @default.
- W2889639238 modified "2023-10-01" @default.
- W2889639238 title "Interfacial Oxidation and Photoluminescence of InP-Based Core/Shell Quantum Dots" @default.
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- W2889639238 doi "https://doi.org/10.1021/acs.chemmater.8b03117" @default.
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