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Core@shell Nanocrystals
In article number 2303621, Gabriele Saleh, Luca De Trizio, Liberato Manna, and co‐workers report the synthesis of near‐infrared‐emitting InAs@ZnSe core@shell nanocrystals with high photoluminescence quantum yield (PLQY). The high PLQY stems from the in situ formation of an In–Zn–Se interlayer which plays a key role in dampening the strain between the InAs core and the ZnSe...
InAs‐based nanocrystals can enable restriction of hazardous substances (RoHS) compliant optoelectronic devices, but their photoluminescence efficiency needs improvement. We report an optimized synthesis of InAs@ZnSe core@shell nanocrystals allowing to tune the ZnSe shell thickness up to seven mono‐layers (ML) and to boost the emission, reaching a quantum yield of ≈70% at ≈900 nm. It is demonstrated...
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