| CPC C01G 15/003 (2013.01) [B82Y 20/00 (2013.01); B82Y 30/00 (2013.01); C01P 2002/01 (2013.01); C01P 2002/72 (2013.01); C01P 2002/82 (2013.01); C01P 2004/04 (2013.01); C01P 2004/64 (2013.01); C01P 2006/60 (2013.01)] | 20 Claims | 

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               1. Core-shell In1-xGaxP nanocrystals, each comprising an In1-xGaxP core consisting of only In1-xGaxP alloy and having a surface, where 0.2≤x≤0.85, and a ZnS shell on the surface of the In1-xGaxP core, wherein the core-shell In1-xGaxP nanocrystals absorb blue light and emit green or red photoluminescence, the green or red photoluminescence characterized by a photoluminescence peak maximum in the range from 490 nm to 640 nm and a photoluminescence peak full-width-half-maximum of 60 nm or lower at a temperature of 25° C. 
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