As shown in the study, after the overgrowth of multi-shells on the core nanocrystals, the QYs were improved to 75–85%, and the stability was significantly enhanced. Even after the phase-transfer experiment, the QYs were still kept above 70%. Using this low-cost, "green" synthesis route, more than 10 g of high-quality core/shell nanocrystals were synthesized successfully in a large-scale reaction. The total cost savings could be as high as 50% compared with synthesis via a selenium phosphine precursor.

There is no doubt that such high-quality core/shell nanocrystals could have potential applications across a wide range of areas including bioimaging, biolabeling, LEDs, solid-state lighting and solar cells.

The team published its work in the journal Nanotechnology.