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Core‐Shell Upconverting Nanocrystals
This cover shows that critical information regarding the interface of core‐shell upconverting nanocrystals can be revealed (cracked sphere in the foreground) by implementing complementary STEM‐based methods with atomic‐scale resolution (inclined plane in the background). Depending on the shell growth conditions, core‐shell upconverting nanocrystals are characterized...
Advances in controlling energy migration pathways in core‐shell lanthanide (Ln)‐based hetero‐nanocrystals (HNCs) have relied heavily on assumptions about how optically active centers are distributed within individual HNCs. In this article, it is demonstrated that different types of interface patterns can be formed depending on shell growth conditions. Such interface patterns are not only identified...
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