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As a new type of solution‐processed nano‐laser material, carbon dots (CDs) have shown considerable potential in optical communication, laser displays, micro/nano processing, and biomedicine. Reducing the laser threshold of the gain material is of considerable significance for further development of CDs’ applications in the field of micro/nano lasers. A series of blue‐emissive CDs (B‐CDs) are synthesized...
Centralized Excited States
The decrease in the laser threshold of blue‐emissive carbon dots (B‐CDs) is attributed to the increase in the radiation transition rate and centralized sp3‐related excited state levels, which are favorable for light amplification and population inversion. More details can be found in article number 2207983 by Siyu Lu and co‐workers.
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