Biexciton lifetimes >10 ns in CdZnSe/CdS quantm dots, much longer than other nanocrystals, are achieved by size and composition gradient control.
Significance and Impact
Long biexciton lifetimes enable bright X-ray scintillation, broadband optical gain, and low-threshold lasers from a solution-processable material.
- Time-resolved spectroscopy, laser cavity measurement, and electron microscopy was performed at CNM
- Scintillation and imaging performed at APS
- Synthesis was conducted at UIC.
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