In theory, semiconductor nanocrystals are highly suitable laser materials, not least because the colour of their light is tunable over a wide range. In practice, they are difficult — but not impossible — to deal with.
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Krauss, T. Less excitement for more gain. Nature 447, 385–386 (2007). https://doi.org/10.1038/447385a
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DOI: https://doi.org/10.1038/447385a
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