It's quite clear that things aren't going so well with this Covid-19 pandemic. I mean, it's bad, and it seems to be getting worse. The number of infected humans is just getting stupid-large. As of ...
Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS Based on the simple consideration that if no nonradiative recombination loss, in the log-log plot like Fig. 1c, ...
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