Fig. 1From: Water-stable, biocompatible, and highly luminescent perovskite nanocrystals-embedded fiber-based paper for anti-counterfeiting applicationsImages of PCL and PCL-perovskite fibers. a Low and b High-resolution SEM image of the PCL fibers, c Low and d High-resolution SEM image of the PCL-perovskite fibers. e TEM and f Fluorescent images of the PCL-perovskite fibersBack to article page