Abstract
Photonic crystals (PCs) are promising structures for the modulation and enhancement of fluorescent emissions, however, there is still a lack of systematic investigation on the fluorescence of perovskite nanocrystals (PNCs) coupling with different PCs. In this work, the blue emitting PNCs are coated on three typical PCs, i.e. biological Menelaus butterfly wings (MBWs), hexagonal closely-packed SiO2 nanoparticles, and TiO2 nanotubes array, which show fluorescence enhancement factors of 5.14, 3.38, and 3.43, respectively. The fluorescence enhancement is jointly attributed to the increased recombination rate caused by the near field effect and the enhanced extraction of emission due to the overlap of the leaky mode of the PCs with the emission wavelength of the PNCs. The higher enhancement factor of the MBWs is ascribed to the fluorescent proteins and melanin. Moreover, fluorescence intensity of the PNCs on all the three PCs strongly depends on the observation angle, which will enable their applications in anti-peeping screen and anti-counterfeiting pattern.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.