Open AccessUpconversion photoluminescence of perovskite nanoparticles encapsulated in porous sub-micron spheres supporting Mie resonances.
Author(s) -
Mikhail A. Masharin,
Oleksii O. Peltek,
Pavel M. Talianov,
Лев Е. Зеленков,
Mikhail Zuyzin,
Sergey Makarov
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2015/1/012089
Subject(s) - photoluminescence , materials science , photon upconversion , nanophotonics , fabrication , optoelectronics , nanoparticle , photovoltaics , nanotechnology , perovskite (structure) , dielectric , chemical engineering , luminescence , photovoltaic system , medicine , ecology , alternative medicine , pathology , engineering , biology
Currently, halide perovskites are very perspective materials not only for photovoltaics but also for nanophotonic and especially nonlinear optics. These materials have already demonstrated high two-, three- and many- photon absorption coefficients, strong Kerr-nonlinearity, and high-efficient second harmonic generation. Easy and cheap fabrication gives halide perovskites a wide area for scientific research and engineering applications. However, to achieve the stability of perovskites is still a challenging task, which scientific community is working on. In this work, we study a new form of encapsulation of perovskite nanoparticles in sub-micron porous dielectric nanospheres. Due to small pores in such spheres, perovskites are not only protected from external factors, but also are confined in size, which brings several features in the photoluminescence emission. We also show resonant properties of spherical sub-micron particles, which can be used for enhancing upconversion photoluminescence intensity.