Light-induced switching in pDTE–FICO 1D photonic structures

Abstract

We propose the design of 1D photonic crystals and microcavities in which fluorine-indium codoped cadmium oxide (FICO) nanocrystal based layers and layers of diarylethene-based polyester (pDTE) are alternated or embedded in a microcavity. The irradiation with UV light results in two different behaviours: i) it dopes the FICO nanocrystals inducing a blue shift of their plasmonic resonances; ii) it changes the real part of the refractive index of the photochromic pDTE polymer. These two behaviours are combined in the proposed photonic structures and can be useful for switchable filters and cavities for light emission.

Solution Processed Polymer-ABX4 Perovskite-Like Microcavities

“…These structures consist of dielectric lattices made of thin film with different refractive indexes, alternated periodically, that interact with light generating specific frequency regions forbidden photon propagation, namely photonic band gaps (PBGs). Microcavities and DBRs were demonstrated for several applications including photon recycling in photovoltaics [36], sensing [35,[37][38][39][40][41][42] and optical switchers [43][44][45]. With regards to emission control, these planar lattices are of interest thanks to the spectral and directional redistribution of the photoluminescence oscillator strength [46], as already demonstrated for polymers and organic dyes [47][48][49][50][51][52][53][54][55] as well as inorganic emitters [54,56].…”

Vanadium oxide metal-insulator phase transition in different types of one-dimensional photonic microcavities

“…In photonic crystals, the periodic modulation of the refractive index in one, two or three dimensions gives rise to energy regions in which light is not transmitted through the crystal. The integration of materials with switchable optical properties in the infrared, such as photochromic polymers (Toccafondi et al, 2014) and infrared plasmonic nanomaterials (Guo et al, 2016;Kriegel et al, 2016), in one-dimensional photonic crystals has been proposed previously (Kriegel and Scotognella, 2018). Furthermore, the deposition of a VO 2 layer onto a onedimensional photonic crystal has been theoretically studied by Rashidi et al (2018) and experimentally studied by Singh et al (Singh et al(2020).…”

One-dimensional structure made of periodic slabs of SiO2/InSb offering tunable wide band gap at terahertz frequency range

“…[5][6][7] There exist numerous reports in which optical features of various kinds of these structures have been investigated. [8][9][10][11][12][13] They have been widely proposed in fabrications of not only light sources such as lasers/diodes [14,15] but also detectors and transducers, [15] all optical filters, mirrors, and switches. [16][17][18][19][20][21][22][23][24][25][26] Nevertheless, these structures are still on tops of attention for new photonic elements design due to their unique characteristics.…”