Solution Processed Polymer-ABX4 Perovskite-Like Microcavities

Abstract

Thanks to solution processability and broad emission in the visible spectral range, 2D hybrid perovskite-like materials are interesting for the realization of large area and flexible lighting devices. However, the deposition of these materials requires broad-spectrum solvents that can easily dissolve most of the commercial polymers and make perovskites incompatible with flexible photonics. Here, we demonstrated the integration of broadband-emitting (EDBE)PbCl4 (where EDBE = 2,2-(ethylenedioxy)bis(ethylammonium)) thin films with a solution-processed polymer planar microcavities, employing a sacrificial polymer multilayer. This approach allowed for spectral and angular redistribution of the perovskite-like material, photoluminescence, that can pave the way to all-solution-processed and flexible lightning devices that do not require complex and costly fabrication techniques.

High Refractive Index Inverse Vulcanized Polymers for Organic Photonic Crystals

“…Normal incidence reflectance and angle resolved transmittance measurements were collected with an optical-fiber setup coupled with a charged coupled device spectrometer (Avantes AvaSpec-2048, 200−1150 nm, resolution 1.4 nm) (Avantes, Apeldoorn, Netherlands) and a deuterium−halogen Micropak DH2000BAL as a white light source, as previously described [44]. The optical response of the multilayered structure was modelled by using a Matlab ® home-made software based on the transfer matrix method (TMM) formalism that was reported in [2].…”

Thin Polymer Films: Simple Optical Determination of Molecular Diffusion Coefficients

“…This phenomenon also leads to label-free selectivity to a variety of analytes, [15][16][17][18][19][20][21] and makes these structures effective sensors and actuators, [22][23] besides their most common applications. [22][23][24][25][26][27][28][29][30][31][32][33] The dynamic of the spectral changes in the diffraction pattern during the intercalation of a molecular species, also allows the use of classical models to estimate diffusion coefficient values full agreement with gravimetric data. 34 These structures could then be used as integrated smart sensing tags in packaging system, but possess some disadvantages related to implementation within packaging systems.…”

“…The diffusion of an analyte within the multilayer can swell polymers, modifying the diffraction pattern proportionally to the mass intake, and with kinetics depending on the polymer-analyte chemico-physical interactions. This phenomenon also leads to label-free selectivity to a variety of analytes − and makes these structures effective sensors and actuators, , besides their most common applications. − The dynamics of the spectral changes in the diffraction pattern during the intercalation of a molecular species, also allows the use of classical models to estimate diffusion coefficient values in full agreement with gravimetric data . These structures could then be used as integrated smart sensing tags in packaging systems but possess some disadvantages related to implementation within packaging systems.…”

Polymeric Planar Microcavities Doped with a Europium Complex

“…In addition, these systems are highly versatile. Indeed, all-polymer structures have already been demonstrated in coupling with several kinds of emitters including, besides conjugated molecules and polymers [36][37][38], inorganic nanocrystals [39][40][41][42], J-aggregates [43] and perovskites [44,45].…”