Stable and large-scale organic–inorganic halide perovskite nanocrystal/polymer nanofiber films preparedviaa greenin situfiber spinning chemistry method

Abstract

Organic-inorganic halide perovskite nanocrystals (PNCs) have shown great advantages in recent years due to their tunable emission wavelengths, narrow full-width-at-half maximum (FWHM) and high photoluminescence quantum yield (PLQY). However, PNCs...

Large-area waterproof and durable perovskite luminescent textiles

“…1b ). Note, the previously reported electrospinning techniques still require to use 2 or 3 nozzles to load each individual ingredient, such as metal halides, inorganic/organic halide salts and polymers, which is complicated and hard to control the electrospinning parameters and reaction process 35 – 38 . In our case, we simply relied on using single-nozzle containing all the ingredients including perovskites, polymers, cyclodextrins and silanes to achieve high-throughput fabrication of high-quality PLTs, which represents a technological advance, especially in terms of reducing fabrication cost and being more compatible to the industrial-scale mass production.…”

“…In recent years, not only being integrated on small-area rigid panels, the state-of-the-art LHP-based light-emitting thin films or devices are also assembled into large-area, flexible and/or wearable electronics 35 – 40 . In particular, the electrospinning technique has been demonstrated as one of the most ideal ways to fabricate perovskite luminescent fibrous membranes 35 – 38 . Unfortunately, the current methodologies were limited to stabilizing the LHPs within a chosen polymer matrix featuring less functional groups, which then exhibited poor mechanical stability caused by weak interfacial interactions.…”

“…We present a simple, single-nozzle electrospinning method that can directly and continuously fabricate PLTs on a large-scale with high production rates of ~1500 cm 2 h −1 . Significantly distinguished to the previous works regarding polymer-encapsulated perovskite composites 35 – 38 , a new class of composited fibers with perovskites robustly encapsulated in polymers, cyclodextrin supermolecules and fluorinated hydrophobic agents was designed. Similar to other reports, the polymer acts as a fibrous matrix for loading perovskites and ensures mechanical flexibility.…”

Encapsulation of Monodisperse Microdroplets in Nanofibers through a Microfluidic–Electrospinning Hybrid Method

“…Microfluidics has been widely employed to generate monodisperse droplets owing to their ability to control and manipulate a small amount of fluids. When coupling microfluidics with high-voltage electrospinning, nanofibers with controllable structures could be produced. − For example, combining microfluidic chips and electrospinning techniques allows the construction of ordered, robust poly­(styrene-methyl-methacrylate-acrylic acid) nanoparticles in polyamide 66 hybrid nanofibers . However, these hybrid works usually tend to build coaxial architecture; nanofibers with well-controllable dispersed microcapsules are still unachievable.…”

Sunflower‐Inspired Light‐Tracking System and Spatial Encryption Imaging based on Linear Flexible Perovskite Photodetector Arrays

“…Recently, as a rising star of optoelectronic materials, perovskites receive great interests for the merits of high adsorption coefficient, flex-compatible, low-temperature crystallinity, and long carrier diffusion length. [3][4][5][6][7][8][9] Many applications are successfully demonstrated, including color imaging and optical communication. [10][11][12][13][14][15][16][17][18] Among them, the development of flexible photodetectors is highly expected from the perspectives of portability, light weight, and excellent strain capacity.…”