CsPbBr₃ perovskite nanocrystals as highly selective and sensitive spectrochemical probes for gaseous HCl detection

Abstract

A rapid and facile gaseous anion-exchange reaction between CsPbBr3 perovskite nanocrystals and HCl vapor was carried out under the ambient conditions.

All‐Inorganic Halide Perovskites for Optoelectronics: Progress and Prospects

“…On the one hand, changing the halide compositions of nanocrystals is an effective method to obtain IMH perovskites with different bandgaps and optical absorptions . To achieve this goal, several studies have reported the synthesis of different colloidal CsPbX 3 nanocrystals by adding different or mixed PbX 2 salts in the process of the reaction .…”

Instantaneous, room-temperature, open-air atmosphere, solution-phase synthesis of perovskite quantum dots through halide exchange employing non-metal based inexpensive HCl/HI: ensemble and single particle spectroscopy

“…We have compared our result with those of two of the recently reported studies. 21,47 First, in these two studies, the authors have synthesized CsPbBr 3 via the hot-injection method under an inert atmosphere condition. This is different from the way we have synthesized CsPbBr 3 , i.e., via the IRTOA method.…”

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

“…5 More recently, metal halide perovskites, which demonstrate attractive opto-electronic properties for photovoltaic applications, 24 have also been tested as sensing materials. In this case, reversible variations of their uorescence, phosphorescence or chemical resistivity upon applying an external stimulus due to intercalation processes, surface absorption, trap passivation or ion exchange have been reported and used for temperature, 25 humidity, 26-28 gas [29][30][31][32][33][34][35][36] and metal ion [37][38][39] sensing.…”

“…35 Despite the large variety of colloidal synthesis procedures for nanomaterials of high crystallinity quality and nely tuned size, shape, and composition, [40][41][42][43][44][45] only a few examples have been reported for sensing applications by using such materials. Among them, nanostructured metal halide materials have been used for sensing metal ions (copper or mercury), 37,39 gases (hydrochloric acid or oxygen) 33,34 and humidity. 26 According to our knowledge there is no sensor based on metal halide nanostructures for ozone gas sensing.…”