All-inorganic halide perovskite CsPbBr₃: a DFT study of a self-powered formaldehyde sensor

Abstract

A CH2O/CsPbBr3 adsorption system with high adsorption energy (−0.69 eV) and charge transfer (0.398 e) is reported.

All-inorganic lead halide perovskites for photocatalysis: a review

“… 240–246 The all-inorganic lead-halide perovskite materials generate electron–hole pairs by absorbing solar energy, and the generated electrons can reduce CO 2 to high value-added chemicals such as CO, 247 CH 4 , 248 CH 3 OH, 249 HCHO, 250 HCOOH, 196 and C 2 H 4 . 251 …”

Proposals for gas-detection improvement of the FeMPc monolayer towards ethylene and formaldehyde by using bimetallic synergy

“…Biosensors and optical sensors possess the ability to detect targets by monitoring changes in the refractive index or utilizing the photonic spin Hall effect, 29–31 offering advantages such as stability, high precision, and exceptional sensitivity. In contrast, gas sensors primarily identify targets by detecting variations in conductivity, 32,33 magnetic moment, 34 or work function, 35 thereby offering advantages of affordability, ease of use, and sensitivity. Relative to inorganic 2D gas-sensitive materials, 2D organic metal phthalocyanine (MPc) semiconductors exhibit a π-conjugated structure 36 and have the ability to coordinate with various metal ions, indicating their significant potential applications in VOC gas-sensitive materials.…”

A first principles study of RbSnCl3 perovskite toward NH3, SO2, and NO gas sensing

“… 32 Liu et al studied the sensitivity of CsPbX 3 (X = I, Br, and Cl) via density functional theory (DFT) calculation, which revealed strong adsorption of CH 2 O gas on CsPbBr 3 . 33 Aranthady et al reported that a La 0.6 Ca 0.4 FeO 3 perovskite thin film showed enhanced sensitivity for SO 2 gas detection. 34 According to the experimental report of Marikutsa et al , BaSnO 3 nanocrystals showed high sensitivity for SO 2 gas.…”

“…27 Various organic/inorganic perovskites have shown remarkable toxic gassensing properties both computationally and experimentally. [28][29][30][31][32][33][34][35][36] Paper-based sensors of CH 3 NH 3 PbI 3 (MAPI) perovskite showed a high sensitivity toward NH 3 gas. 28 NbWO 6based perovskite thin sheets showed strong interaction with H 2 S gas at low temperatures.…”