Environment-Induced Reversible Modulation of Optical and Electronic Properties of Lead Halide Perovskites and Possible Applications to Sensor Development: A Review

Abstract

Lead halide perovskites are currently widely investigated as active materials in photonic and optoelectronic devices. While the lack of long term stability actually limits their application to commercial devices, several experiments demonstrated that beyond the irreversible variation of the material properties due to degradation, several possibilities exist to reversibly modulate the perovskite characteristics by acting on the environmental conditions. These results clear the way to possible applications of lead halide perovskites to resistive and optical sensors. In this review we will describe the current state of the art of the comprehension of the environmental effects on the optical and electronic properties of lead halide perovskites, and of the exploitation of these results for the development of perovskite-based sensors.

Fast‐Response Oxygen Optical Fiber Sensor based on PEA2SnI4 Perovskite with Extremely Low Limit of Detection

“…[ 26 , 27 ] Because of their high surface‐to‐volume ratio and the low inherently redox potential of the Sn(II)/Sn(IV) couple, [ 28 ] Sn‐based perovskites could be a promising candidate as oxygen‐sensitive material for oxygen sensing. [ 29 , 30 , 31 , 32 , 33 ] Phenylethylammonium tin iodide (PEA 2 SnI 4 ) is a typical 2D‐layered Sn‐based perovskites with moderate stability against heating, light, and moisture. [ 34 , 35 ] In the present work, we demonstrate the first reversible halide perovskite‐based oxygen optical fiber sensor by combining PEA 2 SnI 4 and TFBG.…”

Local Morphology Effects on the Photoluminescence Properties of Thin CsPbBr3 Nanocrystal Films

“…Moreover, very fast and strong improvements in the performance of perovskitebased optoelectronic and photonic devices, including LEDs [1,2], solar cells [3][4][5][6][7], optically pumped active waveguides and lasers [8][9][10][11][12], and optical sensors [13,14], have been obtained in the last few years.…”

Sensing Utilities of Cesium Lead Halide Perovskites and Composites: A Comprehensive Review

“…CsPbX 3 (X = Cl, Br, and I) and composites can degrade rapidly when exposed to air moisture, elevated temperature, humid conditions, etc., thereby limiting their sensing utility in harsh conditions [ 236 , 237 , 238 ].…”