Cation Effect on Anion Exchange in CsPbX3 (X = Cl, Br, I) Perovskite Nanocrystals

Abstract

Colloidal quantum dot and nanocrystals have been shown to be promising materials for device applications because of theirunique size-dependent properties and solution processability. We present general methods to engineer theelectronic, optoelectronic, electromechanical, and electrothermal properties of nanocrystals through theirsurface and interface engineering. Unconventional materials design and strategy are introduced tofabricate semiconducting devices such as field effect transistors, photodetectors, solar cells, and wearablesensors including temperature sensors, strain sensors, and pressure sensors. This technique provides apathway for designing low cost, high performance, and multifunctional electronic skins or wearabledevices.