Chinese Academy Sciences

Reaction-dependent coffee-ring-regulating technique in spray-coating perovskite
When droplets having non-volatile solutes completely dry on substrates, the fluid moves exterior by means of capillary force. Subsequently, the solutes are carried to the periphery of the droplets and also create "coffee rings" after drying out. This is known as the coffee ring result (CRE).
Nov 3, 2021 // Technology, China, Asia, solar cell, perovskite, Chinese Academy Sciences, Wuhan University of Technology