Plasmon-coupled Au-nanochain functionalized PEDOT:PSS for efficient mixed tin–lead iodide perovskite solar cells†
Abstract
Au nanochains with a coupled plasmonic nanostructure were first introduced into PEDOT:PSS used as a hole transport layer to fabricate mixed tin–lead PSCs. The improved electrical properties and the promotion of optical absorption contributed to a high PCE of 19.2%. Moreover, the PSCs show substantial enhancement in stability.