Thieno[3,2-b]indole-based hole transporting materials for perovskite solar cells with photovoltages exceeding 1.11 V†
Abstract
Four new hole transporting materials (HTMs), M107–M110, based on thieno[3,2-b]indole cores have been designed and employed in perovskite solar cells. The perovskite solar cells based on M109 exhibit a leading efficiency of 18.14% with a photovoltage over 1.11 V.