Four‐Terminal Tandem Based on a PM6:L8‐BO Transparent Solar Cell and a 7 nm Ag Layer Intermediate Electrodedoi:10.1002/solr.202300728SOLAR cellsPHOTOVOLTAIC power systemsELECTRODESLIGHT absorptionTo overcome transmission and thermalization losses from single‐junction solar cells,...