Impact of Electrodes on Recombination in Bulk Heterojunction Organic Solar Cells.

ABSTRACT: In recent years, the efficiency of organic solar cells (OSCs) has increased to more than 13%, although different barriers are on the way for reaching higher efficiencies. One crucial barrier is the recombination of charge carriers, which can either occur as the bulk recombination of photogenerated charges or the recombination of photogenerated charges and electrodic induced charges (EICs). This work studies the impact of EICs on the recombination lifetime in OSCs. To this end, the net recombination lifetime of photogenerated charge carriers in the presence of EICs is measured by means of conventional and newly developed transient photovoltage techniques. Moreover, a new approach has been introduced to exclusively measure the bulk recombination lifetime, i.e., in the absence of EICs; this a

SUBMITTER: Rahimi Chatri A 

PROVIDER: S-EPMC5997384 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature