Nature Communications (Jan 2021)
High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor
Abstract
Development of tandem organic solar cells has been limited by the choice of near-infrared absorbing materials for the rear cell. Here, the authors report a simple strategy to extend the conjugation length of acceptor Y6 and broaden its absorption range to near-infrared region. A tandem organic solar cell with efficiency of 16.4% was achieved.