Tandem Organic Solar Cells: Recent Progress and Challenge

Quantifying Dual-Direction Energy Harvesting in Twisted Perylene Nonfullerene Acceptor Organic Photovoltaics

“…Much research has been dedicated to optimizing spectral overlap between the absorption of OPV material blends and the AM1.5G solar spectrum. In many cases, this has been achieved by adding additional components to the OPV material blend to form ternary − or even quaternary , heterojunctions or tandem architectures. , However, this can complicate device morphology, energetics, and photophysics. A more straightforward strategy is to choose donor and acceptor materials with complementary absorption profiles, ensuring maximum spectral overlap of the blend with the solar spectrum while retaining the simplicity of the binary bulk heterojunction.…”