Organic solar cells with improved photocurrent

摘要

The present disclosure is an organic solar cell including a heterojunction structure formed by a first organic donor layer and a first organic acceptor layer, and further comprising a second organic acceptor layer adjacent to the first organic acceptor layer and / or A second organic donor layer adjacent to the first organic donor layer is included. The materials of the first acceptor layer and the second acceptor layer are selected so that exciton is decomposed by charge transfer at the interface and exciton energy transfer occurs at the interface. The materials of the first donor layer and the second donor layer are selected so that exciton is decomposed by charge transfer at the interface and exciton energy transfer occurs at the interface. The organic solar cell of the present invention has high short circuit current density, good open circuit voltage, and good fill factor.