Researchers at Institute for Molecular Science in Japan report that organic solar cells (OSCs) with high mobility and highly crystalline donor (D) and acceptor (A) materials were able to reduce an open-circuit voltage (VOC) loss. The origin of the high VOC was that the highly crystalline D/A interface reduced the energy loss related to charge recombination. The results demonstrate that careful design of the D/A interface enables high power conversion efficiencies in OSCs.
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Source: Phys.org