Performance enhancement of polymer-based solar cells by induced phase-separation with silica particles

作者: Hao Shen , Néstor E. Valadez-Pérez , Brett Guralnick , Yun Liu , Michael E. Mackay

DOI: 10.1039/C4TC01947D

关键词:

摘要: Adding metallic nanoparticles into bulk-heterojunction, polymer-based solar cells has been proven an effective strategy to enhance light absorption of the active layer and device performance. However, high-energy surfaces on may also affect morphology by influencing phase-separation, which not studied in detail. Here, we show that silica particles embedded will aggregation behavior [6,6]-phenyl C61-butyric acid methyl ester (PCBM) bulk-heterojunction poly(3-hexylthiophene) (P3HT):PCBM. Using a novel graphical technique analyze absolute scattering intensity small angle neutron data, conclusively demonstrate some PCBM migrate away from bulk solution surface upon annealing improve The overall effect is decrease series resistance power conversion efficiency 10 20% relative control group. In contrast utilize plasmon resonance, our results indicate that, even with optically inert particles, induced phase separation result improved device.

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