Photovoltaic contribution of photo-generated excitons in acceptor material of organic solar cells

Monishka Narayan, Jai Singh

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    Abstract

    Contribution of exciton generation in acceptor material to the photovoltaic performance of three bulk-heterojunction organic solar cells (BHJ OSCs), PTB7:PC71BM, P3HT:ICBA and P3HT:PC61BM are studied. Singlet and triplet rates of absorption and dissociation and diffusion lengths are calculated and compared with those when excitons are generated in the donor of these BHJ OSCs. It is found that the rates of absorption and dissociation and diffusion lengths are comparable whether excitons are generated in donor or acceptor of these BHJ OSCs. Therefore, it is proposed that the contribution of exciton generation in acceptor may not be negligible.

    Original languageEnglish
    Pages (from-to)7070-7076
    Number of pages7
    JournalJournal of Materials Science: Materials in Electronics
    Volume28
    Issue number10
    DOIs
    Publication statusPublished - May 2017

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