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

Monishka Narayan; Jai Singh

doi:10.1007/s10854-017-6362-3

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 language	English
Pages (from-to)	7070-7076
Number of pages	7
Journal	Journal of Materials Science: Materials in Electronics
Volume	28
Issue number	10
DOIs	https://doi.org/10.1007/s10854-017-6362-3
Publication status	Published - May 2017

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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.",

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AB - 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.

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

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