Design Rules for Donors in Bulk‐Heterojunction Solar Cells—Towards 10 % Energy‐Conversion Efficiency | Zendy

Scharber M. C. | Zendy; Mühlbacher D. | Zendy; Koppe M. | Zendy; Denk P. | Zendy; Waldauf C. | Zendy; Heeger A. J. | Zendy; Brabec C. J. | Zendy

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Design Rules for Donors in Bulk‐Heterojunction Solar Cells—Towards 10 % Energy‐Conversion Efficiency

Author(s) -

Scharber M. C.,

Mühlbacher D.,

Koppe M.,

Denk P.,

Waldauf C.,

Heeger A. J.,

Brabec C. J.

Publication year - 2006

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.200501717

Subject(s) - materials science , conjugated system , polymer solar cell , photovoltaic system , organic solar cell , polymer , band gap , heterojunction , energy conversion efficiency , open circuit voltage , hybrid solar cell , optoelectronics , solar cell , fullerene , chemical engineering , voltage , organic chemistry , composite material , chemistry , electrical engineering , engineering

For bulk‐heterojunction photovoltaic cells fabricated from conjugated polymers and a fullerene derivative, the relation between the open‐circuit voltage ( V oc ) and the oxidation potential for different conjugated polymers is studied. A linear relation between V oc and the oxidation potential is found (see figure). Based on this relation, the energy‐conversion efficiency of a bulk‐heterojunction solar cell is derived as a function of the bandgap and the energy levels of the conjugated polymer.

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