The talk will summarise progress in the development of conjugated donor-acceptor polymers (see Figure 1) for use in blends with solution processable fullerene acceptor derivatives for application as the active layer in bulk heterojunction organic solar cells. In designing these polymers the HOMO-LUMO gap must be optimized for light absorption at the emission maximum of the solar spectrum and the energy difference between the HOMO of the donor polymer and the LUMO of the acceptor fullerene should ideally be of the order of 1 eV. The presentation will summarize progress towards a laboratory-based device exhibiting an energy conversion efficiency in excess of 10%.Bis-indene adducts of C-70 have been employed as efficient electron accepting components in bulk heterojunction solar cells. The effect on device efficiency of a poly(3-hexylthiophene) acceptor in combination with a single crystalline bis-indene C-70 adduct (compared with a mixture of isomers) will be described.Finally progress will be presented on the development of fully printed bulk heterojunction solar cell modules.

Conjugated polymers for printed solar cells

248th National Meeting (2014)

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