Conjugated polymeric zwitterions as efficient interlayers in organic solar cells.

Liu, Feng; Page, Zachariah A; Duzhko, Volodimyr V; Russell, Thomas P; Emrick, Todd · Adv Mater · 2013

basic_science · Level V

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Abstract

Conjugated polymeric zwitterions, when utilized as interlayer materials in bulk heterojunction organic solar cells, lead to significantly enhanced power conversion efficiencies. The electrostatic model of self-aligning dipolar side groups in the vicinity of the metal surface rationalizes the effects of reduced cathode work function, a key factor behind the observed enhanced efficiency.

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