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Conjugated polymeric zwitterions as efficient interlayers in organic solar cells
Feng Liu1, Zachariah A Page, Volodimyr V Duzhko
1Department of Polymer Science & Engineering Conte Center for Polymer Research 120 Governors Drive, University of Massachusetts, Amherst, MA, 01003, USA.
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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