4.7 Article

A nonfullerene acceptor for wide band gap polymer based organic solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 52, Issue 3, Pages 469-472

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc08023a

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Funding

  1. NSF of China [91233205]
  2. Program for Changjiang Scholars and Innovative Research Team in University
  3. Fundamental Research Funds for the Central Universities

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A new 1,8-naphthalimide based planar small molecular acceptor and two benzothiadiazole based wide band gap (WBG) polymer donors P1 and P2 were synthesized for nonfullerene organic photovoltaic cells (OPVs). Devices based on fluorinated polymer P2 achieved a highly improved PCE of 3.71% with an open circuit voltage (V-oc) of 1.07 V, which is beyond the currently known levels for nonfullerene OPVs with the V-oc higher than 1 V.

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