Abstract
Highly efficient and air-stable inverted organic solar cells were fabricated from solution-processed non-conjugated polyethylenimine ethoxylated as the polyelectrolyte, a zinc oxide bilayer as the electron transport layer, and an active layer of PTB7 and PC71BM.
Funding Information
  • National Research Foundation of Korea (2015H1D3A1066333, NRF-2013M3C1A3065528, NRF-2014R1A1A1003341)

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