Efficient inverted polymer solar cells integrated with a compound electron extraction layer

Zhong Sheng Ma, Qian Kun Wang, Chi Li, Yan Qing Li, Dan Dan Zhang, Weimin Liu, Pengfei Wang, Jian Xin Tang

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4 Citations (Scopus)


We constructed an effective electron extraction layer (EEL) used for polymer solar cells by integrating one new kind of organic material of 4,4′-(1,4-phenylene) bis(2-phenyl-6-p-tolylnicotinonitrile) (p-PPtNT) and cesium carbonate (Cs2CO3) used as a compound EEL (CEEL). The CEEL based device exhibits an ideal PCE of 4.15%, corresponding to an enhancement 220% in contrast to that of control device without EEL, which is also comparable to that of ZnO based device. Our analyses indicated that the remarkably improved PCE for CEEL based device is mainly ascribed to the Ohmic contact and the negligible electron extraction barrier at cathode/active layer by inserting CEEL.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalOptics Communications
Publication statusPublished - 1 Dec 2015
Externally publishedYes


  • Electron extraction layer
  • Interface layer
  • P-PPtNT
  • Polymer solar cells

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