A MoSe2quantum dot modified hole extraction layer enables binary organic solar cells with improved efficiency and stability

Hong Lian, Mingao Pan, Jinba Han, Xiaozhe Cheng, Jiaen Liang, Wenqiang Hua, Yongquan Qu, Yucheng Wu, Qingchen Dong, Bin Wei, He Yan, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

In this paper, we demonstrate a solution-processed MoSe2quantum dots/PEDOT:PSS bilayer hole extraction layer (HEL) for non-fullerene organic solar cells (OSCs). It is found that the introduction of MoSe2QDs can alter the work function and phase separation of PEDOT:PSS, thus affecting the morphology of the active layer and improving the performance of OSCs. The MoSe2QDs/PEDOT:PSS bilayer HEL can improve the fill factor (FF), short-circuit current density (Jsc) and power conversion efficiency (PCE) of OSCs based on different active layers. The best PCE of up to 17.08% was achieved based on a recently reported active layer binary system named SZ2:N3, which is among the highest reported values to date for OSCs using 2D materials as an interface modifier. Our study indicates that this simple and solution-processed MoSe2QDs/PEDOT:PSS bilayer thin film could be a potential alternative HEL to the commonly used PEDOT:PSS conducting polymers.

Original languageEnglish
Pages (from-to)16500-16509
Number of pages10
JournalJournal of Materials Chemistry A
Volume9
Issue number30
DOIs
Publication statusPublished - 14 Aug 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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