Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 9, Issue 30, Pages 16500-16509Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta04030h
Keywords
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Funding
- National Natural Science Foundation of China [61774109]
- Youth Sanjin Scholar Program
- Key R&D Project of Shanxi Province (International cooperation program) [201603D421032]
- Natural Science Foundation of Shanxi Province [201801D211007]
- RGC Senior Research Fellowship Scheme [SRFS2021-5S01]
- Hong Kong Research Grants Council [C5037-18G]
- Hong Kong Polytechnic University [1-ZE1C]
- Research Institute for Smart Energy [CDA2]
- Endowed Professorship in Energy [847S]
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This study demonstrates that the MoSe2 quantum dots/PEDOT:PSS bilayer hole extraction layer can effectively enhance the performance of non-fullerene organic solar cells in terms of fill factor, short-circuit current density, and power conversion efficiency. The highest PCE of 17.08% was achieved with the active layer SZ2:N3, indicating potential application prospects.
In this paper, we demonstrate a solution-processed MoSe2 quantum dots/PEDOT:PSS bilayer hole extraction layer (HEL) for non-fullerene organic solar cells (OSCs). It is found that the introduction of MoSe2 QDs 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 MoSe2 QDs/PEDOT:PSS bilayer HEL can improve the fill factor (FF), short-circuit current density (J(sc)) 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 MoSe2 QDs/PEDOT:PSS bilayer thin film could be a potential alternative HEL to the commonly used PEDOT:PSS conducting polymers.
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