Journal
ORGANIC ELECTRONICS
Volume 99, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2021.106305
Keywords
Organic solar cells; Hole transport layer; WS(2 )nanosheets
Funding
- Natural Science Foundation of China [51803063]
- Science and Technology Program of Guangzhou [2019050001]
- Guangdong Basic and Applied Basic Research Foundation [2019B151502060]
- Guangdong Natural Science Foundation [2018A030313257]
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In this study, WS2 nanosheets were doped into PEDOT:PSS as an efficient hole transport layer for organic solar cells, leading to improved performance. The PEDOT:PSS:WS2 NS anode interlayer showed higher work function, reduced roughness, and improved hole mobility, resulting in enhanced hole extraction and transportation, as well as improved fill factor and short-circuit current density in the devices. The power conversion efficiency (PCE) increased from 14.35% to 15.67% with WS2 NS doping based on PM6:Y6.
In this work, we developed WS2 nanosheets (WS2 NS) doped into PEDOT:PSS (PEDOT:PSS/WS2 NS) as an efficient hole transport layer (HTL) for organic solar cells (OSCs). WS2 NS is obtained by a simple and cost-effective liquid-phase exfoliation (LPE) method. The results show that the PEDOT:PSS:WS2 NS anode interlayer has higher work function, reduced roughness and improved hole mobility. The devices based on PEDOT:PSS:WS2 NS interlayer show enhanced extraction and transportation of holes and improved fill factor and short-circuit current density. Based on PM6:Y6, the power conversion efficiency (PCE) increased from 14.35% to 15.67% after WS2 NS doping.
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