18.62%‐Efficiency Binary Organic Solar Cells with a PEDOT1:PSS2.80 Buffer Layer

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	18.62%‐Efficiency Binary Organic Solar Cells with a PEDOT1:PSS2.80 Buffer Layer
	Jixi Zeng 1; Xi Fan 1; Jinzhao Wang 2; Jia Li 1; Jiwen Chen 1; HUI KWUN NAM2 ; Ling Ai 1; Junfeng Fang 3; Weijie Song 1
	2024-02
Source Publication	Advanced Optical Materials
Volume	12 Issue:15 Pages:2302947
Abstract	Binary organic solar cells (OSCs) having a controllable phase-separated morphology of active layers and simple solution manufacturing are desirable for organic photovoltaic adaptation. However, low hole mobility and an unbalanced hole- and electron transport reduce the power conversion efficiency (PCE) of the OSCs. Here, a highly efficient binary OSC with a poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) buffer layer as a hole transport layer (HTL) via using a water-soluble sulfonate to wrap the PEDOT:PSS core-shell structures in solutions is reported. The PEDOT1:PSS2.80 buffer layers have good merits including i) a smooth, homogeneous, and hydrophilic surface for an intimate contact, ii) a high work function and raised surface potentials with much uniform distributions for an energy band alignment, and iii) a high optical transmittance in the broad spectral region from 400 to 1100 nm along with an improved electrical conductivity. Benefiting from a raised hole mobility and a better charge-mobility balance, the solution-processed binary OSCs yielded a high PCE of 18.62%. 18.62% is one of the highest values among these binary OSCs based on the PEDOT:PSS HTLs and PM6:L8-BO active layers. The PEDOT1:PSS2.80 buffer layers are superior to the pristine PEDOT1:PSS2.60 buffer layers in terms of raising the OSC efficiency.
Document Type	Journal article
Collection	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author	Xi Fan; Weijie Song
Affiliation	1.Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 P. R. China 2.Department of Material Science and Engineering, Hubei University, Wuhan, 430062 P. R. China 3.School of Physics and Electronics Science, Engineering Research Center of Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai, 200241 P. R. China
Recommended Citation GB/T 7714	Jixi Zeng,Xi Fan,Jinzhao Wang,et al. 18.62%‐Efficiency Binary Organic Solar Cells with a PEDOT1:PSS2.80 Buffer Layer[J]. Advanced Optical Materials, 2024, 12(15), 2302947.
APA	Jixi Zeng., Xi Fan., Jinzhao Wang., Jia Li., Jiwen Chen., HUI KWUN NAM., Ling Ai., Junfeng Fang., & Weijie Song (2024). 18.62%‐Efficiency Binary Organic Solar Cells with a PEDOT1:PSS2.80 Buffer Layer. Advanced Optical Materials, 12(15), 2302947.
MLA	Jixi Zeng,et al."18.62%‐Efficiency Binary Organic Solar Cells with a PEDOT1:PSS2.80 Buffer Layer".Advanced Optical Materials 12.15(2024):2302947.

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