研究目的
Investigating the efficiency of ternary polymer solar cells using two non-fullerene acceptors with different DPP cores and terminal units.
研究成果
The ternary polymer solar cell with an optimized active layer composition of PBDB-T:MPU2:MPU3 (1:1:1) achieved a higher power conversion efficiency (10.78%) than the binary counterparts, attributed to enhanced JSC and FF values. The complementary absorptions and energy transfer between MPU2 and MPU3 contributed to the improved performance.
研究不足
The study is limited to the specific materials used (PBDB-T, MPU2, and MPU3) and their combinations in binary and ternary configurations. The performance of the solar cells may vary with different materials or fabrication conditions.
1：Experimental Design and Method Selection:
The study involved the fabrication of binary and ternary polymer solar cells using PBDB-T as the donor and MPU2 and MPU3 as acceptors. The devices were characterized under simulated AM 1.5 G irradiation.
2：5 G irradiation. Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The active layers were optimized by varying the donor-to-acceptor weight ratio in both binary and ternary active layers.
3：List of Experimental Equipment and Materials:
The fabrication process involved the use of indium tin oxide (ITO) coated glass substrates, PEDOT:PSS and PFN as the hole transport and electron transport layers, respectively, and aluminum (Al) as the top electrode.
4：Experimental Procedures and Operational Workflow:
The ITO substrates were cleaned and the active layer was spin-coated with the addition of DIO as a solvent additive. The devices were then thermally annealed and characterized.
5：Data Analysis Methods:
The current-voltage characteristics were measured under illumination, and the incident photon-to-current conversion efficiencies (IPCE) were recorded.
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获取完整内容-
PBDB-T
Polymer donor in the active layer of the solar cells
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MPU2
Non-fullerene acceptor in the active layer of the solar cells
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MPU3
Non-fullerene acceptor in the active layer of the solar cells
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PEDOT:PSS
Hole transport layer in the solar cells
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PFN
Electron transport layer in the solar cells
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Aluminum (Al)
Top electrode in the solar cells
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DIO
Solvent additive in the fabrication of the active layer
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Chloroform
Host solvent in the fabrication of the active layer
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