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Related Experiment Video

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A direct arylation-derived DPP-based small molecule for solution-processed organic solar cells.

Shi-Yong Liu1, Wei-Fei Fu, Jing-Qi Xu

  • 1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China. Department of Pharmacy and Chemistry, Taizhou University, Taizhou 317000,People's Republic of China.

Nanotechnology
|December 17, 2013
PubMed
Summary
This summary is machine-generated.

A novel diketo-pyrrolo-pyrrole (DPP) oligomer was synthesized using direct arylation of C-H bonds (DACH). This material achieved a 3.76% power conversion efficiency in organic solar cells, demonstrating DACH

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photovoltaics

Background:

  • Diketo-pyrrolo-pyrrole (DPP) based materials are promising for organic electronics.
  • Developing efficient synthesis methods for π-conjugated oligomers is crucial for advancing organic solar cells.

Purpose of the Study:

  • To synthesize a novel DPP oligomer with three DPP cores (Ph4Th4(DPP)3) using direct arylation of C-H bonds (DACH).
  • To evaluate the performance of this oligomer in solution-processed bulk heterojunction organic solar cells.

Main Methods:

  • Synthesis of Ph4Th4(DPP)3 via direct arylation of C-H bonds (DACH).
  • Fabrication of organic solar cells using blends of Ph4Th4(DPP)3 as the electron donor and fullerene derivatives as the electron acceptor.
  • Optimization of device performance through morphological tuning via blend ratio and additives.

Main Results:

  • Ph4Th4(DPP)3 exhibits good solubility and broad absorption from visible to near-infrared light.
  • The synthesized oligomer achieved a high field-effect hole mobility of 0.006 cm(2) V(-1) s(-1).
  • Optimized organic solar cells demonstrated a power conversion efficiency of 3.76% and an open-circuit voltage of 0.85 V.

Conclusions:

  • Direct arylation of C-H bonds (DACH) is an effective method for synthesizing π-conjugated oligomers for organic solar cells.
  • The developed DPP oligomer shows potential for efficient organic photovoltaic applications.
  • Morphological control is key to optimizing the performance of bulk heterojunction organic solar cells.