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Related Experiment Video

Updated: Apr 9, 2026

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
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A Solution-Processable Molecule using Thieno[3,2-b]thiophene as Building Block for Efficient Organic Solar Cells.

Huan Wei1,2, Weichao Chen1, Liangliang Han1

  • 1CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.

Chemistry, an Asian Journal
|June 23, 2015
PubMed
Summary

A novel small molecule donor, DCATT, was synthesized for organic solar cells. This material achieved a 5.20% power conversion efficiency, demonstrating its potential for efficient energy conversion.

Keywords:
donor-acceptor systemsfused-ring systemsorganic electronicsorganic solar cellsthienothiophene

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photovoltaics

Background:

  • Organic solar cells (OSCs) offer a promising alternative to conventional photovoltaics due to their flexibility and low manufacturing costs.
  • Developing efficient donor materials is crucial for enhancing OSC performance.

Purpose of the Study:

  • To design and synthesize a novel small molecule donor material, DCATT, for solution-processed organic solar cells.
  • To investigate the structure-property relationships of DCATT for improved charge transport and photovoltaic performance.

Main Methods:

  • Synthesis of the acceptor-π-donor-π-acceptor (A-π-D-π-A) small molecule DCATT.
  • Fabrication of small-molecule organic solar cells using DCATT as the donor material blended with a fullerene acceptor.
  • Device characterization under standard illumination conditions (AM 1.5G, 100 mW cm⁻²).

Main Results:

  • The synthesized DCATT molecule features a fused thieno[3,2-b]thiophene π-bridge and benzodithiophene core, enhancing conjugation and π-π stacking.
  • Organic solar cells fabricated with DCATT and fullerene acceptors achieved a power conversion efficiency (PCE) of 5.20%.
  • The molecular design promotes favorable charge carrier transport properties.

Conclusions:

  • The designed DCATT small molecule is a viable donor material for high-performance organic solar cells.
  • The enhanced conjugation and π-π stacking contribute to efficient charge transport and device efficiency.
  • Solution-processed organic solar cells based on DCATT show significant potential for practical applications.