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Related Experiment Video

Updated: Jul 9, 2026

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

Polymer-fullerene composite solar cells.

Barry C Thompson1, Jean M J Fréchet

  • 1Department of Chemistry, University of California, Berkeley, USA.

Angewandte Chemie (International Ed. in English)
|November 29, 2007
PubMed
Summary

Organic photovoltaic systems offer a promising, cost-effective alternative to fossil fuels. Further research into bulk heterojunctions is needed to improve solar cell efficiency beyond 5%.

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Polymer-based organic photovoltaic (OPV) systems are emerging as a cost-effective and lightweight solar energy conversion technology.
  • These excitonic solar cells rely on photoinduced electron transfer between donor and acceptor materials.
  • Fullerenes are widely used as acceptors due to their favorable electron affinity and charge transport properties.

Purpose of the Study:

  • To investigate the fundamental understanding of the interplay between active layer morphology and electronic properties in polymer-fullerene composites.
  • To identify pathways for improving the efficiency of organic photovoltaic devices.

Main Methods:

  • Fabrication and characterization of bulk heterojunction (BHJ) organic photovoltaic devices.
  • Analysis of the morphology and electronic properties of the polymer-fullerene active layer.

Main Results:

  • The most effective organic solar cells currently achieve efficiencies around 5%.
  • Bicontinuous polymer-fullerene composites (BHJs) represent the most successful active layer morphology to date.

Conclusions:

  • Significant advancements in understanding the complex relationship between morphology and electronic properties are crucial for the viable application of OPV technology.
  • Further research is required to overcome current efficiency limitations and realize the full potential of polymer-based solar cells.

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