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Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
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Toward Fast Screening of Organic Solar Cell Blends.

Artem Levitsky1, Giovanni Maria Matrone2, Aditi Khirbat3

  • 1Department of Material Science and Engineering Technion-Israel Institute of Technology Haifa 3200003 Israel.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 11, 2020
PubMed
Summary

Researchers developed rapid screening methods for organic solar cells. These techniques quickly assess material combinations and processing effects on thin-film morphology, accelerating development of efficient solar energy technologies.

Keywords:
bulk heterojunctionsmorphologyorganic electronicsphotovoltaic devicesscreening

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Organic Electronics

Background:

  • The development of novel materials for organic solar cells (OSCs) necessitates efficient screening methods.
  • Understanding the impact of processing on active layer morphology is crucial for device performance and stability.

Purpose of the Study:

  • To establish methodologies for rapid screening of donor:acceptor combinations in OSCs.
  • To elucidate how processing conditions influence the microstructure of OSC active layers.
  • To accelerate the development and large-area production of OSC technology.

Main Methods:

  • Utilized thermal analysis for rapid screening of material blends.
  • Employed vapor-phase-infiltration imaging to analyze thin-film morphology.
  • Applied transient-absorption spectroscopy to study processing effects.
  • Investigated poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3'''-di(2-octyldodecyl)-2,2';5',2'';5'',2'''-quaterthiophen-5,5'''-diyl)] (PCE11):phenyl-C61-butyric acid-methyl-ester (PCBM) systems.

Main Results:

  • Demonstrated rapid screening of various blend compositions and processing techniques.
  • Identified promising donor:acceptor combinations for OSC applications.
  • Revealed reliability issues in thin-film formation and reproducibility.
  • Gained insights into structure formation influenced by processing aids like nucleating agents.

Conclusions:

  • The developed methods enable fast evaluation of material combinations and processing strategies for OSCs.
  • These techniques accelerate the identification of high-performance materials and optimize processing conditions.
  • The study contributes to the advancement of organic solar cell technology towards commercial viability.