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Related Experiment Video

Updated: Jan 30, 2026

Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization
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Morphological and Optical Engineering for High-Performance Polymer Solar Cells.

Seo-Jin Ko1, Jungwoo Heo2, Byoung Hoon Lee3

  • 1Division of Advanced Materials , Korea Research Institute of Chemical Technology (KRICT) , Daejeon 34114 , Republic of Korea.

ACS Applied Materials & Interfaces
|January 25, 2019
PubMed
Summary

We optimized polymer solar cells using processing additives like diphenyl ether (DPE) and ZnO optical spacers. This improved surface morphology and light absorption, achieving a high power conversion efficiency of 10.81%.

Keywords:
bulk heterojunctionmorphology engineeringoptical engineeringpolymer solar cellsprocessing additive

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Organic Electronics

Background:

  • Polymer solar cells (PSCs) offer a promising renewable energy source.
  • Morphological and optical properties significantly impact PSC performance.
  • Controlling nanoscale morphology and light management is crucial for efficiency.

Purpose of the Study:

  • To enhance polymer solar cell efficiency through morphological and optical engineering.
  • To investigate the effects of processing additives and optical spacers on PSC performance.
  • To optimize active layer morphology and light absorption for improved charge collection.

Main Methods:

  • Incorporation of diphenyl ether (DPE) as a processing additive in the active layer.
  • Addition of zinc oxide (ZnO) as optical spacers on the active layer.
  • Fabrication and characterization of polymer solar cell devices.

Main Results:

  • Diphenyl ether (DPE) resulted in smoother surface roughness and uniform donor/acceptor domains.
  • Devices with DPE achieved a power conversion efficiency of 10.22% due to better charge collection and reduced recombination.
  • ZnO optical spacers improved electric field distribution and enhanced light absorption, leading to a peak efficiency of 10.81%.

Conclusions:

  • Morphological and optical engineering are effective strategies for boosting PSC performance.
  • DPE as a processing additive significantly enhances active layer morphology and device efficiency.
  • ZnO optical spacers further improve light management and overall device efficiency in PSCs.