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Related Experiment Video

Updated: Mar 10, 2026

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
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Morphology Evolution in High-Performance Polymer Solar Cells Processed from Nonhalogenated Solvent.

Wanzhu Cai1, Peng Liu1, Yaocheng Jin1

  • 1Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 17, 2016
PubMed
Summary

A novel non-halogenated solvent processing method enhances polymer solar cell efficiency. This approach yields improved nanomorphology and balanced charge transport, outperforming traditional halogenated solvents.

Keywords:
additiveshigh‐performance solar cellsmorphology evolutionnonhalogenated solventspolymer solar cells

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photovoltaics

Background:

  • Polymer solar cells (PSCs) are a promising renewable energy technology.
  • Current PSC fabrication often relies on halogenated solvents, raising environmental concerns.
  • Achieving high power conversion efficiencies (PCEs) requires optimized morphology and charge transport.

Purpose of the Study:

  • To develop and evaluate a new processing protocol for PSCs using non-halogenated solvents and additives.
  • To compare the performance of PSCs fabricated with the new protocol against those using conventional halogenated solvent systems.
  • To investigate the relationship between nanoscale morphology and device performance.

Main Methods:

  • Development of a processing protocol utilizing a non-halogenated solvent and additive system.
  • Fabrication of polymer solar cells using both the novel and conventional processing methods.
  • Morphological characterization using techniques to analyze nanoscale structure and polymer network formation.
  • Device performance testing to determine power conversion efficiencies and charge transport properties.

Main Results:

  • The new non-halogenated processing protocol resulted in PSCs with superior power conversion efficiencies compared to devices processed with halogenated solvents.
  • Morphological studies revealed a finely distributed nanomorphology with a well-defined polymer fibril network in the high-performing devices.
  • This optimized nanomorphology facilitated balanced charge transport, contributing to the enhanced device performance.

Conclusions:

  • A non-halogenated solvent-based processing protocol offers a viable and environmentally friendlier alternative for high-efficiency polymer solar cell fabrication.
  • The correlation between optimized nanomorphology, specifically a well-defined polymer fibril network, and balanced charge transport is crucial for achieving high PCEs.
  • This work paves the way for greener and more efficient organic photovoltaic devices.