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Related Experiment Video

Updated: Jun 10, 2025

Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
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Morphology Optimization by Non-Halogenated and Twisted Volatile Solid Additive for High-Efficiency Organic Solar

Linze Wu1, Maojin Yun1, Jianqiang Qin2,3

  • 1College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao, 266071, China.

Small (Weinheim an Der Bergstrasse, Germany)
|October 21, 2024
PubMed
Summary
This summary is machine-generated.

A novel twisted additive, 1,4-diphenoxybenzene (DPB), enhances organic solar cell (OSC) performance by optimizing active layer morphology. This leads to a record power conversion efficiency (PCE) of 19.04% for the D18-Cl:N3 system.

Keywords:
molecular structuremorphology controlorganic solar cellsvolatile solid additive

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photovoltaics

Background:

  • Solid additives are crucial for improving organic solar cell (OSC) efficiency, reproducibility, and stability.
  • Existing solid additives have limited structural diversity and require further mechanistic investigation.

Purpose of the Study:

  • To introduce and investigate a novel non-halogenated, twisted solid additive, 1,4-diphenoxybenzene (DPB), for optimizing OSC active layer morphology.
  • To elucidate the working mechanism of DPB in enhancing OSC performance.

Main Methods:

  • Theoretical calculations, in situ/ex situ spectroscopy, grazing-incidence wide-angle X-ray scattering (GIWAXS), grazing-incidence small-angle X-ray scattering (GISAXS), and ultrafast spectroscopy.
  • Systematic investigation of DPB properties, active layer morphology, and carrier dynamics.

Main Results:

  • DPB selectively interacts with the Y6 acceptor, promoting optimized active layer morphology.
  • Achieved increased molecular crystallinity, tighter molecular packing, and favorable phase separation.
  • Resulted in a record power conversion efficiency (PCE) of 19.04% for the D18-Cl:N3 system.

Conclusions:

  • The non-halogenated, twisted DPB additive significantly enhances OSC performance.
  • DPB offers a promising strategy for developing highly efficient organic solar cells.
  • Provides theoretical and experimental insights for future high-performance solid additive development.