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Updated: Jun 17, 2026

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19.36 % Efficiency in Binary Organic Solar Cells with Amine-Hydroxy-Substituted Perylene Diimide-Based Interface

Xuanyan Luo1, Chengcheng Xie1, Xiaofeng Qin1

  • 1Engineering Research Center for Energy Conversion and Storage Technology of Guizhou, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025, P. R. China.

Chemsuschem
|March 18, 2025
PubMed
Summary

A new interfacial material, hydroxyethylamine-functionalized perylene diimide (PDIN-OH), enhances organic solar cell (OSC) performance. This material improves cathode work function and charge mobility, leading to higher power conversion efficiencies and stability.

Keywords:
Cathode interfacial materialsEfficienciesHigh-polarity functionalOrganic solar cells

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Area of Science:

  • Materials Science
  • Energy Science
  • Organic Electronics

Background:

  • Organic solar cells (OSCs) are a promising renewable energy technology.
  • Cathode interfacial materials (CIMs) are crucial for efficient charge extraction and device performance.
  • High-polarity functional groups in CIMs improve interfacial contact and reduce power loss.

Purpose of the Study:

  • To develop a novel CIM for enhanced OSC performance.
  • To investigate the effect of a hydrogen-bonding interfacial material on cathode work function and charge mobility.
  • To evaluate the efficiency and stability of OSCs incorporating the new CIM.

Main Methods:

  • Synthesis of hydroxyethylamine-functionalized perylene diimide (PDIN-OH).
  • Fabrication of OSC devices using PDIN-OH as the CIM.
  • Characterization of device performance, including power conversion efficiency (PCE) and stability.
  • Analysis of interfacial properties and charge carrier dynamics.

Main Results:

  • PDIN-OH effectively reduced cathode work function and improved interfacial contact.
  • OSCs with PDIN-OH achieved high PCEs of 17.51% (PM6:Y6) and 19.36% (D18:L8-BO).
  • The material demonstrated excellent conductivity and tolerance to thick active layers, enhancing device stability.

Conclusions:

  • PDIN-OH is a highly effective CIM for improving OSC performance and stability.
  • The hydrogen-bonding nature and doping interaction of PDIN-OH contribute to its superior performance.
  • This work presents a promising strategy for developing advanced CIMs for practical OSC applications.