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Related Experiment Video

Updated: Dec 29, 2025

Planar and Three-Dimensional Printing of Conductive Inks
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High-Brightness Perovskite Light-Emitting Diodes Using a Printable Silver Microflake Contact.

Masoud Payandeh1, Vahid Ahmadi1, Farzaneh Arabpour Roghabadi1,2

  • 1Faculty of Electrical and Computer Engineering, Tarbiat Modares University, 14115-111 Tehran, Iran.

ACS Applied Materials & Interfaces
|February 1, 2020
PubMed
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Efficient Perovskite/Silicon Tandem Solar Cells Using Hybrid Two-Step Inkjet Printing with Edge Isolation Precision.

Small science·2025

This study introduces a novel silver microflake (SMF) electrode for perovskite light-emitting diodes (PeLEDs), overcoming fabrication challenges like pinholes and improving device stability and efficiency for brighter, more durable displays.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Device Fabrication

Background:

  • Solution-processed perovskite light-emitting diodes (PeLEDs) face challenges in achieving high efficiency and fabrication yield.
  • Pinholes in perovskite layers and unstable organic interlayers hinder device performance and longevity.

Purpose of the Study:

  • To develop a novel fabrication method for high-brightness PeLEDs.
  • To address limitations of organic interlayers by introducing a stable inorganic electron-transporting layer.
  • To enhance device performance and enable scalable, low-cost manufacturing.

Main Methods:

  • Fabrication of a p-i-n PeLED using a novel blade-coated silver microflake (SMF) rear electrode.
  • Integration of a nanocrystalline ZnO inorganic electron-transporting layer.
Keywords:
leakage currentlight-emitting diodesnanocrystalline ZnOperovskite materialssilver microflakes

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  • Characterization of device performance, including luminance, current efficiency, and external quantum efficiency.

    • Main Results:

    • The novel SMF rear electrode prevents electrical shorting, enabling the use of an inorganic electron-transporting layer.
    • Achieved a maximum luminance of 98,000 cd/m2 and a current efficiency of 22.3 cd/A.
    • Demonstrated a high external quantum efficiency of 4.6% at a forward bias of 5.9 V.

    Conclusions:

    • The SMF rear electrode is crucial for high-performance PeLEDs, offering improved stability and efficiency.
    • The developed technology allows for low-cost, scalable, and printable manufacturing of PeLEDs.
    • This approach is suitable for flexible device applications, paving the way for advanced display technologies.