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Updated: Apr 22, 2026

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
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High-Efficiency Nano-Interdigitated Heterojunction Photovoltaics Through Aggregation-Controlled Film Formation and

Qizhi Jiang1, Ben Fan1, Yihui Wu1

  • 1School of Chemical Engineering and State Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|April 21, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a novel interface and optical co-engineering strategy for high-efficiency photovoltaic devices. The approach combines D18 incorporation and nanoimprint lithography (NIL) to create durable and stable p/n heterojunction solar cells.

Keywords:
aggregation‐controlled morphologyfilm‐formation kineticsinterdigitated heterojunctionnanoimprint lithographyp/n heterojunction photovoltaics

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Nanotechnology

Background:

  • Optimizing interfacial contact and light management are crucial for advancing p/n heterojunction photovoltaic devices.
  • Current devices face challenges in efficiency and long-term stability.

Purpose of the Study:

  • To develop a co-engineering strategy for interface and optics to enhance p/n heterojunction photovoltaic devices.
  • To achieve high efficiency and durability in these devices through controlled material incorporation and fabrication techniques.

Main Methods:

  • Controlled incorporation of D18 into the n-type PY-IT layer to modify film formation and passivate defects.
  • Utilizing nanoimprint lithography (NIL) to create a vertically interdigitated p/n architecture.
  • Fabrication and characterization of planar and interdigitated p/n heterojunction devices.

Main Results:

  • Achieved a power conversion efficiency (PCE) of 25.23% for planar devices.
  • Developed vertically interdigitated devices with a champion PCE of 26.24% (0.09 cm²) and 25.03% (0.5 cm²).
  • Demonstrated exceptional operational stability, retaining ~90% efficiency after 1000 hours of continuous illumination without encapsulation.

Conclusions:

  • The interface and optical co-engineering strategy using D18 and NIL is effective for high-efficiency and durable p/n heterojunction photovoltaics.
  • This approach offers a scalable route toward developing next-generation solar cell technologies.
  • The developed devices exhibit promising performance and stability for practical applications.