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Related Concept Videos

P-N junction01:11

P-N junction

1.7K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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Related Experiment Video

Updated: May 6, 2026

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Breaking the Efficiency-Transparency Compromise in Semitransparent Solar Cells by Optimizing the Perovskite/C60

Chongan Chen1, Zaheen Uddin1, Yiran Lu1

  • 1College of Materials Science and Engineering, Hunan University, Changsha 410082, Hunan, China.

ACS Applied Materials & Interfaces
|August 22, 2025
PubMed
Summary

Surface molecular engineering using tyramine hydrochloride (TACl) significantly reduces defects in semitransparent perovskite solar cells (ST-PSCs). This enhances efficiency and stability, paving the way for advanced photovoltaic applications.

Keywords:
light utilization efficiencyopen-circuit voltagesemitransparent perovskite solar cellstyramine hydrochloridewide-bandgap perovskite

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Semitransparent perovskite solar cells (ST-PSCs) are crucial for tandem applications and building-integrated photovoltaics.
  • Significant open-circuit voltage (V_OC) loss due to interfacial nonradiative recombination hinders ST-PSC development.

Purpose of the Study:

  • To address V_OC loss in ST-PSCs by employing surface molecular engineering.
  • To passivate interfacial defects and optimize energy-level alignment at the perovskite/C60 interface.

Main Methods:

  • Utilized tyramine hydrochloride (TACl) for surface molecular engineering at the perovskite/C60 interface.
  • Investigated the role of organic ammonium and chloride ions in defect passivation and halide vacancy compensation.
  • Fabricated and characterized TACl-modified ST-PSCs.

Main Results:

  • TACl treatment passivated Pb-related defects and compensated halide vacancies, suppressing nonradiative recombination.
  • Achieved a wide-bandgap perovskite film with enhanced crystallinity and reduced defect density.
  • Developed a semitransparent device with 14.66% power conversion efficiency (PCE) and 13.2% average visible light transmittance.
  • Demonstrated significantly improved operational stability, retaining 82% of initial PCE after 720 hours in air.

Conclusions:

  • Surface molecular engineering with TACl is a viable strategy for high-performance ST-PSCs.
  • The method effectively reduces interfacial defects and enhances energy-level alignment.
  • TACl-modified ST-PSCs exhibit superior efficiency and stability compared to control devices.