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Related Concept Videos

P-N junction01:11

P-N junction

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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...
1.1K

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Updated: Jan 11, 2026

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Enhancing CaV0.5Fe0.5O3-Based Lead-Free Perovskite Solar Cell Efficiency by over 23% via Transport Layer Engineering.

Syed Abdul Moiz1, Muhammad I Masud2

  • 1Device Simulation Laboratory, Department of Electrical Engineering, College of Engineering and Architecture, Umm Al-Qura University, Makkah 21955, Saudi Arabia.

Nanomaterials (Basel, Switzerland)
|November 12, 2025
PubMed
Summary

Researchers explored CaV0.5Fe0.5O3 (CVFO) as a lead-free solar cell alternative, achieving 23.28% power conversion efficiency. This stable, high-performance material offers a promising solution for next-generation solar technology.

Keywords:
CVFOCaV0.5Fe0.5O3PCBMPEDOT:PSSTiO2lead-freeperovskite solar cellsimulationsolar celltransport layer

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Solid-State Physics

Background:

  • Perovskite solar cells show promise but face challenges like lead toxicity and instability.
  • Developing lead-free alternatives is crucial for sustainable solar energy.
  • CaV0.5Fe0.5O3 (CVFO) is investigated as a potential lead-free absorber material.

Purpose of the Study:

  • To evaluate CaV0.5Fe0.5O3 (CVFO) as a stable and efficient lead-free alternative to perovskite solar cells.
  • To optimize device architecture and understand performance-limiting factors.
  • To assess the thermal stability of CVFO-based solar cells.

Main Methods:

  • Device simulation and modeling were employed to analyze CVFO solar cells.
  • Optimization of electron transport layer (ETL: TiO2) and hole transport layer (HTL: Cu2O) parameters.
  • Investigation of interface defect impacts and thermal stability up to 350 K.

Main Results:

  • A record power conversion efficiency (PCE) of 23.28% was achieved with a 550 nm CVFO absorber.
  • Optimized ETL (TiO2, 40 nm, 10^20 cm^-3 doping) and HTL (Cu2O, 50 nm, 10^20 cm^-3 doping) were determined.
  • ETL/perovskite interface defects significantly reduce performance compared to HTL defects.
  • CVFO devices demonstrated stable operation up to 350 K.

Conclusions:

  • CaV0.5Fe0.5O3 is a viable, high-performance lead-free alternative for solar cells.
  • Optimized device design and defect mitigation are key for maximizing efficiency.
  • CVFO exhibits promising thermal stability for practical applications.