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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
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Optimizing solar performance of CFTSe-based solar cells using MoSe2 as an innovative buffer layers.

Mohamed Moustafa1, Ziad Abu Waar2, Shadi Yasin3

  • 1Department of Physics, School of Sciences and Engineering, The American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt. mohamed.orabi@aucegypt.edu.

Scientific Reports
|January 3, 2025
PubMed
Summary

This study introduces a high-efficiency solar cell using Copper-Iron-Tin-Selenide (CFTSe) with a novel Molybdenum Diselenide (MoSe2) buffer layer. Optimized parameters achieved a 26.47% power conversion efficiency, showing promise for sustainable solar technology.

Keywords:
Buffer layerCFTSeMoSe2SCAPS simulationTMDCsThin film solar cell

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In Situ Monitoring of the Accelerated Performance Degradation of Solar Cells and Modules: A Case Study for CuIn,GaSe2 Solar Cells

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Semiconductor Physics

Background:

  • The development of efficient and sustainable solar energy technologies is crucial for addressing global energy demands.
  • Conventional solar cells often rely on toxic or scarce materials, necessitating research into alternatives.
  • Copper-Iron-Tin-Selenide (CFTSe) is an earth-abundant, non-toxic semiconductor with potential for photovoltaic applications.

Purpose of the Study:

  • To investigate the photovoltaic performance of a novel heterostructure based on the quaternary semiconductor Cu2FeSnSe4 (CFTSe).
  • To optimize electrical parameters including acceptor carrier concentration and absorber thickness for maximum power conversion efficiency (PCE).
  • To evaluate the impact of defect levels and operating temperature on cell performance and explore MoSe2 as a sustainable buffer layer alternative.

Main Methods:

  • Utilizing the SCAPS (Solar Cell Quantum Efficiency Simulation) simulator to model and analyze photovoltaic device performance.
  • Systematic exploration of various electrical specifications: short circuit current (Jsc), open circuit voltage (Voc), fill factor (FF), and PCE.
  • Assessing the influence of defect densities in CFTSe and MoSe2 layers and varying operating temperatures (300-500 K).

Main Results:

  • Optimized parameters for the CFTSe heterostructure achieved a remarkable PCE of 26.47%.
  • Key performance metrics at optimal conditions include Voc of 1.194 V, Jsc of 35.37 mA/cm², and FF of 62.65% with a 0.5 μm CFTSe absorber.
  • Deep defect levels above 1×10¹⁷ cm⁻³ significantly reduced Jsc, and increasing temperature (300-500 K) notably decreased Voc.

Conclusions:

  • The proposed CFTSe-based solar cell structure with a MoSe2 buffer layer demonstrates high efficiency and potential for sustainable solar technology.
  • MoSe2 serves as a viable and eco-friendly alternative to conventional buffer layers like CdS.
  • Further research into defect mitigation and thermal management can further enhance the performance of CFTSe solar cells.