Authors: Xinwei Wang, Seán R. Kavanagh, David O. Scanlon, Aron Walsh
Published on: February 06, 2024
Impact Score: 8.07
Arxiv code: Arxiv:2402.04434
Summary
- What is new: The paper provides a new understanding of the efficiency limits of Antimony selenide (Sb2Se3) solar cells, contradicting the belief that their low conversion efficiency is an intrinsic limitation.
- Why this is important: Sb2Se3 solar cells have been stuck at a conversion efficiency of around 10%, questioning whether this is their maximum achievable efficiency.
- What the research proposes: Using first-principles defect analysis, the study identifies how to minimize charged vacancies, particularly Se vacancies, through extrinsic oxygen passivation, to enhance conversion efficiency.
- Results: It’s predicted that Sb2Se3 solar cells can achieve an upper efficiency limit of 25% under optimal conditions, significantly higher than the current plateau.
Technical Details
Technological frameworks used: First-principles defect analysis
Models used: Hole and electron capture rates for point defects
Data used: nan
Potential Impact
Solar energy markets, particularly companies producing or investing in photovoltaic technologies, could benefit or need to adjust to these insights.
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