Theoretical Analysis of Perovskite/Ultrathin Silicon Tandem Solar Cells with Ag Nanocone Plasmonics

IF 4.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2025-04-28 DOI:10.1007/s11468-025-02975-9

Chengyao Hu, Chen Shi, Hongqiang Qian, Jing Zhang, Yan Hu, Panpan Zhou, Zhang Zhang, Yushen Liu, Yawei Kuang

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引用次数: 0

Abstract

Perovskite and ultrathin single-crystalline silicon can form flexible tandem solar cells, achieving enhanced utilization of solar spectrum through the combination of wide-bandgap perovskite and narrow-bandgap silicon materials. However, as the thickness of light-absorbing layers decreases, current mismatch induced by optical mismatch has become a critical bottleneck constraining the efficiency improvement of ultrathin tandem cells. This study systematically investigates the optical absorption enhancement mechanisms of Ag nanocone plasmonic structures in tandem solar cells through theoretical analysis and numerical simulations. The results demonstrate that for tandem cells with ultrathin absorber layers in both top and bottom subcells, positional optimization of plasmonic structures can significantly improve light absorption efficiency via synergistic effects of tip-field enhancement and light scattering. For dual-bandgap ultrathin tandem cells, the optical absorption spectrum is divided into three characteristic regions. Inverted placement of Ag nanocone arrays within the intermediate layer enables finer regulation of light absorption in both top and bottom subcells, thereby effectively addressing optical mismatch issues. This research provides a theoretical foundation and technical guidance for designing high-efficiency, low-cost, flexible, and lightweight perovskite/silicon tandem solar cells.

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具有银纳米锥等离子体的钙钛矿/超薄硅串联太阳能电池的理论分析

钙钛矿与超薄单晶硅可以形成柔性串联太阳能电池，通过宽禁带钙钛矿与窄禁带硅材料的结合，实现对太阳光谱的增强利用。然而，随着吸光层厚度的减小，由光失配引起的电流失配已成为制约超薄串联电池效率提高的关键瓶颈。本文通过理论分析和数值模拟，系统地研究了银纳米锥等离子体结构在串联太阳能电池中的光吸收增强机理。结果表明，对于顶部和底部都有超薄吸收层的串联电池，等离子体结构的位置优化可以通过尖端场增强和光散射的协同效应显著提高光吸收效率。对于双带隙超薄串联电池，光吸收光谱分为三个特征区。银纳米锥阵列在中间层内的反向放置可以更好地调节顶部和底部亚单元的光吸收，从而有效地解决光学失配问题。该研究为设计高效、低成本、柔性、轻量化的钙钛矿/硅串联太阳能电池提供了理论基础和技术指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.