Enhancing Flexible Perovskite Photovoltaic Cells and Modules Through Light-Trapping and Light-Shifting Strategies.

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Small Methods Pub Date : 2025-01-15 DOI:10.1002/smtd.202401954

Mingzhu He, Yin Gao, Huilin Tan, Haoyang Zhang, Zexing Zhuang, Shaohang Wu, Yanyan Gao, Cuiling Zhang, Liang Liu, Qinrong Luo, Li Qin, Peng Jia, Chong Liu, Ruud E I Schropp, Yaohua Mai

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引用次数: 0

Abstract

Flexible perovskite photovoltaic devices are typically constructed on flexible polyethylene naphthalate (PEN) substrates, which exhibit near-ultraviolet absorption and high visible-light reflection, leading to significant optical losses. To address this issue, a reusable optical-management sticker tailored for flexible substrates has been proposed in this work. The sticker incorporates a light-shifting material that converts near-ultraviolet light into visible light, enabling photoelectric conversion of near-ultraviolet light. Additionally, the sticker features a light-trapping microstructure that creates a refractive index gradient from PEN to air, thereby achieving a significant anti-reflection effect. As a result, the efficiency of a flexible perovskite solar cell reached 23.05% (certified 22.46%) under 1 sun AM1.5G illumination and 36.65% (certified 34.03%) under 1000 lux artificial light illumination. Furthermore, scaling this solution to large-area modules has yielded remarkable improvements, achieving a breakthrough certified efficiency of 20.48% (aperture area 21 cm²) in flexible perovskite photovoltaic modules.

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通过捕光和光移策略增强柔性钙钛矿光伏电池和组件。

柔性钙钛矿光伏器件通常构建在柔性聚萘二甲酸乙二醇酯（PEN）衬底上，其具有近紫外吸收和高可见光反射，导致显着的光学损失。为了解决这个问题，本研究提出了一种针对柔性基板量身定制的可重复使用的光学管理贴纸。该贴纸包含一种将近紫外光转换为可见光的移光材料，从而实现近紫外光的光电转换。此外，该贴纸具有光捕获微结构，可产生从PEN到空气的折射率梯度，从而实现显著的抗反射效果。结果表明，柔性钙钛矿太阳能电池在1次太阳照射下的效率达到23.05%（认证22.46%），在1000勒克斯人工照明下的效率达到36.65%（认证34.03%）。此外，将该解决方案扩展到大面积组件已经取得了显着的改进，在柔性钙钛矿光伏组件中实现了20.48%（孔径面积21平方厘米）的突破性认证效率。

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

Small Methods Materials Science-General Materials Science

CiteScore

17.40

自引率

1.60%

发文量

347

期刊介绍： Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques. With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community. The online ISSN for Small Methods is 2366-9608.