聚合物添加剂工程制备高性能银栅格上柔性钙钛矿太阳能电池

doi:10.11896/cldb.24040251

材料导报

2025, Vol. 39

Issue (4): 24040251-5 https://doi.org/10.11896/cldb.24040251

无机非金属及其复合材料

聚合物添加剂工程制备高性能银栅格上柔性钙钛矿太阳能电池

李泽榕^1,2, 毛晨雨², 孙涛², 林煌^2,3, 王佳明², 陈步超², 汤世伟¹, 王维燕^2,3,*

1 宁波大学物理科学与技术学院,浙江宁波 315211
2 浙大宁波理工学院材料科学与工程学院,浙江宁波 315100
3 中国科学院宁波材料技术与工程研究所,浙江宁波 315201

Polymer Additive for High-performance Flexible Perovskite Solar Cells on Ag-mesh Transparent Electrodes

LI Zerong^1,2, MAO Chenyu², SUN Tao², LIN Huang^2,3, WANG Jiaming², CHEN Buchao², TANG Shiwei¹, WANG Weiyan^2,3,*

1 School of Physical Science and Technology, Ningbo University, Ningbo 315211, Zhejiang, China
2 School of Materials Science and Engineering, NingboTech University, Ningbo 315100, Zhejiang, China
3 Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China

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摘要基于银栅格透明电极的柔性钙钛矿太阳能电池是一种极具前景的便携式和可穿戴电子设备的理想电源。然而,卤素离子和金属离子之间的相互扩散会影响器件的效率和稳定性,对制备高性能柔性器件提出了挑战。本研究采用聚氨酯(PU)聚合物添加剂钝化钙钛矿薄膜晶界,结合界面阻隔层的策略制备柔性钙钛矿电池。Pb²⁺与C=O之间的强相互作用改善了钙钛矿薄膜的结晶特性,降低了薄膜的缺陷态密度。因此,基于银栅格电极的柔性钙钛矿电池光电转换效率(PCE)提高到20.21%,是迄今为止非ITO柔性电极上钙钛矿电池最高效率之一。由于聚氨酯填充晶界和界面阻隔层的双重作用阻碍了卤素和金属的相互扩散,柔性钙钛矿电池还表现出较高的湿度稳定性和运行稳定性。器件在30%的相对湿度下暴露150 h后仍能保持92.1%的初始PCE值,在最大功率点下工作1 000 h后仍能保持95%的初始PCE值。最后,柔性钙钛矿电池显示出良好的机械稳定性,在4 mm的曲率半径下弯曲1 000次后,还保持了86%的初始PCE。此研究可为高性能柔性钙钛矿光电器件的设计提供思路和实验指导。

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	李泽榕
	毛晨雨
	孙涛
	林煌
	王佳明
	陈步超
	汤世伟
	王维燕

关键词: 柔性钙钛矿太阳能电池银栅格透明电极聚氨酯晶界

Abstract: Flexible perovskite solar cells (PSCs) based on Ag-mesh transparent electrodes have been developed as promising power sources for portable and wearable electronic devices. However, the undesired interdiffusion of halogen and metal ions poses a challenge to the efficiency and stability of the devices. This study focuses on the preparation of flexible PSCs utilizing the combined effects of polyurethane (PU) polymer additive for grain boundary passivation and an interfacial protective layer. One advantage of the strong interaction between Pb²⁺ and the C=O species is that it improved the crystal structure of the perovskite films, resulting in films of reduced defect density. As a result, the Ag-mesh electrode’s flexible PSC demonstrated an enhanced power conversion efficiency (PCE) of 20.21%, ranking among the greatest PSC efficiencies on non-ITO electrodes to date. Moreover, the flexible PSCs demonstrated improved moisture and operational stability due to the presence of PU additive at the grain boundary and the interlayer barrier. This hindered the interdiffusion of halogen and metal. As a result, the PSCs were able to maintain 92.1% of their starting PCE value after being exposed to 30% relative humidity for 150 h, and 95% of their initial PCE when operating at the maximum power point for 1 000 h. Finally, after 1 000 cycles of bending with a 4 mm radius, the PSCs showed good mechanical stability, while also maintaining 86% of their initial PCE. This work can shed light on a new perspective for designing high-performance flexible perovskite-based optoelectronic devices.

Key words: flexible perovskite solar cell Ag-mesh transparent electrode polyurethane grain boundary

出版日期: 2025-02-25 发布日期: 2025-02-18

ZTFLH:

TM914.4

基金资助: 宁波市重点研发项目(2023Z151);宁波市科技创新项目(2022-DST-004)

通讯作者: *王维燕,浙大宁波理工学院研究员、硕士研究生导师。2009年毕业于浙江大学硅材料国家重点实验室获工学博士学位。长期从事高效低成本太阳能电池关键材料与技术研究、涵盖晶硅太阳能电池硅材料缺陷及杂质研究和低成本金属化技术研究、钙钛矿太阳能电池的柔性化及半透明化研究。wangwy@nbt.edu.cn

作者简介: 李泽榕,宁波大学物理科学与技术学院硕士研究生,在王维燕研究员的指导下进行研究。目前主要研究领域为钙钛矿太阳能电池。

引用本文:

李泽榕, 毛晨雨, 孙涛, 林煌, 王佳明, 陈步超, 汤世伟, 王维燕. 聚合物添加剂工程制备高性能银栅格上柔性钙钛矿太阳能电池[J]. 材料导报, 2025, 39(4): 24040251-5.
LI Zerong, MAO Chenyu, SUN Tao, LIN Huang, WANG Jiaming, CHEN Buchao, TANG Shiwei, WANG Weiyan. Polymer Additive for High-performance Flexible Perovskite Solar Cells on Ag-mesh Transparent Electrodes. Materials Reports, 2025, 39(4): 24040251-5.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.24040251 或 https://www.mater-rep.com/CN/Y2025/V39/I4/24040251

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