Investigation of Perovskite Solar Cells via a Multi-functional Columnar Cucurbituril Additive Strategy

Guo Yixuan; Tan Haiting; Wu Hualin

doi:10.12052/gdutxb.250041

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Investigation of Perovskite Solar Cells via a Multi-functional Columnar Cucurbituril Additive Strategy

更新时间：2026-05-27

- Investigation of Perovskite Solar Cells via a Multi-functional Columnar Cucurbituril Additive Strategy
- Vol. 42, Issue 4, Pages: 115-122(2025)
- 作者机构：
  
  广东工业大学材料与能源学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.250041
  CLC： TM914.4
- Published：2025
- 稿件说明：
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郭弋瑄, 谭海婷, 吴华林. 基于多功能柱状葫芦脲添加剂策略的钙钛矿太阳能电池研究[J]. 广东工业大学学报, 2025, 42(4): 115–122.

Guo Yixuan, Tan Haiting, Wu Hualin. Investigation of Perovskite Solar Cells via a Multi-functional Columnar Cucurbituril Additive Strategy[J]. 2025, 42(4): 115-122.
郭弋瑄, 谭海婷, 吴华林. 基于多功能柱状葫芦脲添加剂策略的钙钛矿太阳能电池研究[J]. 广东工业大学学报, 2025, 42(4): 115–122. DOI： 10.12052/gdutxb.250041

Guo Yixuan, Tan Haiting, Wu Hualin. Investigation of Perovskite Solar Cells via a Multi-functional Columnar Cucurbituril Additive Strategy[J]. 2025, 42(4): 115-122. DOI： 10.12052/gdutxb.250041.

摘要

有机−无机杂化钙钛矿太阳能电池因其效率快速突破超过晶硅电池且其低廉的制备成本优势，而被誉为光伏领域新希望。然而，溶液法制备的多晶薄膜因其结晶质量和高缺陷态问题严重制约器件性能与长期稳定性。本文创新性地引入具有柱状结构的葫芦脲(6环) (Cucurbit[6

]

uril

CB[6

]

) 作为钙钛矿前驱体添加剂，以调控钙钛矿结晶质量、钝化内部缺陷，从而提升器件效率及稳定性。CB[6

]

的引入能够促进晶粒的均匀生长，获得更大尺寸、更少晶界的钙钛矿晶粒。此外，CB[6

]

独特的柱状框架及其端口富集的羰基基团可与晶界/界面处未配位Pb

通过路易斯酸碱相互作用形成多齿锚定，从而钝化内部缺陷、稳固晶体结构并抑制非辐射复合；同时，缺陷钝化阻断离子迁移通道，抑制了内部离子迁移，从而大幅提升钙钛矿相结构的稳定性。基于此优化的n-i-p型器件实现了从22.92%到25.14%的光电转换效率提升，并且CB[6

]

的疏水空腔使得未封装的器件在25 ℃、(50 ± 5)% 相对湿度的条件下连续老化800 h后仍保留80.9%的初始效率。本文研究可以为钙钛矿太阳能电池的缺陷调控和稳定性提升提供一定的思路。

Abstract

Organic-inorganic hybrid perovskite solar cells have been lauded as the new hope in the photovoltaic field due to their rapidly increasing efficiency surpassing that of crystalline silicon cells and their cost-effective fabrication. However

they face significant limitations in device performance and long-term stability because the solution-processed polycrystalline films suffer from poor crystallization quality and a high density of defect states. To address this

columnar-structured

cucurbit[6

]

uril (CB[6

]

) was innovatively introduced as an additive into the perovskite precursor to modulate the crystallization quality of perovskite and passivate internal defects

thereby enhancing the efficiency and stability of devices. The introduction of CB[6

]

not only promotes uniform grain growth and yields larger-sized perovskite grains with fewer grain boundaries

but also forms multidentate anchoring with uncoordinated Pb

at grain boundaries/interfaces via Lewis acid-base interactions through its carbonyl-rich ports on the pillared framework

thereby passivating internal defects

stabilizing crystal structure

and suppressing non-radiative recombination. Additionally

stability of the perovskite phase is also improved by blocking ion migration pathways as a result of the suppression of defect generation. Based on this optimization

the n-i-p type devices achieve a power conversion efficiency improvement from 22.92% to 25.14%. Moreover

the hydrophobic cavity of CB[6

]

enables unencapsulated devices to retain 80.9% of their initial efficiency after continuous aging for 800 hours under conditions of 25 ℃ and 50 ± 5% relative humidity. This study offers valuable insights into defect regulation and stability enhancement of perovskite solar cells.

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references

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