脉冲电场诱导NH3后处理策略用于钙钛矿太阳电池

李海方; 朱鹏鲲; 张志宇; 许腾; 樊冰冰; 李美成

doi:10.19912/j.0254-0096.tynxb.2025-0629

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (8) : 225-234. DOI: 10.19912/j.0254-0096.tynxb.2025-0629

脉冲电场诱导NH₃后处理策略用于钙钛矿太阳电池

李海方^1,2, 朱鹏鲲¹, 张志宇¹, 许腾¹, 樊冰冰^1,2, 李美成^1,2

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PULSED ELECTRIC FIELD-INDUCED NH₃ POST-TREATMENT STRATEGY FOR PEROVSKITE SOLAR CELLS

Li Haifang^1,2, Zhu Pengkun¹, Zhang Zhiyu¹, Xu Teng¹, Fan Bingbing^1,2, Li Meicheng^1,2

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摘要

提出一种脉冲电场诱导NH₃后处理钙钛矿薄膜表面的钝化策略。在脉冲电场驱动诱导下,NH₃分子中N原子与钙钛矿表面[PbI₆]^4-八面体框架中配位不饱和的Pb²⁺发生相互作用,稳定Pb²⁺缺陷,同时诱导强化NH₃中H原子与I^-离子的相互作用,抑制碘的迁移,减少碘空位的形成。经脉冲电场诱导的NH₃修饰的钙钛矿薄膜表面电位分布更加均匀,提高了载流子的传输速率,器件平均转换效率从23.32%提升至24.79%。将未封装的器件在空气中放置1000 h后,经脉冲电场诱导的NH₃修饰的器件保留了其初始转换效率的84%,远高于对照组器件的75%。

Abstract

A pulsed electric field-induced NH₃ post-treatment is proposed for passivating the surface of perovskite films. Under the induction of pulsed electric fields, N atoms in NH₃ molecules interact with uncoordinated Pb²⁺ sites in the [PbI₆]^4- octahedral framework on the perovskite surface, stabilizing Pb²⁺-related defects. Simultaneously, the pulsed electric field enhances the interaction between H atoms in NH₃ and the I^- ions, thereby suppressing the migration of iodine and reducing the formation of iodine vacancies. After the pulsed electric field-induced NH₃ modification, the surface potential distribution of the modified perovskite film becomes more uniform, leading to improved charge carrier transport. As a result, the average power conversion efficiency （PCE） of the devices increases from 23.32% to 24.79%. After aging at ambient condition for 1000 hours without encapsulation, the NH₃-treated devices subjected to the pulsed electric field retain 84% of their initial PCE, which is significantly higher than the 75% retained by the control counterparts.

导出引用

李海方, 朱鹏鲲, 张志宇, 许腾, 樊冰冰, 李美成. 脉冲电场诱导NH₃后处理策略用于钙钛矿太阳电池[J]. 太阳能学报. 2026, 47(8): 225-234 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0629

Li Haifang, Zhu Pengkun, Zhang Zhiyu, Xu Teng, Fan Bingbing, Li Meicheng. PULSED ELECTRIC FIELD-INDUCED NH₃ POST-TREATMENT STRATEGY FOR PEROVSKITE SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 225-234 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0629

中图分类号： TK914.4

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