近日，昆明理工大学材料科学与工程学院陈江照教授团队在材料顶刊Advanced Materials（IF=27.4）上以“Immobilizing lead and healing surface defects via perfluorinated tertiary amine molecules enables high-performance sustainable inverted perovskite solar cells”为题发表最新研究成果，昆明理工大学陈江照教授、河北工业大学陈聪教授和苏州大学唐建新教授为论文的共同通讯作者，昆明理工大学为论文的共同通讯单位。该研究工作得到国家自然科学基金面上、地区科学基金、兵团重点领域科技攻关计划等项目的资助。

由表面缺陷引起的本征不稳定性和非辐射复合阻碍了p-i-n反式钙钛矿电池的进一步发展。同时，由铅泄露导致的环境不友好制约着反式钙钛矿电池的商业化应用。鉴于此，我们报道了一种通用的全氟化策略来固定铅和钝化钙钛矿薄膜表面缺陷。我们证明了全氟化三乙胺（PFTEA）能够与PbI2配位形成PFTEA·PbI2络合物，这有利于抑制铅泄露和促进表面缺陷钝化。由于显著降低的非辐射复合，PFTEA修饰的反式钙钛矿电池取得了26.65%的认证稳态效率，这是真空闪蒸技术钙钛矿电池报道的最高效率。而且，PFTEA修饰的反式钙钛矿电池在最大功率点持续工作1000小时后仍然保留初始效率的92%。本工作通过全氟化策略为推动反式光伏技术的可持续发展提供了一种简单而有效的路径。

Fig. 1. (a) Molecular structure of TEA, PFTEA, and PFTBA. (b) Schematic illustration of the preparation process of passivated perovskite films via TEA, PFTEA, and PFTBA. (c) FTIR spectra of the TEA without and with PbI2. (d) FTIR spectra of PFTEA without and with PbI2. (e) FTIR spectra of PFTBA without and with PbI2. (f) UV-Vis absorption spectra of 0.1 mg/mL PbI2 solutions without or with TEA, PFTEA, and PFTBA. The inset shows a digital image of PbI2 solutions without or with TEA, PFTEA, and PFTBA. (g) XRD patterns of PbI2 without or with TEA, PFTEA, and PFTBA. (h) Pb 4f XPS spectra of the perovskite films without or with TEA, PFTEA, and PFTBA. (i-j) 19F NMR spectra of PFTEA and PFTEA+PbI2. (k) 1H NMR of FAI and FAI+PFTEA.

Fig. 4. (a) Schematic device structure adopted in this work. (b) Statistical distribution diagram of the PCE, VOC, JSC, and FF. The J-V curves of the best-performing control and modulated (c) and (d) 1.53 eV-devices and (e) 1.66 eV-devices. * represents that perovskite devices are prepared in N2, while the others are prepared under air ambient conditions. (f) MPP tracking stability of the encapsulated devices under one sun illumination of 100 mW cm-2 provided by white light LED. (g) Lead concentration in deionized water after soaking for 60 min. The concentration of Pb2+ in water was determined by inductively coupled plasma optical emission spectroscopy (ICP-OES) measurement.

论文链接：

Zuolin Zhang, Jike Ding, Hao Liu, Chao Li, Mengjia Li, Thierry Pauporté, Jian-xin Tang*, Jiangzhao Chen*, Cong Chen*. Immobilizing lead and healing surface defects via perfluorinated tertiary amine molecules enables high-performance sustainable inverted perovskite solar cells. Advanced Materials 2025, 2508126

https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202508126