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能源材料顶刊Energy & Environmental Science（IF=32.4）上以“Dual-site passivation by heterocycle functionalized amidinium cations toward high-performance inverted perovskite solar cells and modules”为题发表最新研究成果，昆明理工大学材料学院陈江照教授、河北工业大学陈聪教授、苏州大学唐建新教授、中科院化学所汪洋副研究员及阜阳师范大学张甲甲副教授为该论文的共同通讯作者，昆明理工大学、河北工业大学、中科院化学所和澳门科技大学为论文的通讯单位。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。

目前，大多数高效反式钙钛矿太阳能电池在氮气手套箱采用有毒反溶剂制备，这增加生产成本、降低器件性能再现性及与大面积组件不兼容。此外，界面陷阱态辅助的非辐射复合阻碍了反式钙钛矿电池效率和稳定性的进一步提升。鉴于此，陈江照、陈聪等人报道了基于杂环功能化脒阳离子的阴阳离子缺陷双位点钝化策略，有效稳定了钙钛矿/电子传输层界面和最大限度降低了界面非辐射复合损失。通过精确控制两个活性位点之间的距离和空间构象实现有机脒阳离子的双位点缺陷钝化。该双位点钝化使得吡啶功能化的4-脒基吡啶盐酸盐（APCl）拥有优异的缺陷钝化能力。基于APCl修饰的反式电池实现了26.83%（认证稳态效率为26.32%）的效率，这是基于真空闪蒸技术和空气中制备的电池报道的世界纪录效率。APCl修饰的反式电池在最大功率点持续跟踪2000小时后仍然保留初始效率的95.8%。而且，采用该双位点钝化技术制备的大面积组件取得了19.83%（面积为40.1cm²）的效率。

Fig. 1. Theoretical investigation on the interaction between organic cations and perovskite. (a-c) The chemical structures and electrostatic potential of (a) phFA⁺, (b) AP⁺ and (c) TFA⁺. (d-f) The binding energy of (d) phFA⁺, (e) AP⁺ and (f) TFA⁺ with FAPbI₃ containing V_I and V_FA defects in parallel configuration. (g) The summarized binding energy values of phFA⁺, AP⁺ and TFA⁺ with FAPbI₃ containing V_FA and V_I simultaneously. (h) Distance between amidinium cation and N atom on pyridine ring in AP⁺ (~4.655 Å). (i) Distance between amidinium cation and N atom on thiazole ring in TFA⁺ (~2.717 Å). (j) Schematic diagram of dual-site passivation of AP⁺ for perovskite surfaces containing V_FA and V_I.

Fig. 6. Photovoltaic performance and stability of PSCs. (a) The configuration of PSCs. (b) Statistics of V_OC, FF, PCE and J_SC of individual 10 devices based on the control, phFACl, APCl, and TFACl-modulated perovskite films. (c) J–V curves of the PSCs based on the control, phFACl, APCl, and TFACl-modulated perovskite films. (d) EQE curves of the PSCs based on the control, phFACl, APCl, and TFACl-modulated perovskite films. (e) J–V curves of the wide-bandgap PSCs based on the control and APCl-modulated perovskite films. (f) J-V curves and (g) photograph of the APCl-modulated perovskite module with an aperture area of 40.1 cm². (h) Normalized PCE for the control and phFACl, APCl and TFACl-modulated PSC devices over a long period in an environment with a relative humidity of 30%±5% and without encapsulation. (i) MPPT stability curves of the encapsulated PSCs without and with APCl. The inset picture shows a batch of PSC device samples used for stability tests.

论文链接：

Menghan Lu^#, Jike Ding^#, Quanxing Ma^#, Zuolin Zhang, Mengjia Li, Wenhuan Gao, Wenlong Mo, Boxue Zhang, Thierry Pauporté, Jiajia Zhang*, Yang Wang*, Jian-Xin Tang*, Jiangzhao Chen*, Cong Chen*. Dual-site passivation by heterocycle functionalized amidinium cations toward high-performance inverted perovskite solar cells and modules. Energy & Environmental Science 2025, DOI: 10.1039/d5ee00524h

https://pubs.rsc.org/en/content/articlelanding/2025/ee/d5ee00524h