Zhou Junjie, Lv Jiaying, Tan Liguo, Li Hang, Jiao Boxin, Li Minghao, Liu Yue, Jiang Chaofan, Hua Ruimao, Yi Chenyi
State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China.
Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Adv Mater. 2025 Jul;37(26):e2502916. doi: 10.1002/adma.202502916. Epub 2025 Apr 11.
Film morphology and surface/interface defect density play a critical role in determining the efficiency and stability of perovskite solar cells (PSCs). Here, a chlorine-substituted aromatic polycyclic derivative (BNCl) is reported, which shows strong interaction with both lead iodide and dimethyl sulfoxide, to regulate the crystallization of perovskite, along with effective passivation of grain boundaries and surface. In addition, the extruded BNCl molecule at the hole transport layer (HTL)/perovskite interface can facilitate the hole transport, leading to better charge transfer. As a result, certified power conversion efficiencies (PCEs) of 25.04% and 22.81% are achieved for PSCs and minimodules with aperture areas of 1 cm and 12 cm respectively. In addition, the device maintained 80% of its initial efficiency after 2500 h of maximum power point (MPP) tracking under ISOS-L-1 standard.
薄膜形态和表面/界面缺陷密度在决定钙钛矿太阳能电池（PSC）的效率和稳定性方面起着关键作用。在此，报道了一种氯取代的芳族多环衍生物（BNCl），它与碘化铅和二甲基亚砜都表现出强烈的相互作用，以调节钙钛矿的结晶，同时有效钝化晶界和表面。此外，在空穴传输层（HTL）/钙钛矿界面处挤出的BNCl分子可以促进空穴传输，从而实现更好的电荷转移。结果，孔径面积分别为1平方厘米和12平方厘米的PSC和微型模块的认证功率转换效率（PCE）分别达到25.04%和22.81%。此外，在ISOS-L-1标准下进行2500小时最大功率点（MPP）跟踪后，该器件保持了其初始效率的80%。
