2026-08-11 中国科学院（CAS）
＜関連情報＞
- https://english.cas.cn/newsroom/research-news/202608/t20260810_1186979.shtml
- https://www.cell.com/chem/abstract/S2451-9294(26)00259-7
多座配位子アンカー分子を用いたブレードコーティング自己組織化単分子膜による、拡張性と安定性に優れたペロブスカイト太陽電池 Multidentate anchoring molecule-assisted blade-coated self-assembled monolayer for scalable and stable perovskite photovoltaics
Cheng Peng ∙ Siyuan Li ∙ Hongguang Meng ∙ … ∙ Xiao Wang ∙ Zhongmin Zhou ∙ Shuping Pang
Chem Published:August 10, 2026
DOI:https://doi.org/10.1016/j.chempr.2026.103193
Highlights
- Multidentate co-adsorbate suppresses SAM aggregation for blade coating
- Hydrophilic –SH terminals improve perovskite crystallization and interfacial contact
- Small-area devices and 20.9 cm2 modules reach 26.60% and 23.31% PCEs
Summary
Self-assembled monolayers (SAMs) have emerged as a pivotal class of materials for engineering a high-performance perovskite/hole-transport layer interface; however, their scalable fabrication remains severely hindered by intrinsic molecular aggregation. Here, we report a blade-coating-compatible co-deposition strategy by incorporating a dendritic multidentate thiol-anchoring molecule, pentaerythritol tetra(3-mercaptopropionate) (PMP), into the [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4P) matrix. Strong hydrogen-bonding interactions between PMP and Me-4P effectively suppress SAM aggregation, whereas the exposed terminal thiol groups enhance surface wettability, promote perovskite crystallization, and mitigate residual strain at the buried interface. This strategy is also applicable to various commonly used SAMs. The resulting small-area devices delivered a champion power conversion efficiency of 26.60% (certified at 26.23%). A mini-module (20.9 cm2) achieved a remarkable efficiency of 23.31%. Moreover, the devices maintained 96% and 91% of their initial efficiencies after 1,000 h of continuous maximum power point (MPP) tracking and aging at 85°C, respectively.
