Cation–Anion Synergy Enables Uniform and Stable SAMs for High‐Efficiency Perovskite/TOPCon Tandem Solar Cells
Year: 2026
Type: article
Abstract: ABSTRACT Hole‐selective self‐assembled monolayers (SAMs) have recently boosted the efficiency of perovskite/silicon tandem solar cells (TSCs), but constructing dense, uniform, and particularly stable SAMs on textured surfaces remains challenging. Here, a cation–anion synergistic strategy is employed to suppress SAMs clustering and enhance molecular anchoring stability. The combined effects of cation–π interaction and phosphonic acid deprotonation enable the formation of high‐quality SAMs and perovskite absorbers, while simultaneously improving their interfacial contact at the buried interface. The resulting wide‐bandgap perovskite solar cells yielded a power conversion efficiency (PCE) of 23.04%, maintaining 84% of their initial efficiency after 1500 h of maximum power point (MPP) tracking under ISOS‐L‐1 protocol. Moreover, a 1 cm 2 monolithic perovskite/silicon tandem solar cell based on textured tunnel oxide passivated contacts (TOPCon) delivered an impressive efficiency of 32.13%, representing the highest reported value to date for perovskite/TOPCon tandems.
Source: Advanced Science
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,730
Awards: 数据-机理双驱动的机器学习建模框架：钙钛矿太阳电池的光热老化性能预测及逆向设计, G1902611270, G2092832829, G2094054449, G2105269591, G2444687823, G2748072063, 基于可交联多功能材料的高效稳定钙钛矿/硅叠层太阳能电池, 高效钙钛矿/硅叠层太阳电池的先进光电结构设计与性能研究, 微纳二级绒面在钙钛矿/硅叠层器件的产业化应用研究, 低压环境-超声协同的钙钛矿薄膜喷涂工艺开发：抑制飞溅与薄膜生长调控, G3323363122, G3646909270, G4356777424, G5096149393, G542736046, G5787223723, 基于C60 界面氧阻隔与Cr-O-In 互锁界面的钙钛矿/晶硅叠层电池稳定性提升机制研究, 钙钛矿/硅叠层电池稳定性中载流子–离子–缺陷协同效应及其调控机制, G8260043527
OpenAlex ID: W7128958476