Scholarlink

<p>Passivation molecules with highly reactive molecular ligands can penetrate bulk three-dimensional (3D) perovskite film, resulting in a mixed-dimensional phase of two-dimensional (2D) perovskite through a progressive diffusion process. Here we utilize a non-invasive surface reaction strategy to trigger interfacial solid reactions between passivation molecules and 3D perovskite by precision regulation of the cation surface diffusion under temperature and applied pressure, achieving a phase-pure 2D perovskite contact layer with a well-defined dimension. This non-invasive surface reaction approach is compatible with most Ruddlesden–Popper molecules and prevents the progressive phase transitions typically observed in solution-based processes. The as-prepared champion device (n–i–p type) delivers a power conversion efficiency of 26.13% (certified efficiency of 25.66%, 0.085 cm<sup>2</sup>) without efficiency loss after 1,200 h of operational stability tests (ISOS-L-1) and a <i>T</i><sub>87</sub> of 1,145 h (ISOS-L-2). The mini-module (n–i–p type) achieves an efficiency of 23.03% (certified quasi-steady-state power conversion efficiency of 22.32%, aperture area 13.94 cm<sup>2</sup>) with a <i>T</i><sub>80</sub> of 1,200 h.</p><p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Surface diffusion engineering of a 2D perovskite layer for efficient perovskite photovoltaics

  • 期刊论文

  • 发表日期：

    2025年8月28日

查看全文
  • Kun Zhang,
  • Yang Wang,
  • Lutong Guo,
  • Mingquan Tao,
  • Haodan Guo,
  • Xiwen Zhang,
  • Zhaofei Song,
  • Jinxu Wen,
  • Yongrui Yang,
  • Jiangyang Shao,
  • Huanping Zhou,
  • Yanlin Song

摘要

Passivation molecules with highly reactive molecular ligands can penetrate bulk three-dimensional (3D) perovskite film, resulting in a mixed-dimensional phase of two-dimensional (2D) perovskite through a progressive diffusion process. Here we utilize a non-invasive surface reaction strategy to trigger interfacial solid reactions between passivation molecules and 3D perovskite by precision regulation of the cation surface diffusion under temperature and applied pressure, achieving a phase-pure 2D perovskite contact layer with a well-defined dimension. This non-invasive surface reaction approach is compatible with most Ruddlesden–Popper molecules and prevents the progressive phase transitions typically observed in solution-based processes. The as-prepared champion device (n–i–p type) delivers a power conversion efficiency of 26.13% (certified efficiency of 25.66%, 0.085 cm2) without efficiency loss after 1,200 h of operational stability tests (ISOS-L-1) and a T87 of 1,145 h (ISOS-L-2). The mini-module (n–i–p type) achieves an efficiency of 23.03% (certified quasi-steady-state power conversion efficiency of 22.32%, aperture area 13.94 cm2) with a T80 of 1,200 h.