Scholarlink

<p>Self-assembled monolayers (SAMs) provide a powerful method for modifying the interfacial properties of thin-film architectures in perovskite solar cells (PSCs). This study explores the impact of amino-terminated SAMs on the structural and electronic properties of hybrid perovskite films and the overall performance of PSCs. Specifically, COOH-Sp-Y molecules were designed with carboxyl anchor groups for strong attachment to TiO<sub>2</sub> substrates, while varying spacers (Sp = -(CH<sub>2</sub>)<sub>n</sub>-PP-(CH2)<sub>m</sub>, P = phenyl) enable precise molecular organization. The terminal NH<sub>2</sub>/NH<sub>3</sub><sup>+</sup> groups improve compatibility with the perovskite layer, enhancing film morphology, apparent filling levels, and photovoltaic performance. A systematic comparison is conducted to evaluate the influence of different SAM spacers on MAPbI₃ and mixed-cation perovskites. Characterization by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM-EDX) reveals significant enhancements in the quality of SAM-treated films, leading to higher power conversion efficiencies and improved device stability. This work demonstrates the potential of interface engineering using SAMs to optimize the performance and durability of perovskite solar cells.</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

Designing amino-terminated self-assembled monolayers on TiO₂ for enhanced interface engineering in perovskite solar cells: boosting efficiency and stability

  • 期刊论文

  • 发表日期：

    2025年3月18日

查看全文
  • Asma Torkhani,
  • Yahya Hami,
  • Faiza Mamèche,
  • Sarra Gam Derouich,
  • Philippe Decorse,
  • Alexandre Chevillot,
  • Fayçal Kouki,
  • Philippe Lang

摘要

Self-assembled monolayers (SAMs) provide a powerful method for modifying the interfacial properties of thin-film architectures in perovskite solar cells (PSCs). This study explores the impact of amino-terminated SAMs on the structural and electronic properties of hybrid perovskite films and the overall performance of PSCs. Specifically, COOH-Sp-Y molecules were designed with carboxyl anchor groups for strong attachment to TiO2 substrates, while varying spacers (Sp = -(CH2)n-PP-(CH2)m, P = phenyl) enable precise molecular organization. The terminal NH2/NH3+ groups improve compatibility with the perovskite layer, enhancing film morphology, apparent filling levels, and photovoltaic performance. A systematic comparison is conducted to evaluate the influence of different SAM spacers on MAPbI₃ and mixed-cation perovskites. Characterization by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM-EDX) reveals significant enhancements in the quality of SAM-treated films, leading to higher power conversion efficiencies and improved device stability. This work demonstrates the potential of interface engineering using SAMs to optimize the performance and durability of perovskite solar cells.