Scholarlink

<p>Organometallic halide perovskite materials have garnered considerable attention due to their remarkable optical properties. The microscale flow-reactor synthesis method is a popular technique in pharmaceutical industries but new in the material science industry for producing inorganic lead-free Cesium Bismuth Iodide (Cs₃Bi₂I₉) perovskite inks on a large scale due to environmental and health concerns related to lead (Pb). Recent studies suggest that higher precursor concentrations may improve the synthesis efficiency of the device. Still, these conditions’ underlying mechanisms and effects are not yet well understood due to the less miscibility of CsI in polar organic solvents. Building on the advancements in microscale flow synthesis, we developed a high-concentration flow synthesis method to enhance efficiency and scalability by optimizing precursor concentrations and reaction parameters. The optical property of Cs₃Bi₂I₉ films with a bandgap of 2.2&#xa0;eV, determined through absorption spectra and Tauc plot analyses, were achieved using a molar ratio of cesium iodide to bismuth iodide (CsI/BiI₃) of 1.5:1. The residence time at 60&#xa0;s of T 2 ink formulation, resulted in a slight increase in average particle size from 145.4&#xa0;nm to 146.4&#xa0;nm and a modest improvement in power conversion efficiency (PCE) of solar cells from 0.18 to 0.52%. These devices employed conventional TiO₂ and Spiro-OMeTAD as electron and hole transport materials. The findings align with previous studies, indicating that optimizing parameters such as precursor concentration, reaction time, and residence time can significantly enhance performance. Furthermore, the scalability of the flow reactor method holds promise for the large-scale production of Cs₃Bi₂I₉ perovskites and their application in environmentally friendly photovoltaic devices.</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

Flow reactor-assisted hot injection method for the synthesis of high-quality cesium bismuth Iodide Ink

  • 期刊论文

  • 发表日期：

    2025年1月21日

查看全文
  • Gufran Umar Alam Shaikh,
  • FF Alia Azmi,
  • M. S. Sadek,
  • Wan Zulhafizhazuan,
  • A S M Mosabbir,
  • Minhaz Mahmood,
  • Puvaneswaran Chelvanathan,
  • Mohd Adib Ibrahim,
  • K. Sobayel,
  • Md. Khan,
  • Sobayel Bin Rafiq

摘要

Organometallic halide perovskite materials have garnered considerable attention due to their remarkable optical properties. The microscale flow-reactor synthesis method is a popular technique in pharmaceutical industries but new in the material science industry for producing inorganic lead-free Cesium Bismuth Iodide (Cs₃Bi₂I₉) perovskite inks on a large scale due to environmental and health concerns related to lead (Pb). Recent studies suggest that higher precursor concentrations may improve the synthesis efficiency of the device. Still, these conditions’ underlying mechanisms and effects are not yet well understood due to the less miscibility of CsI in polar organic solvents. Building on the advancements in microscale flow synthesis, we developed a high-concentration flow synthesis method to enhance efficiency and scalability by optimizing precursor concentrations and reaction parameters. The optical property of Cs₃Bi₂I₉ films with a bandgap of 2.2 eV, determined through absorption spectra and Tauc plot analyses, were achieved using a molar ratio of cesium iodide to bismuth iodide (CsI/BiI₃) of 1.5:1. The residence time at 60 s of T 2 ink formulation, resulted in a slight increase in average particle size from 145.4 nm to 146.4 nm and a modest improvement in power conversion efficiency (PCE) of solar cells from 0.18 to 0.52%. These devices employed conventional TiO₂ and Spiro-OMeTAD as electron and hole transport materials. The findings align with previous studies, indicating that optimizing parameters such as precursor concentration, reaction time, and residence time can significantly enhance performance. Furthermore, the scalability of the flow reactor method holds promise for the large-scale production of Cs₃Bi₂I₉ perovskites and their application in environmentally friendly photovoltaic devices.