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相关概念视频

Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

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Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
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相关实验视频

Updated: Jul 17, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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同时稳定前体溶液和控制结晶动力学,用于高性能矿太阳能电池.

Nan Wu1, Tinghuan Yang1, Zhichao Wang1

  • 1Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China.

Advanced materials (Deerfield Beach, Fla.)
|September 5, 2023
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概括

一种新的添加剂,-N,N,N′′,N′′-四甲基甲胺基六酸 (TFFH),稳定矿前体溶液并改善结晶. 这导致室内应用的高效和稳定的矿太阳能电池.

关键词:
控制结晶的过程室内太阳能电池是什么意思矿太阳能电池是如何使用的稳定溶液的稳定性解决方案

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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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科学领域:

  • 材料科学 材料科学 材料科学
  • 可再生能源可再生能源是可再生能源.
  • 太阳能光伏发电是如何实现的

背景情况:

  • 金属化物矿太阳能电池 (PSC) 显示出高效率,但存在缺陷.
  • 缺陷来自于老化前体溶液和结晶过程中,阻碍可重复性和性能.

研究的目的:

  • 引入-N,N,N′′,N′′-四甲基甲胺六酸盐 (TFFH) 作为双作用添加剂.
  • 为了稳定前体溶液并增强基于formamidinium酸 (FAPbI3) 的矿室内光伏的结晶动态.

主要方法:

  • 研究了TFFH在稳定前体溶液中的作用,通过防止氧化.
  • 利用时间解析的光学诊断来研究矿结晶的动态.
  • 分析了TFFH与矿框架的相互作用,用于缺陷被动化.

主要成果:

  • TFFH抑制了前体溶液的氧化,并使低协调的Pb2+被动化.
  • 强烈的FA+···TFFH···Pb─I相互作用延长结晶并使现场缺陷被动化.
  • 优化的PSC表现出更大的粒度,更好的晶体方向,减少缺陷和增强的电荷提取.

结论:

  • TFFH可以同时稳定前体溶液和调节结晶动态.
  • 在1002卢克斯照明下,为矿室内光伏系统实现了创纪录的42.43%的效率.
  • 这种双重方法是改善矿太阳能电池可重复性和效率的有希望的策略.