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相关概念视频

Base-Catalyzed Aldol Addition Reaction01:08

Base-Catalyzed Aldol Addition Reaction

4.6K
As depicted in Figure 1, base-catalyzed aldol addition involves adding two carbonyl compounds in aqueous sodium hydroxide to form a β-hydroxy carbonyl compound.
4.6K
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)

4.4K
α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
4.4K
Carbon Skeletons01:12

Carbon Skeletons

115.6K
Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...
115.6K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.9K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.9K
Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.0K
The Carbon Cycle01:14

The Carbon Cycle

44.1K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
44.1K

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相关实验视频

Updated: Feb 14, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

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由多功能添加剂诱导的协同结晶和缺陷被动化,用于>20%高效的基于碳的矿太阳能电池.

Reza Ghayoor1,2, Fatemeh Ghasemi1, Fariba Tajabadi3

  • 1Center for Nanoscience and Nanotechnology, Institute for Convergence Science & Technology, Sharif University of Technology, Tehran 1458889694, Iran.

ACS applied materials & interfaces
|February 12, 2026
PubMed
概括

这项研究介绍了2-烯-2-甲基硫酸 (AMPS) 作为碳基矿太阳能电池 (C-PSC) 的多功能添加剂. 通过被动化缺陷和减少离子迁移,AMPS提高了设备的效率,稳定性和结晶性.

关键词:
2-烯-2-甲基硫酸 (AMPS) 是一种基于碳的矿石太阳能电池结晶化 结晶化的过程.缺陷被动化 缺陷被动化墨水添加剂 墨水添加剂多功能组是一个多功能组.

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Flash Infrared Annealing for Perovskite Solar Cell Processing
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Flash Infrared Annealing for Perovskite Solar Cell Processing

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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

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相关实验视频

Last Updated: Feb 14, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

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Flash Infrared Annealing for Perovskite Solar Cell Processing
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Flash Infrared Annealing for Perovskite Solar Cell Processing

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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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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:

  • 矿太阳能电池 (PSC) 显示出巨大的潜力,但存在稳定性和效率问题.
  • 多功能分子添加剂是克服PSC这些局限性的关键.

研究的目的:

  • 调查2-烯-2-甲基硫酸 (AMPS) 作为碳基PSC (C-PSC) 的添加剂.
  • 评估AMPS增强结晶,消极缺陷和抑制离子迁移的能力.

主要方法:

  • 密度函数理论 (DFT) 计算和光谱分析被用来研究AMPS-矿相互作用.
  • 用不同的AMPS度制造和表征C-PSC.

主要成果:

  • AMPS表现出强大的界面结合,优选的Pb-SO3H协调,以及有效的缺陷被动化.
  • 优化的AMPS内容导致了20.2%的冠军功率转换效率 (PCE),改善了填充因子和增强的电荷提取.
  • 设备显示离子迁移减少,理想性系数较低,在经过1000小时的运行后保留了95%的初始PCE.

结论:

  • AMPS是一种具有成本效益的,可溶液加工的添加剂,可提高C-PSC的性能和稳定性.
  • 通过调节结晶,使缺陷被动化,并抑制离子迁移,AMPS有效地稳定矿晶格.
  • 这项工作提出了一个可扩展的战略,用于开发高效和稳定的下一代矿光伏.