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関連する概念動画

Common Ion Effect03:24

Common Ion Effect

46.8K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
46.8K
Test for Homogeneity01:23

Test for Homogeneity

2.4K
The goodness–of–fit test can be used to decide whether a population fits a given distribution, but it will not suffice to decide whether two populations follow the same unknown distribution. A different test, called the test for homogeneity, can be used to conclude whether two populations have the same distribution. To calculate the test statistic for a test for homogeneity, follow the same procedure as with the test of independence. The hypotheses for the test for homogeneity can...
2.4K
Tissue Homogenization and Cell Lysis01:32

Tissue Homogenization and Cell Lysis

10.3K
Tissue homogenization involves disintegrating tissue architecture and lysing cells, and is an early step in isolating and analyzing cellular components. The method used for homogenization depends on the sample type, the amount of sample available, the analyte to be obtained, and the sensitivity of the method. These methods are broadly classified as mechanical and non-mechanical methods.
Mechanical methods of tissue homogenization
These methods rely on applying external physical force to disrupt...
10.3K
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

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

4.3K
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...
4.3K
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

4.0K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
4.0K
Conjugate Addition of Enolates: Michael Addition01:08

Conjugate Addition of Enolates: Michael Addition

3.6K
The attack of a nucleophile at the β carbon of an α,β-unsaturated carbonyl compound is called conjugate addition. Conjugate addition reactions of active methylene compounds, such as β-diketones, β-keto esters, β-keto nitriles, and α-nitro ketones, are called Michael addition reactions.
3.6K

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関連する実験動画

Updated: Feb 5, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

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ペロフスキットの同質化された光電子特性:一般的な塩化物添加物で高効率の太陽電池の実現

Junke Wang1, Shuaifeng Hu1, Xinyu Gu2

  • 1Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, U.K.

Journal of the American Chemical Society
|February 3, 2026
PubMed
まとめ

メチルアモニウム塩化物 (MACl) と鉛塩化物 (PbCl2) の添加物を組み合わせることで,効率的な太陽電池のためのペロブスキート膜の品質を向上させます. この戦略は,ペロブスキート光伏の進歩に不可欠な均一性と安定性を改善します.

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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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関連する実験動画

Last Updated: Feb 5, 2026

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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

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19.1K

科学分野:

  • 材料科学 材料科学とは
  • フォトボルトイカは,太陽光発電です.
  • 固体化学 固体化学

背景:

  • ペロブスキート太陽電池は,最適な性能のために高品質のフィルムを必要とします.
  • 鉛塩化物 (PbCl2) やメチルアモニウム塩化物 (MACl) のような塩化物添加物は,ペロブスキート結晶化を制御するために使用されます.
  • フィルムの均一性に対する異なる塩化物添加物の形態の特定の影響は,完全に理解されていません.

研究 の 目的:

  • 異なる塩化物添加物のペロブスキート膜の特性への影響を調査する.
  • クロリド添加物が相変化とキャリアダイナミクスにどのように影響するかを理解する.
  • 大面積のペロブスキート太陽電池の性能と安定性を高めるための戦略を開発する.

主な方法:

  • MAClとPbCl2.2の様々な組み合わせを用いたペロブスキート膜の製造.
  • フィルムの結晶性,形状,光電子特性に関する特徴.
  • 逆転 (p-i-n) ペロブスキート太陽電池の製造と試験.

主要な成果:

  • MAClとPbCl2の戦略的組み合わせにより,結晶性と光電子的均一性が改善されました.
  • 逆転ペロブスキート太陽電池で26.4% (0.05cm2) と24.5% (1cm2) の認証効率を達成しました.
  • デバイスは65°Cで1200時間の動作後に88%の性能を維持しました.

結論:

  • クロリド添加物の形態のメカニズム的な違いが明らかにされました.
  • MAClとPbCl2の組み合わせは,高効率で安定した,広域のペロブスキート太陽光発電のための実行可能な戦略を提供します.
  • この発見は,熱的に安定したペロブスキート太陽光技術の進歩に寄与する.