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関連する概念動画

π Molecular Orbitals of the Allyl Cation and Anion01:18

π Molecular Orbitals of the Allyl Cation and Anion

4.1K
An allyl group is a three-carbon conjugated system where the sp³-hybridized allylic carbon is bonded to a CH=CH2 group via a single bond. Allyl anions can be obtained by treating propene with a strong base that can deprotonate methyl groups. Allyl cations are formed as intermediates during substitution reactions involving allylic halides. In both cases, the hybridization of the allylic carbon changes from sp3 to sp2, giving rise to a carbon chain with three sp2-hybridized carbons, each with...
4.1K
Metallic Solids02:37

Metallic Solids

18.2K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
18.2K
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

9.5K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
9.5K
Valence Bond Theory02:42

Valence Bond Theory

8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
Molecular Orbital Theory II03:51

Molecular Orbital Theory II

19.0K
Molecular Orbital Energy Diagrams
19.0K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.2K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
41.2K

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関連する実験動画

Updated: Jun 5, 2025

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
09:49

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

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Al2B12C 独特の B-C フレームワークによって駆動される高アンビポラーモビリティ

Shicong Ding1, Sheng Wang1, Yong Liu1

  • 1State Key Laboratory of Metastable Materials Science & Technology and Hebei Key Laboratory of Microstructural Material Physics, School of Science, Yanshan University, Qinhuangdao 066004, China.

Journal of the American Chemical Society
|December 4, 2024
PubMed
まとめ

研究者らは Al2B12C という新しい半導体を発見し,アンビポラー流動性が立方ボロンアルセニドを上回った. この材料は,優れたキャリア輸送特性により,先進的な電子機器と太陽電池に希望を示しています.

さらに関連する動画

Plasma-assisted Molecular Beam Epitaxy of N-polar InAlN-barrier High-electron-mobility Transistors
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Plasma-assisted Molecular Beam Epitaxy of N-polar InAlN-barrier High-electron-mobility Transistors

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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関連する実験動画

Last Updated: Jun 5, 2025

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

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Plasma-assisted Molecular Beam Epitaxy of N-polar InAlN-barrier High-electron-mobility Transistors
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Plasma-assisted Molecular Beam Epitaxy of N-polar InAlN-barrier High-electron-mobility Transistors

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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科学分野:

  • 材料科学
  • 固体物理学
  • 半導体に関する研究

背景:

  • 先進的な電子機器には不可欠ですが 希少です
  • 立方ボロンアルセニド (BAs) は,現在,移動性が約1600cm2V-1s-1である主要な二極物質である.
  • 優れたアンビポーラ特性を持つ新しい半導体の開発は次世代技術にとって不可欠です.

研究 の 目的:

  • 半導体Al2B12Cのアンビポーラキャリア輸送の可能性を調査する.
  • Al2B12Cの基本的メカニズムを予測し理解する.
  • アル2B12Cを電子と太陽光発電の潜在的用途に評価する.

主な方法:

  • Al2B12Cの電子構造と輸送特性を調べるために,第一原理の計算を使用した.
  • 材料の結晶構造と結合の分析により 独特のB-C構造が明らかになりました
  • 穴と電子輸送を含むキャリア輸送機構は理論的に調査された.

主要な成果:

  • Al2B12Cは,優れたアンビポーラキャリア輸送行動を示すと予測されています.
  • Al2B12Cの理論的な両極移動は2095 cm2 V−1 s−1 まで達する.
  • 穴の輸送はC-Al-Cチャネルに起因し,電子の輸送はB12単位でπ電子を含む. 極光フォノン散乱は移動性を制限する.

結論:

  • Al2B12Cは,BAと比較して優れたアンビポラー移動性を有する非常に有望な半導体として浮上しています.
  • 独特の電子構造と高度なモビリティにより,高度な電子および光伏アプリケーションに適しています.
  • Al2B12Cは,高性能で環境に優しい半導体材料の探求における重要な進歩を表しています.