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相关概念视频

Quantum Numbers02:43

Quantum Numbers

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It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
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The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
57.3K
Alkyl Halides02:45

Alkyl Halides

20.0K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
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Dot Product01:29

Dot Product

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The dot product is an essential concept in mathematics and physics.
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
966
The Dot Product01:26

The Dot Product

263
Measuring how one directional quantity affects another along a specific path involves comparing their orientation and strength. When two such quantities are represented using direction and amount, a numerical result is computed to show how much one acts along the path of the other. This result comes from a rule combining both inputs' horizontal and vertical parts and adding the results.This calculation gives a single value that grows larger when both inputs point in similar directions and...
263
Acid Halides to Esters: Alcoholysis01:12

Acid Halides to Esters: Alcoholysis

4.0K
Alcoholysis is a nucleophilic acyl substitution reaction in which an alcohol functions as a nucleophile. Acid halides react with alcohol to produce esters. The mechanism proceeds in three steps:
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这页已由机器翻译。其他页面可能仍然显示为英文。View in English
  1. 首页
  2. 研究领域
  3. 物理科学
  4. 原子,分子和光学物理
  5. 激光和量子电子
  6. 来自化 Perovskite 量子点超网的超光

来自化 PeroVskite 量子点超网的超光

Gabriele Rainò1,2,3, Michael A Becker4,5, Maryna I Bodnarchuk6

  • 1Department of Chemistry and Applied Bioscience, Institute of Inorganic Chemistry, ETH Zurich, Zurich, Switzerland. rainog@ethz.ch.

Nature
|November 9, 2018

相关实验视频

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

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Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
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Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

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

Published on: September 8, 2017

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在PubMed 上查看摘要

概括
此摘要是机器生成的。

超光是一种量子光现象,在矿纳米晶体中实现. 高度排序的纳米晶体超级晶格使强烈,连贯的光爆发成为可能, 克服了以前的限制.

科学领域:

  • 量子光学
  • 材料科学
  • 纳米技术

背景情况:

  • 超光是一种量子现象,涉及来自激发发射器的集体光发射.
  • 实现超光需要精确控制发射器相互作用和环境脱,限制其观察到特定系统.
  • 结合体纳米晶体尽管具有作为光子源的潜力,但由于辐射扩大和快速脱相,它们没有表现出超光.

研究的目的:

  • 在状矿纳米晶体中展示超光.
  • 研究自我组织的矿纳米晶体超级网的潜力,以产生连贯的光现象.

主要方法:

  • 使用化 (CsPbX3) 晶体制造高排序的三维超级晶体.
  • 在高激发密度下,光学属性的表征,包括发射动态,相干时间和光子统计.

主要成果:

  • 在矿纳米晶体超晶体中观察到超光的关键特征,包括动态红移发射和加速辐射衰变 (>20倍).
  • 证明了延长的第一阶连贯时间 (> 4 倍),光子聚合和伯纳姆 - 环行为.
  • 在一个新的纳米晶体系统中实现了半透镜扩展的连贯状态.

结论:

  • 自组织的矿纳米晶超可以表现出超光,克服以前的材料限制.

相关实验视频

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

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Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
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Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

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

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  • 这些发现为增强的光电子设备和新的量子光源提供了可能性.
  • 这项研究强调了工程纳米晶体组件在先进量子光学应用中的潜力.