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Related Concept Videos

Semiconductors01:22

Semiconductors

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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
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In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
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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.
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Related Experiment Video

Updated: Apr 29, 2026

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Semiconducting layered blue phosphorus: a computational study.

Zhen Zhu1, David Tománek1

  • 1Physics and Astronomy Department, Michigan State University, East Lansing, Michigan 48824, USA.

Physical Review Letters
|May 20, 2014
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new phase of phosphorus, "blue phosphorus," which is stable and layered like black phosphorus but has a wide band gap. This material is promising for electronic applications due to its unique structure and exfoliation properties.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid-State Chemistry

Background:

  • Black phosphorus is a stable, layered allotrope of phosphorus with unique electronic properties.
  • Graphite shares structural similarities with layered materials, influencing their electronic behavior.

Purpose of the Study:

  • To investigate a novel, stable phase of phosphorus, termed "blue phosphorus."
  • To characterize the structure and electronic properties of blue phosphorus.
  • To explore its potential for electronic applications and synthesis.

Main Methods:

  • Crystallographic analysis to determine the in-plane hexagonal structure and bulk layer stacking.
  • Electronic band structure calculations to determine the fundamental band gap.
  • Theoretical investigation of transformation pathways from black to blue phosphorus.

Main Results:

  • A new phosphorus allotrope, blue phosphorus, was identified with a layered structure akin to graphite.
  • Blue phosphorus exhibits a wide fundamental band gap, distinguishing it from graphite and black phosphorus.
  • The material is predicted to be easily exfoliable into quasi-two-dimensional forms.

Conclusions:

  • Blue phosphorus represents a novel material with a unique combination of stability and electronic properties.
  • Its wide band gap and potential for exfoliation make it a promising candidate for advanced electronic devices.
  • Understanding its synthesis and transformation pathways is crucial for future research and applications.