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Related Concept Videos

Semiconductors01:22

Semiconductors

There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Types of Semiconductors01:20

Types of Semiconductors

Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
Solid–Solid Solutions01:24

Solid–Solid Solutions

The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.
Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Energy Bands in Solids01:01

Energy Bands in Solids

Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
 Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states that no two...

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Related Experiment Video

Updated: May 16, 2026

Monolayer Contact Doping of Silicon Surfaces and Nanowires Using Organophosphorus Compounds
09:45

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Published on: December 2, 2013

Solid-solution semiconductor nanowires in pseudobinary systems.

Baodan Liu1, Yoshio Bando, Lizhao Liu

  • 1World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 305-0044 Japan. baodanliu@imr.ac.cn

Nano Letters
|December 5, 2012
PubMed
Summary
This summary is machine-generated.

Synthesizing pseudobinary solid-solution semiconductor nanowires like (GaP)(1-x)(ZnS)(x) is achievable. Structure uniformity and lattice match are crucial for these quaternary nanostructures, enabling tunable optoelectronic properties.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid-State Chemistry

Background:

  • Semiconductor nanowires are crucial for advanced electronic and optoelectronic devices.
  • Developing novel multicomponent nanostructures with tunable properties remains a key challenge.
  • Pseudobinary solid solutions offer a pathway to engineer unique material characteristics.

Purpose of the Study:

  • To synthesize pseudobinary solid-solution semiconductor nanowires using specific compositional and structural designs.
  • To investigate the critical factors governing the formation of quaternary solid-solution nanostructures.
  • To explore the electrical transport properties of these novel nanowires and their potential applications.

Main Methods:

  • Synthesis of pseudobinary solid-solution nanowires including (GaP)(1-x)(ZnS)(x), (ZnS)(1-x)(GaP)(x), and (GaN)(1-x)(ZnO)(x).
  • Analytical high-resolution transmission electron microscopy (HRTEM) for structural analysis.
  • Energy dispersive X-ray spectroscopy (EDS) for compositional analysis.
  • Electrical transport measurements on individual nanowires.

Main Results:

  • Confirmed that structure uniformity and lattice match between binary components are essential for forming quaternary solid-solution nanostructures.
  • Observed an abrupt resistance increase in (GaP)(1-x)(ZnS)(x) nanowires with increasing ZnS concentration, leading to a semiconductor-to-insulator transition.
  • Demonstrated the successful synthesis of diverse pseudobinary solid-solution nanowires.

Conclusions:

  • The proposed method enables the rational synthesis of multicomponent nanosystems.
  • Structure uniformity and lattice matching are critical design parameters for solid-solution nanowire formation.
  • These nanowires exhibit tunable optoelectronic properties, with potential for semiconductor-to-insulator transitions.