Electronic properties of hybrid Cu2S/Ru semiconductor/metallic- cage nanoparticles

Yehonadav Bekenstein; Kathy Vinokurov; Uri Banin; Oded Millo

doi:https://doi.org/10.1088/0957-4484/23/50/505710

Electronic properties of hybrid Cu₂S/Ru semiconductor/metallic- cage nanoparticles

Yehonadav Bekenstein, Kathy Vinokurov, Uri Banin, Oded Millo

The Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

Abstract

Hybrid inorganic nanoparticles, comprising a semiconducting Cu₂S quantum-dot (QD) core encapsulated by a metallic Ru cage-like shell, and each of their individual components, are studied via scanning tunneling spectroscopy. Bare Cu₂S QDs show nearly identical semiconducting-like I-V characteristics while the empty Ru cages exhibit single electron tunneling effects - the Coulomb blockade and staircase. Surprisingly, in some cases negative differential conductance features, with periodicity that correlates to the Coulomb staircase, were observed. The tunneling spectra measured on the hybrid QDs varies greatly along a single particle, manifesting synergetic electrical properties that originate from this unique semiconducting-metallic interface.

Original language	English
Article number	505710
Journal	Nanotechnology
Volume	23
Issue number	50
DOIs	https://doi.org/10.1088/0957-4484/23/50/505710
State	Published - 21 Dec 2012

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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abstract = "Hybrid inorganic nanoparticles, comprising a semiconducting Cu2S quantum-dot (QD) core encapsulated by a metallic Ru cage-like shell, and each of their individual components, are studied via scanning tunneling spectroscopy. Bare Cu2S QDs show nearly identical semiconducting-like I-V characteristics while the empty Ru cages exhibit single electron tunneling effects - the Coulomb blockade and staircase. Surprisingly, in some cases negative differential conductance features, with periodicity that correlates to the Coulomb staircase, were observed. The tunneling spectra measured on the hybrid QDs varies greatly along a single particle, manifesting synergetic electrical properties that originate from this unique semiconducting-metallic interface.",

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N2 - Hybrid inorganic nanoparticles, comprising a semiconducting Cu2S quantum-dot (QD) core encapsulated by a metallic Ru cage-like shell, and each of their individual components, are studied via scanning tunneling spectroscopy. Bare Cu2S QDs show nearly identical semiconducting-like I-V characteristics while the empty Ru cages exhibit single electron tunneling effects - the Coulomb blockade and staircase. Surprisingly, in some cases negative differential conductance features, with periodicity that correlates to the Coulomb staircase, were observed. The tunneling spectra measured on the hybrid QDs varies greatly along a single particle, manifesting synergetic electrical properties that originate from this unique semiconducting-metallic interface.

AB - Hybrid inorganic nanoparticles, comprising a semiconducting Cu2S quantum-dot (QD) core encapsulated by a metallic Ru cage-like shell, and each of their individual components, are studied via scanning tunneling spectroscopy. Bare Cu2S QDs show nearly identical semiconducting-like I-V characteristics while the empty Ru cages exhibit single electron tunneling effects - the Coulomb blockade and staircase. Surprisingly, in some cases negative differential conductance features, with periodicity that correlates to the Coulomb staircase, were observed. The tunneling spectra measured on the hybrid QDs varies greatly along a single particle, manifesting synergetic electrical properties that originate from this unique semiconducting-metallic interface.

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Electronic properties of hybrid Cu₂S/Ru semiconductor/metallic- cage nanoparticles

Abstract

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