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

被引：18
|
作者：
Bekenstein, Yehonadav [1 ,2 ,3 ]
Vinokurov, Kathy [1 ,2 ]
Banin, Uri [1 ,2 ]
Millo, Oded [2 ,3 ]
机构：
[1] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel
[2] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, IL-91904 Jerusalem, Israel
[3] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
来源：
NANOTECHNOLOGY | 2012年 / 23卷 / 50期
基金：
欧洲研究理事会;
关键词：
GOLD NANOCAGES; GROWTH; NANOCRYSTALS; SYSTEM;
D O I：
10.1088/0957-4484/23/50/505710
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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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页数：6
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