Selective electroless coating of palladium nanoparticles on metallic single-walled carbon nanotube

被引：5
|
作者：
Feng, Yiyu [1 ]
Lv, Peng [1 ]
Zhang, Xuequan [1 ]
Li, Yu [1 ]
Feng, Wei [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 08期
基金：
中国国家自然科学基金;
关键词：
carbon nanotubes; doping; electroless deposited coatings; electroless deposition; elemental semiconductors; field effect transistors; metallic thin films; nanoparticles; ohmic contacts; palladium; Raman spectra; semiconductor nanotubes; semiconductor-metal boundaries; FIELD-EFFECT TRANSISTORS; CONTACT;
D O I：
10.1063/1.3483615
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The selective electroless coating of palladium (Pd) nanoparticles on metallic single-walled carbon nanotube (SWNT) was studied. The remarkable increase in conductivity of SWNT/Pd films up to fourfold higher than pure SWNT was due to p-type doping and Ohmic contact. Metallic behavior of SWNT/Pd-Field effect transistor (on/off ratio=1.2) was attributed to more hole carriers and no electrostatic barrier between nanotube and Pd. G-band and radial breathing mode in Raman indicates a definitive increase in the proportion of metallic SWNT. Results indicate Pd are selectively coated on metallic SWNT with more negative potential allowing for the electroless Pd(2+) reduction.
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页数：3
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