TITLE

Focused-ion-beam platinum nanopatterning for GaN nanowires: Ohmic contacts and patterned growth

AUTHOR(S)
Nam, C. Y.; Kim, J. Y.; Fischer, J. E.
PUB. DATE
May 2005
SOURCE
Applied Physics Letters;5/9/2005, Vol. 86 Issue 19, p193112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nanopatterned Pt by Ga+ focused ion beam (FIB) decomposition of an organometallic precursor forms low resistance ohmic contacts on 40–70 nm diameter GaN nanowires (NWs) grown by thermal reaction of Ga2O3 and NH3. With no intentional doping, the wires are presumed to be n type. Thus, the linear I-V behavior is surprising since evaporated Pt usually forms Schottky barriers on n GaN. Ohmic behavior was not obtained for 130–140 diameter wires, even with thicker Pt contacts. A second application of FIB Pt nanopatterning was demonstrated by position-selective growth of GaN NWs on Pt catalyst dots. NW locations and density are defined by the position, size, and thickness of the Pt deposit. Combining these techniques provides a versatile platform for nanostructure research and development.
ACCESSION #
17164770

 

Related Articles

  • Fabrication of GaN-based nanoscale device structures utilizing focused ion beam induced Pt deposition. Motayed, Abhishek; Davydov, Albert V.; Vaudin, Mark D.; Levin, Igor; Melngailis, John; Mohammad, S. N. // Journal of Applied Physics;7/15/2006, Vol. 100 Issue 2, p024306 

    In this work we have demonstrated nanoscale GaN device structures made from individual GaN nanowires and electrical contacts utilizing focused ion beam (FIB) induced Pt deposition. These GaN nanowires were grown by direct reaction of Ga vapor with NH3 and had diameters ranging from 100 nm to 250...

  • Surface patterning nanoparticle-based arrays. Lu, Kathy; Hammond, Chase; Qian, Junmin // Journal of Materials Science;Feb2010, Vol. 45 Issue 3, p582 

    In this study, focused ion beam lithography is used to pattern different size and shape island arrays on silicon wafers. Cavity arrays of inverse shapes are then made on silicone mold surfaces by polymerization. After that, Al2O3 nanoparticle-based island arrays are created by a surface feature...

  • Platinum nanoparticle-functionalized tin dioxide nanowires via radiolysis and their sensing capability. Choi, Sun-Woo; Kim, Sang Sub // Journal of Materials Research;2012, Vol. 27 Issue 13, p1688 

    Platinum (Pt) nanoparticles were synthesized on tin dioxide (SnO2) nanowires by applying γ-ray radiolysis. The growth behavior of Pt nanoparticles was systematically investigated as a function of precursor concentration, illumination intensity and exposure time of the γ-rays. We found that...

  • Failure Analysis of Electronic Material Using Cryogenic FIB-SEM. Antoniou, Nicholas // Electronic Device Failure Analysis;Aug2013, Vol. 15 Issue 3, p12 

    The article focuses on the usefulness of cryogenic focused ion beam (FIB) technology with scanning electron microscope (SEM) for analyzing the failure of compound semiconductors which allows gallium FIB milling at room temperature. It discusses the preparation of transmission electron microscope...

  • Synthesis: Regime change for nanowire growth. Johansson, Jonas // Nature Nanotechnology;Sep2007, Vol. 2 Issue 9, p534 

    The article discusses research on the use of gold nanoparticles to grow semiconductor nanowires. It references a study by Erik Bakkers and colleagues in this same issue of "Nature Nanotechnology." They found that under certain conditions, the gold nanoparticles that seed the growth of nanowires...

  • Enhanced reactivity of nanoenergetic materials: A first-principles molecular dynamics study based on divide-and-conquer density functional theory. Shimojo, Fuyuki; Nakano, Aiichiro; Kalia, Rajiv K.; Vashishta, Priya // Applied Physics Letters;7/27/2009, Vol. 95 Issue 4, p043114 

    Integration of nanowires and nanoparticles of energetic materials into semiconducting structures is giving birth to “nanoenergetics-on-a-chip” technology. Understanding and controlling the reactions of nanoenergetic materials pose a theoretical challenge for combining...

  • Electrical Conductivity Studies on Individual Conjugated Polymer Nanowires: Two-Probe and Four-Probe Results. Yun Ze Long; Jean Luc Duvail; Meng Li; Changzhi Gu; Zongwen Liu; Ringer, Simon P. // Nanoscale Research Letters;Jan2010, Vol. 5 Issue 1, p237 

    Two- and four-probe electrical measurements on individual conjugated polymer nanowires with different diameters ranging from 20 to 190 nm have been performed to study their conductivity and nanocontact resistance. The two-probe results reveal that all the measured polymer nanowires with...

  • Low-power and ultrafast all-optical tunable plasmon-induced transparency in plasmonic nanostructures. Chai, Zhen; Hu, Xiaoyong; Zhu, Yu; Zhang, Fan; Yang, Hong; Gong, Qihuang // Applied Physics Letters;5/20/2013, Vol. 102 Issue 20, p201119 

    We report an ultrafast and low-power all-optical tunable plasmon-induced transparency in a plasmonic nanostructure consisting of a gold nanowire grating embedded in a polycrystalline lithium niobate layer, realized based on strong quantum confinement enhancing nonlinearity. The all-optical...

  • Semiconductor nanoparticles for photovoltaics. Habinshuti, J.; Turrell, S.; Kinowski, C.; Stievenard, D.; Grandidier, B.; Xu, T.; Cristini, O. // AIP Conference Proceedings;8/6/2010, Vol. 1267 Issue 1, p51 

    The article discusses the application of semiconductor nanoparticles (NPs) for photovoltaic conversion. It is said that the present-day conversion methods that use silicon (Si) give relatively low yields. Researchers are striving to determine a way of increasing this conversion yield. The...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics