Flower like silicon nanostructures

... Physica E 38 (2007) 27–30 Flower- like silicon nanostructures Zhihong Liua, Jia Shaa,b, Qing Yanga, Zixue Sua,b, Hui Zhanga, Deren Yanga,ÃaState Key Laboratory of Silicon Materials, Zhejiang ... ﬂower -like silicon nanostructure grown by combining the oxidation-assisted growth (OAG) mechanism andthe vapor–liquid–solid (VLS) growth mechanism. It is found that the ﬂower -like silicon nanostructures ... reserved.PACS: 68.65.Àk; 78.20.Nv; 78.67.ÀnKeywords: Silicon; Flower- like; Photothermal; Nanowires1. IntroductionDuring recent years, silicon nanostructures have attractedmuch attention due to...

effects of flower - like, sheet - like and granular sno2 nanostructures

... intensity)NaBr400 Pale Flower- like 16.78 71.5 45 19.18 0NaBr600 White Flower- like 20.52 9.88 25 34.53 0NaCl400 Gray Sheet -like 19.26 7.46 34.6 24.95 1/3NaCl600 Pale Sheet -like 25.72 17.7 14.09 ... Physicsjournal homepage: www.elsevier.com/locate/matchemphysEffects of ﬂower -like, sheet -like and granular SnO2 nanostructures prepared by solid-state reactions on CO sensingAzam Anaraki Firooza, ... 17 November 2008Keywords:SEMXRDSemiconductor Nanostructures abstractNanostructured SnO2with different morphologies of ﬂower -like, sheet -like and granular have been suc-cessfully prepared...

Effects of simultaneous doping with boron and phosphorous on the structural, electronic and optical properties of silicon nanostructures

... of silicon nanostructures. & 2008 Elsevier B.V. All rights reserved.1. Introduction and computational methodsDuring the last decade, several breakthroughs have boostedthe hopes that silicon ... transitions near the band edge are moreintense.5. Codoped silicon nanowiresAmong one-dimensional semiconducting nanostructures, silicon nanowires (Si-nw) have attracted in the last years anincreasing ... emission of light of silicon nanocrystals can be achieved.We have considered impur ities, boron and phosphorous (codoping), located at different substitutionalsites of silicon nanocrystals...

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Phonon assisted tunneling process in amorphous silicon nanostructures and gaas nanowires

... Physica E 40 (2008) 2859–2861Phonon-assisted tunneling process in amorphous silicon nanostructures and GaAs nanowiresP. OhlckersÃ, P. PipinysVestfold University College, Raveien ... explanat ion of the tempera-ture peculiarities of the I–V characteristics in the amor-phous silicon nanostructures and GaAs nanowires recentlypublished in Refs. [1,9].2. Theory and a comparison ... Elsevier B.V. All rights reserved.PACS: 73.21.Hb; 78.67.Lt; 72.20.Jv; 73.40.GkKeywords: Si; GaAs nanostructures; Electron transport; Phonon-assisted tunneling1. IntroductionCurrent densit y–voltage...

(2002)Silicon nanostructures for photonics

... atstacks.iop.org/JPhysCM/14/8253AbstractNanostructuring silicon is an effective way to turn silicon into a photonicmaterial. In fact, low-dimensional silicon shows light ampliﬁcationcharacteristics, ... electrical properties of the electrolyte /silicon junction, which is very different for p- andn-type-doped silicon [107, 108] (ﬁgure 15). In p-type-doped silicon the junction is forwardbiased. ... kinds of lattice can be obtained from a similar lithographic Silicon nanostructures for photonics 8273Figure 16. Voltammetry of an n-type silicon sample in 0.5 M HF. Scan rate: 50 mV s−1.Figure...

Growth of silicon nanostructures on graphite

... (1993) 15835.(1993) 42.Surface Science 458 (2000) 113–122www.elsevier.nl/locate/suscGrowth of silicon nanostructures on graphitePaul Scheier 1, Bjo¨rn Marsen, Manuel Lonfat, Wolf-Dieter Schneider ... HI 96822, USAReceived 23 November 1999; accepted for publication 14 February 2000Abstract Silicon nanostructures such as small clusters, superclusters, and elongated chains, with an average ... i.e. deposition of silicon atoms onto a surfacewith built-in defects, and subsequent surface diﬀusion and aggregation of the adatoms, convincingly reproduces mostof the Si nanostructures observed...

low temperature hydrothermal synthesis of monodispersed flower - like titanate nanosheets

... Flower- like TiO2 (calcined 500 oC)(c) Flower- like titanateFig. 6. Photocatalytic H2evolution from water splitting reaction over (a) ST-01(anatase powder), (b) AS, (c) as-prepared flower -like ... flower -like titanate, and (d) flower -like titanate calcined at 500 °C.01002003004005006007000 50 100 150 200 250 300Irradiation time / minH2 evolved / μmol g-1(a) ST01(b) AS(d) Flower- like ... 2008Available online 2 October 2008Keywords:Titania Flower- like SphereNanosheetsTemplate-freeHydrothermalabstractMonodispersed flower -like titanate superstructure was successfully prepared...

A wurtz like reaction to silicon nanowires

... December 2007Available online 23 December 2007Abstract Silicon nanowires have been successfully synthesized via wurtz -like reaction, using silicon tetrachloride and sodium in the presence of Co/Nicatalyzer ... tothe (111) lattice parameter of diamond -like crystalline silicon. Based on the experimental results, the possible wurtz reaction mechanism of the silicon nanowires (SiNWs) has been properly ... been properly proposed.© 2008 Elsevier B.V. All rights reserved.Keywords: Silicon tetrachloride; Wurtz -like reaction; Silicon nanowires; Crystal growth; Crystal structure1. IntroductionWurtz...

Temperature-Controlled Growth of Silicon-Based Nanostructures by Thermal Evaporation of SiO Powders

... of 5% H2-Ar at a flow rate of 50 sccm. Silicon- based nanostructures with morphologies such as octopuslike, pinlike,tadpolelike, chainlike, and wirelike were formed in differenttemperature ... show that, besides Sinanowires, many other kinds of Si-based nanostructures suchas octopuslike, pinlike, tadpolelike, and chainlike structures werealso formed at different temperature zones. ... the octopuslike structure shown in (a). (c) TEMimage of the pinlike structure. TEM images of the Si nanowire withuniform Si core (d) and bulblike Si core (e).Growth of Silicon- Based Nanostructures...

One dimensional organic nanostructures a novel approach based on the selective adsorption of organic molecules on silicon nanowires

... Surface Science LettersOne-dimensional organic nanostructures: A novel approach based on theselective adsorption of organic molecules on silicon nanowiresEric Salomon*, Antoine KahnDepartment ... (STM) is used to investigate the formation of one-dimensional organic nanostructures by chemisorption of speciﬁc molecules on silicon nanowires. STM data demonstrate thatdepending on the molecular ... regard, it has been recently dem-onstrated that 16 Å wide silicon nanowires (NWs), heretofore re-ferred to as SiNWs, can be grown by adsorbing silicon atomsonto a single crystal of silver oriented...

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