Two-step evaporation process for formation of aligned zinc oxide nanowires

Park, Joodong; Choi, Han-Ho; Siebein, Kerry; Singh, Rajiv K.

doi:10.1016/s0022-0248(03)01549-5

Cited by 68 publications

(29 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, ZnO nanorods with a wide band gap (3.37 eV) are regarded as promising candidate for using as functional units in nanodevices including UV and laser diodes, optical switches, surface acoustic devices, gas sensors, and solar cells [4][5][6][7][8][9]. In the past few years, various synthesis mechanism such as vapor-liquid-solid (VLS), vapor-solid (VS) and solution based growth have been developed for fabrication of ZnO nanorods [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

The role of reactants and droplet interfaces on nucleation and growth of ZnO nanorods synthesized by vapor–liquid–solid (VLS) mechanism

Hejazi

Hosseini

Ghamsari³

2008

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

The role of reactants and droplet interfaces on nucleation and growth of ZnO nanorods synthesized by vapor–liquid–solid (VLS) mechanism

Hejazi

Hosseini

Ghamsari³

2008

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…[17][18][19] Therefore, there has also been significant research into the growth and properties of ZnO nano/microstructures of wires, tubes, belts, and rods. [20,21] The synthesis of nano/microstructures of ZnO has been carried out using various methods, such as evaporation and condensation, [22][23][24][25] physical vapor deposition, [26][27][28] chemical vapor deposition, [29,30] and solvothermal [31] and hydrothermal methods. [32][33][34][35][36] Among them, the hydrothermal method is one of the most attractive candidates for industrial use because industrial processes generally require rapid, low-cost techniques, which are the advantages of the hydrothermal method.…”

mentioning

confidence: 99%

Hydrothermal Growth of Periodic, Single‐Crystal ZnO Microrods and Microtunnels

2006

View full text Add to dashboard Cite

Controlled and extended growth of micro-and nanostructured material systems is becoming increasingly important because of the ever-decreasing dimensions of a variety of devices, including those used for chemical and biological sensing and diagnosis, catalysis, energy conversion and storage, lightemitting displays, and optical storage. There is also significant academic interest in these systems because their properties can be remarkably improved over those of the bulk material due to quantum-sized effects. Beginning with the preparation of oriented carbon nanotubes, [1,2] there has been a dramatic increase in the volume of research into tubular and rodlike nano-and microscale structures for a variety of materials, such as In 1-x Ga x P [3] and MnOOH [4] Zinc oxide has been considered as the most promising candidate material for a wide variety of applications, such as room-temperature UV lasing, [10] transparent conduction electrodes, [11] surface-acoustic-wave devices, [12] and gas sensors, [13,14] because of its unique properties of a wide bandgap (E g = 3.37 eV) [15] with a large exciton binding energy (60 meV) and a large piezoelectric constant.[16] Recent progress in processing and properties of ZnO has been reviewed. [17][18][19] Therefore, there has also been significant research into the growth and properties of ZnO nano/microstructures of wires, tubes, belts, and rods. [20,21] The synthesis of nano/microstructures of ZnO has been carried out using various methods, such as evaporation and condensation, [22][23][24][25] physical vapor deposition, [26][27][28] chemical vapor deposition, [29,30] and solvothermal [31] and hydrothermal methods. [32][33][34][35][36] Among them, the hydrothermal method is one of the most attractive candidates for industrial use because industrial processes generally require rapid, low-cost techniques, which are the advantages of the hydrothermal method. The morphology of ZnO crystals can be controlled by varying growth conditions such as pH, [37] temperature, [38] and adsorbing molecules. [32,39] Nano/micrometer-scale ZnO structures that only have out-of-plane orientation without in-plane orientation with a substrate have been successfully grown.[ [40][41][42] However, the direct fabrication of periodic arrays of nano/micrometer-scale ZnO morphologies as single crystals with inplane and out-of plane epitaxial relations with a substrate have not been achieved yet.It is common to use photolithographic techniques to fabricate patterned periodic arrays of micrometer to sub-micrometer scale features of interesting materials on a substrate. A novel technique called "channel stamping" has also been developed as a soft lithographic alternative to photolithography, where either a metallo-organic precursor solution or a polymer solution is stamped from the channels of a polydimethylsiloxane (PDMS) stamp. Channel stamping has been used to produce micrometer and sub-micrometer scale features. [43,44] Several years ago, Andeen et al. [45] demonstrated that epitaxial ZnO films could be grown ...

show abstract

“…Furthermore, Ji et al and Dai et al have reported that if the concentration of the oxygen vacancies and interstitial oxygen ions is reduced in the synthesized products, a sharp and strong intensity NBE, and a short or suppressed green emission appear [40]. Therefore, the intensity ratio of UV to green emission is larger for the NWs in our study than those obtained from ZnO nanocrystals grown by hydrothermal [41], vapor-liquid-solid [42], CVD [43], chemical vapor transport and condensation [44], and electrochemical methods [45], suggesting that the ZnO NWs prepared in our work are good in crystallinity with very less structural defects. …”

Section: Characterizationmentioning

confidence: 53%

CATALYST–FREE GROWTH OF WELL–ALIGNED ZnO NANOWIRES ON GRAPHENE/Si SUBSTRATEBY THERMAL EVAPORATION

Khai¹

2018

JST

View full text Add to dashboard Cite

Vertically well-aligned ZnO nanowire (NW) arrays with high density were directly synthesized on graphene/Si substrate by thermal evaporation of zinc powder without catalysts or additives. The ZnO NWs were characterized by field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), photoluminescence (PL), and Raman spectroscopy. The results showed that the obtained ZnO NWs have diameters in the range of 300-350 nm with lengths of several tens micrometers. The prepared ZnO NWs are of a single crystal, which have a hexagonal wurtzite crystal structure with c-axis (002) orientation growth perpendicular to the substrate surface. The NW arrays had a good crystal quality with excellent optical properties, indicating a sharp and strong ultraviolet emission at 380 nm, and a weak visible emission at around 516 nm.

show abstract

Two-step evaporation process for formation of aligned zinc oxide nanowires

Cited by 68 publications

References 17 publications

The role of reactants and droplet interfaces on nucleation and growth of ZnO nanorods synthesized by vapor–liquid–solid (VLS) mechanism

The role of reactants and droplet interfaces on nucleation and growth of ZnO nanorods synthesized by vapor–liquid–solid (VLS) mechanism

Hydrothermal Growth of Periodic, Single‐Crystal ZnO Microrods and Microtunnels

CATALYST–FREE GROWTH OF WELL–ALIGNED ZnO NANOWIRES ON GRAPHENE/Si SUBSTRATEBY THERMAL EVAPORATION

Contact Info

Product

Resources

About