Synthesis and fast-response of a photodetector of hydrothermally grown ZnO nanorods through the use of a graphene oxide/ZnO seed layer

RSC Advances ◽  
2015 ◽  
Vol 5 (114) ◽  
pp. 94222-94226 ◽  
Author(s):  
Giwoong Nam ◽  
Jae-Young Leem
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Seed Layer ◽  
Zno Nanorods ◽  
Fast Response ◽  
Zno Nanorod ◽  
Uv Detector

We used a hydrothermal method combined with a graphene oxide (GO)/ZnO seed layer to fabricate a ZnO nanorod based fast-response UV detector.

Morphology controlled growth of ZnAl-layered double hydroxide and ZnO nanorod hybrid nanostructures by solution method

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 59823-59829 ◽  
Author(s):  
Seong-Ho Baek ◽  
Gwang-Hee Nam ◽  
Il-Kyu Park
Keyword(s):  
Hydrothermal Method ◽  
Layered Double Hydroxide ◽  
Seed Layer ◽  
Solution Method ◽  
Morphological Evolution ◽  
Zno Nanorods ◽  
Hybrid Nanostructures ◽  
Controlled Growth ◽  
Zno Nanorod ◽  
Double Hydroxide

Morphological evolution of ZnAl-based hybrid nanostructures from ZnAl layered double hydroxide to ZnO nanorods grown by a hydrothermal method depending on the thickness of the Al2O3/ZnO double seed layer.

scholarly journals Controlling the hydrothermal growth and the properties of ZnO nanorod arrays by pre-treating the seed layer

RSC Advances ◽  
2014 ◽  
Vol 4 (84) ◽  
pp. 44452-44456 ◽  
Author(s):  
Y. Yin ◽  
Y. Sun ◽  
M. Yu ◽  
X. Liu ◽  
B. Yang ◽  
...  
Keyword(s):  
Seed Layer ◽  
Zno Nanorods ◽  
Hydrothermal Growth ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

Annealing or plasma pre-treating the ZnO seed layer influences the nucleation and hydrothermal growth of ZnO nanorods and their photoluminescence.

scholarly journals Modulating the size of ZnO nanorods on SiO2 substrates by incorporating reduced graphene oxide into the seed layer solution

AIP Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 065110 ◽  
Author(s):  
Tzu-Yi Yu ◽  
Min Ruei Wei ◽  
Chen Yuan Weng ◽  
Wei Ming Su ◽  
Chien Cheng Lu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Seed Layer ◽  
Zno Nanorods ◽  
Reduced Graphene ◽  
Layer Solution

The effect of seed layer on morphology of ZnO nanorod arrays grown by hydrothermal method

2010 ◽  
Vol 489 (1) ◽  
pp. 99-102 ◽  
Author(s):  
Yinglei Tao ◽  
Ming Fu ◽  
Ailun Zhao ◽  
Dawei He ◽  
Yongsheng Wang
Keyword(s):  
Hydrothermal Method ◽  
Seed Layer ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

Fabrication and characterization of a single-bridge nanorod between microgap electrodes

2014 ◽  
Vol 31 (2) ◽  
pp. 104-107 ◽  
Author(s):  
Qazi Humayun ◽  
Muhammad Kashif ◽  
Uda Hashim
Keyword(s):  
Zinc Acetate Dihydrate ◽  
Zno Nanorods ◽  
Hydrothermal Process ◽  
Zinc Nitrate ◽  
Wet Etching ◽  
Nitrate Hexahydrate ◽  
Zno Nanorod ◽  
Uv Detector ◽  
Etching Technique ◽  
Content Type

Purpose – The purpose of this study was to investigate the performance of a single-bridge ZnO nanorod as a photodetector. Design/methodology/approach – The fabrication of the design sensor with ∼6-μm gap Schottky contacts and bridging of the ZnO nanorod were based on conventional photolithography and wet-etching technique. Prior to bridging, the ZnO nanorods were grown by the hydrothermal process. The 0.35 M seed solution was prepared by dissolving zinc acetate dihydrate in 2-methoxyethanol, and monoethanolamine, which acts as a stabilizer, was added drop-wise. Before starting the solution deposition, and oxide, titanium (Ti) and gold (Au) layer deposition, p-type (100) silicon substrate was cleaned with Radio Corporation of America (RCA1) and RCA2, followed by dipping in diluted hydrofluoric acid. The aged solution was dropped onto the surface of the Au microgap structure, using a spin coater at a spinning speed of 3,000 rpm for 45 seconds, and then dried at 300°C for 15 minutes, followed by annealing at 400°C for 1 hour. The hydrothermal growth was carried out in an aqueous solution of zinc nitrate hexahydrate (0.025 M) and hexamethyltetramine (0.025 M). Findings – In this study, ZnO nanorods were grown on a SiO2 substrate by the hydrothermal method. Microgap electrodes with ∼6-μm spacing were achieved by using the wet-etching process. After the growth process, an area-selective mask was utilized to reduce the number of rods between the nearby gap areas. The obtained single ZnO nanorod was tested for the UV-sensing application. The single ZnO nanorod photodetector exhibited a UV photoresponse, thereby indicating potential as a cost-effective UV detector. The response and recovery times of the fabricated device were 65 and 95 seconds, respectively. Structural analysis was captured using X-ray Diffraction (XRD), whereas surface morphology was determined using scanning electron microscopy. Originality/value – This paper demonstrates the effect of UV photon on a single-bridge ZnO nanorod between microgap electrodes.

Phosphorus-Doped p-Type ZnO Nanorods and ZnO Nanorod p−n Homojunction LED Fabricated by Hydrothermal Method

2009 ◽  
Vol 113 (50) ◽  
pp. 21208-21212 ◽  
Author(s):  
Xuan Fang ◽  
Jinhua Li ◽  
Dongxu Zhao ◽  
Dezhen Shen ◽  
Binghui Li ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Zno Nanorods ◽  
Zno Nanorod ◽  
P Type ◽  
Phosphorus Doped

scholarly journals Growth of ZnO nanorods on different substrates using hydrothermal method

2020 ◽  
Vol 16 (2) ◽  
pp. 154-157
Author(s):  
Rina Dewi Mayasari ◽  
Aditya Eka Mulyono ◽  
Masmui Masmui ◽  
Wawas Swathatafrijiah ◽  
Agustanhakri Agustanhakri ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Seed Layer ◽  
Growth Parameters ◽  
Zno Nanorods ◽  
Vertical Direction ◽  
Hexagonal Wurtzite Structure ◽  
Average Diameter ◽  
Sio2 Film ◽  
Acetate Solution ◽  
Au Film

Zinc oxide (ZnO) nanorods have been grown on different substrates, i.e. gold film-coated BK-7 glass (Au-film/BK7), microscope glass slide (MGS), silicon oxide film-coated silicon (SiO2-film/Si), to investigate the effects of different substrates on its material properties. The growth process was started by dipping substrates in zinc acetate solution to fabricate a seed layer, followed by growing the ZnO nanorods in zinc nitrate tetrahydrate solution based on hydrothermal method at 95 °C for 6 hour. In this process, seed layer and ZnO nanorods were annealed at 350 °C for 2 hours. The characterization results using X-ray diffraction and field effect scanning electron microscope showed that ZnO nanorods were successfully grown homogenously and mostly in vertical direction with hexagonal wurtzite structure. The diameter size of ZnO nanorods was significantly influenced by the type of material substrate. ZnO nanorods on Au-film/BK-7 glass have the smallest diameter size of (239±51) nm, while the average diameter size of ZnO nanorods on MGS is of (269±53) nm and ZnO nanorods on SiO2-film/Si have the largest diameter size of (354±80) nm. The effect of substrates on different size of ZnO nanorods may be regarded to the intrinsic thermal conductivity of substrate material. Hence, the synthesis and growth parameters for the different substrates differ from each other and need to be optimized in order to grow ZnO nanostructures

scholarly journals Enhanced Antibacterial Activity of Ag Nanoparticle-Decorated ZnO Nanorod Arrays

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Jian Shang ◽  
Ye Sun ◽  
Teng Zhang ◽  
Zhen Liu ◽  
Hong Zhang
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Ag Nanoparticles ◽  
Seed Layer ◽  
Zno Nanorods ◽  
Antibacterial Properties ◽  
Orthopedic Implants ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Ag Nanoparticle

Silver (Ag) has broad-spectrum antibacterial properties and is widely used in various fields, including in antibacterial coatings for orthopedic implants. For reasons of cost and cytotoxicity, improvement of the antibacterial efficiency of Ag is necessary. The scientific community has also shown a strong enthusiasm in this research area. In this paper, ZnO nanorod arrays were prepared on a titanium (Ti) substrate by seed-assisted hydrothermal method and Ag nanoparticles were deposited by magnetron sputtering to obtain Ag nanoparticle-decorated ZnO nanorod arrays (ZnO nanorods/Ag nanoparticles). The antibacterial properties of ZnO nanorods/Ag nanoparticles against Pseudomonas aeruginosa were systematically studied by agar diffusion method and were compared with other samples such as ZnO nanorod arrays and ZnO seed layer/Ag nanoparticles. The experimental results showed that ZnO nanorods/Ag nanoparticles displayed significantly higher antibacterial properties against Pseudomonas aeruginosa than other samples, including ZnO nanorod arrays and ZnO seed layer/Ag nanoparticles. These superior antibacterial properties originated predominantly from the morphological structure of ZnO nanorods, which optimized the particle size and distribution of Ag nanoparticles, greatly improving their antimicrobial efficiency. The synergistic antibacterial properties of Ag nanoparticles and ZnO nanorods make Ag nanoparticle-decorated ZnO nanorod arrays a promising candidate for antibacterial coating of orthopedic implants.

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