STUDY OF NANOSTRUCTURES OF ZINC OXIDE SYNTHESIZED BY LOW-TEMPERATURE HYDROTHERMAL METHOD

2018 ◽  
Vol 20 (4) ◽  
pp. 209-217
Author(s):  
S.S. Kurbanov ◽  
Sh.Z. Urolov ◽  
Z.Sh. Shaymardanov ◽  
R.R. Jalolov
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Emission Band ◽  
Free Exciton ◽  
Zno Nanorods ◽  
Growth Direction ◽  
Orange Emission ◽  
Yellow Orange ◽  
Violet Band ◽  
Vertically Aligned

Room temperature photoluminescence (PL) properties of vertically aligned and spindle-shaped, randomly oriented ZnO nanorods synthesized by using a low temperature hydrothermal method are studied. In air, the vertically aligned ZnO nanorods oriented mainly parallel to the luminescencerecording axis exhibited only one, very strong UV emission peak at 382 nm. This band is assigned to emission of free excitons. A new violet PL band near 400 nm arises with increasing angle between the nanorod growth direction and the luminescence-recording axis. The violet band also appears under UV illumination in vacuum and vanishes after exposure to air. The randomly oriented ZnO nanorods along with free exciton related PL band reveal a broad yellow-orange emission band around 590 nm. The violet band is attributed to Zn vacancy related defects or their complexes, while the yellow-orange emission band is ascribed to oxygen interstitial related defects.

Preparation of vertically aligned ZnO nanorods on AZO thin film by hydrothermal method

2017 ◽  
Vol 4 (5) ◽  
pp. 6200-6204 ◽  
Author(s):  
P. Khamkhom ◽  
M. Horprathum ◽  
S. Pokai ◽  
P. Eiamchai ◽  
S. Tuscharoen ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrothermal Method ◽  
Zno Nanorods ◽  
Azo Thin Film ◽  
Vertically Aligned

Low temperature wet chemical synthesis of good optical quality vertically aligned crystalline ZnO nanorods

2007 ◽  
Vol 18 (3) ◽  
pp. 035606 ◽  
Author(s):  
T Mahalingam ◽  
Kyung Moon Lee ◽  
Kyung Ho Park ◽  
Soonil Lee ◽  
Yeonghwan Ahn ◽  
...  
Keyword(s):  
Low Temperature ◽  
Chemical Synthesis ◽  
Zno Nanorods ◽  
Optical Quality ◽  
Wet Chemical Synthesis ◽  
Vertically Aligned ◽  
Wet Chemical ◽  
Good Optical Quality

scholarly journals Фотолюминесцентные свойства нанородов ZnO, синтезированных различными методами

2018 ◽  
Vol 52 (7) ◽  
pp. 757
Author(s):  
С.С. Курбанов ◽  
Ш.З. Уролов ◽  
З.Ш. Шаймарданов ◽  
Х.Д. Чо ◽  
Т.В. Канг
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Vapor Phase ◽  
Zno Nanorods ◽  
Luminescence Spectra ◽  
Phase Method ◽  
Interstitial Oxygen ◽  
Chemical Reagents ◽  
Yellow Orange ◽  
High Temperature Vapor

AbstractThe photoluminescence properties of ZnO nanorods synthesized by the low-temperature hydrothermal and high-temperature vapor-phase methods are studied. At room temperature, the photoluminescence of ZnO nanorods synthesized by the high-temperature vapor-phase method exhibits only one highintensity ultraviolet peak at a wavelength of 382 nm. At the same time, the luminescence spectra of ZnO nanorod samples grown by the low-temperature hydrothermal method, but with the use of different chemical reagents exhibit, apart from the ultraviolet peak, a violet band or a yellow-orange band at ~401 and ~574 nm, respectively. The violet luminescence band is attributed to defects or zinc vacancy complexes, and the yellow-orange band to defects associated with interstitial oxygen.

Growth of ZnO nanorods via low temperature hydrothermal method and their application for Hydrogen production

2017 ◽  
Vol 4 (5) ◽  
pp. 6326-6330 ◽  
Author(s):  
Darinee Phromyothin ◽  
Poosuda Phatban ◽  
Sukittaya Jessadaluk ◽  
Narathon Khemasiri ◽  
Rattanachai Kowong ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Production ◽  
Hydrothermal Method ◽  
Zno Nanorods

Low-Temperature Synthesis of Nanocrystalline ZnO Nanorods Arrays

2013 ◽  
Vol 770 ◽  
pp. 237-240
Author(s):  
S. Kalasung ◽  
C. Chananonnawathorn ◽  
Mati Horprathum ◽  
P. Thongpanit ◽  
Pitak Eiamchai ◽  
...  
Keyword(s):  
Low Temperature ◽  
Zno Nanorods ◽  
Cost Effective ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
Thickness Change ◽  
Growth Method ◽  
Vertically Aligned ◽  
Seed Layer Thickness

In this present research, vertically aligned ZnO nanorods arrays were grown on silicon wafer (100) substrates from a zinc nitrate hexahydrate and hexamethylenetetramine solution by a cost effective and low temperature (90 °C) hydrothermal growth method. Field-emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) were used to analyze morphology, crystallinity and film thickness, respectively. It was demonstrated that when the seed layer thickness change from 18 to 200 nm, the nanowire density increased. Our result presented a scalable method for fabricating ZnO nanorods arrays with potential for a lots of application such as micro/nanosensors and the nanoelectronic devices.

Growth of vertically aligned ZnO nanorods on various substrates by hydrothermal method

2010 ◽  
Author(s):  
P. M. Aneesh ◽  
P. P. Subha ◽  
L. S. Vikas ◽  
Sonima Mohan ◽  
M. K. Jayaraj
Keyword(s):  
Hydrothermal Method ◽  
Zno Nanorods ◽  
Vertically Aligned
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