Spectroscopic characterization of CVD grown zinc oxide nanowires

被引：19
作者：
Bhujel, Rabina [1 ]
Rai, Sadhna [1 ]
Swain, Bibhu P. [2 ]
机构：
[1] Sikkim Manipal Inst Technol, Ctr Mat Sci & Nanotechnol, Nanoproc Lab, Majitar 737136, Rangpo, India
[2] Natl Inst Technol Manipur, Dept Phys, Imphal 795004, Manipur, India
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2019年 / 102卷
关键词：
ZnO-NWs; FESEM; XRD; XPS; Phonon lifetime; SURFACE DANGLING BONDS; ZNO NANOWIRES; ARRAYS; PHOTOLUMINESCENCE; MORPHOLOGY; NANORODS; ALCOHOL; AG;
D O I：
10.1016/j.mssp.2019.104592
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Zinc oxide nanowires (ZnO-NWs) were deposited by oxidizing Zn powder and characterized by Field Emission Scanning Electron Microscopy (FESEM), photoluminescence, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques to evaluate its structural, vibrational, optical and chemical composition properties. The FESEM result shows that the length of the ZnO-NWs increases from 2.6 to 5.0 mu m respectively, for increasing the O-2 flow rate from 40 to 120 sccm with a fixed diameter of 175 nm. The crystallite size and lattice strain of ZnO-NWs are 26.96 nm and 0.00174 to 0.00408 respectively with increasing of O-2 flow rate. The deconvoluted photoluminescence spectra indicated four major visible emission band at 394.64, 420.96, 465.29, and 501.43 nm. The phonon lifetime of A1(TO) and E1(TO) decreased with increasing of O-2 flow rate. Moreover, the composition of Zn and O are 43 and 57 at. % respectively in the ZnO-NWs for the 100 sccm O-2 flow rate.
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页数：6
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