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Korean Journal of Metals and Materials > Volume 55(4); 2017 > Article
Korean Journal of Metals and Materials 2017;55(4): 255-263. doi: https://doi.org/10.3365/KJMM.2017.55.4.255
마이크로파 화학 용액 증착법을 이용하여 성장시킨 ZnO 나노로드의 형태학적, 구조적, 광학적 그리고 광전기화학적 특성 변화 연구
오성진1, 류혁현1, 이원재2
1인제대학교 나노융합공학과
2동의대학교 융합부품공학과
Study of the Morphological, Structural, Optical and Photoelectrochemical Properties of Zinc Oxide Nanorods Grown Using a Microwave Chemical Bath Deposition Method
Sungjin Oh1, Hyukhyun Ryu1, Won-Jae Lee2
1Department of Nanoscience and Engineering, High Safety Vehicle Core Technology Research Center, Inje University, Gimhae 50834, Republic of Korea
2Department of Materials and Components Engineering, Dong-Eui University, Busan 47340, Republic of Korea
Correspondence  Hyukhyun Ryu ,Tel: -55-320-3874, Email: hhryu@inje.ac.kr
Received: 21 April 2016;  Accepted: 22 July 2016.  Published online: 6 April 2017.
ABSTRACT
In this study, zinc oxide (ZnO) nanostructures were grown on a ZnO-buffered fluorine-doped tin oxide (FTO) substrate using a microwave chemical bath deposition method with different zinc oxide precursor concentrations from 0.01 to 0.5 M. We investigated the effects of the zinc oxide precursor concentration on the morphological, structural, optical and photoelectrochemical properties of the ZnO nanostructures. From this work, we found that ZnO one-dimensional structures mainly grew along the (002) plane, and the nanorod length, diameter, surface area and photoelectrochemical properties were largely dependent on the precursor concentration. That is, the photoelectrochemical properties were affected by the morphological and structural properties of the ZnO. The morphological, structural, optical and photoelectrochemical properties of the ZnO nanostructure were investigated by field emission scanning electron microscopy (FE-SEM) and atomic force microscope (AFM), X-ray diffraction (XRD), UV-visible spectroscopy and 3-electrode potentiostat. We obtained the highest photocurrent density of 0.37 mA/cm2 (at 1.1 V vs. SCE) from the precursor concentration of 0.07 M, which resulted in ZnO nanostructures with proper length and diameter, large surface area and good structural properties.
Keywords: ZnO nanorods, microwave chemical bath deposition, photoelectrochemical, photocurrent density, precursor concentration
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