Effects of growth pressure on morphology of ZnO nanostructures by chemical vapor transport

被引：8

作者：

Babu, Eadi Sunil ^{[1
,2
]}

Kim, Sungjin ^{[2
]}

Song, Jung-Hoon ^{[3
]}

Hong, Soon-Ku ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Adv Mat Engn, Daejeon 305764, South Korea

[2] Kumoh Natl Inst Technol, Sch Adv Mat & Engn, T222,61 Daehak Ro, Gumi 39177, South Korea

[3] Kongju Natl Univ, Dept Phys, Kong Ju 32588, Chungnam, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2016年 / 658卷

基金：

新加坡国家研究基金会;

关键词：

Zinc oxide; Chemical vapor deposition; Supersaturation; Vapor phase nucleation; ZINC-OXIDE NANOSTRUCTURES;

D O I：

10.1016/j.cplett.2016.06.050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of growth pressure on the morphology of the ZnO nanostructures in chemical vapor transport by using Zn powder and oxygen as source materials has been investigated. Highly uniform aligned ZnO nanorods or multifaceted tripod structures were grown depending on the growth pressure. The mechanism governing the morphology change was explained by the relative concentration of Zn vapor and supersaturation based on experimental observations. It was concluded that heterogeneous nucleation on the substrate is enhanced at low growth pressure, while homogeneous nucleation from vapor phase is enhanced at high growth pressure. The difference resulted in different morphology of ZnO nanostructures. ZnO nanorods grown at optimized condition were used for the fabrication of gas sensor for the detection of H-2 gas. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：182 / 187

页数：6

共 33 条

[1] Ultrasensitive detection of cytokines enabled by nanoscale ZnO arrays [J].