Position-Selective Growth of WO3 Nanosheets for NH3 Gas Sensors

In this study, chemical vapor deposition of WO3 via graphene-catalyzed thermal transport is utilized to prepare position-selective WO3 micro/nanostructures. The effects of growth temperature and oxygen concentration on the structure, morphology, surface chemical states, and electrical properties are...

Full description

Saved in:
Bibliographic Details
Published in:Crystal growth & design 2023-05, Vol.23 (5), p.3447-3454
Main Authors: Megersa, Daba Deme, Cho, Hyeon Ho, Kim, Youngho, Gudena, Gutema Teshome, Lee, Jaeyeong, Bae, Jong Seong, Chae, Sudong, Yu, Hak Ki
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, chemical vapor deposition of WO3 via graphene-catalyzed thermal transport is utilized to prepare position-selective WO3 micro/nanostructures. The effects of growth temperature and oxygen concentration on the structure, morphology, surface chemical states, and electrical properties are studied. The growth temperature and oxygen concentration are found to alter the resulting morphology and electrical properties. The combined application of high temperature and high oxygen concentration results in porous WO3 nanosheets with active surfaces. The prepared nanosheets are utilized for room-temperature NH3 gas sensing, and they exhibit good sensitivity, response time, and recovery time.
ISSN:1528-7483
1528-7505
DOI:10.1021/acs.cgd.3c00005