Photo induced NO2 sensing properties of bismuth triiodide (BiI3) nanoplates at room temperature

Herein we report on the growth of layered BiI3 nanoplates materials and their sensing properties of NO2 under violet light illumination. The BiI3 nanoplates were grown on a glass substrate using a chemical vapor deposition (CVD) system, with an average thickness of 30 nm and the lateral dimension of...

Full description

Saved in:
Bibliographic Details
Published in:Scripta materialia 2019-11, Vol.172, p.17-22
Main Authors: Hung, Pham Tien, Hien, Vu Xuan, Hoat, Phung Dinh, Lee, Sangwook, Lee, Joon-Hyung, Kim, Jeong-Joo, Heo, Young-Woo
Format: Article
Language:English
Subjects:
BiI3 nanoplates
Gas sensor
NO2
Photo-induced
Room temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Herein we report on the growth of layered BiI3 nanoplates materials and their sensing properties of NO2 under violet light illumination. The BiI3 nanoplates were grown on a glass substrate using a chemical vapor deposition (CVD) system, with an average thickness of 30 nm and the lateral dimension of 150–170 nm. Their photo-induced sensing response for 20 ppm NO2 and the response/recovery time are approximately ~11.2% and 18/36 s, respectively. The limit of detection (LOD) of NO2 for the BiI3 sensor is 25 ppb. A possible light-induced gas-sensing mechanism was proposed and investigated for the BiI3 nanoplate. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2019.07.001