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

被引：6

作者：

Pham Tien Hung ^{[1
]}

Vu Xuan Hien ^{[2
]}

Phung Dinh Hoat ^{[1
]}

Lee, Sangwook ^{[1
]}

Lee, Joon-Hyung ^{[1
]}

Kim, Jeong-Joo ^{[1
]}

Heo, Young-Woo ^{[1
,3
]}

机构：

[1] Kyungpook Natl Univ, Sch Mat Sci & Engn, E8-215,80 Daehakro, Daegu 41566, South Korea

[2] Hanoi Univ Sci & Technol, Sch Engn Phys, 01 Dai Co Viet St, Hanoi, Vietnam

[3] Kyungpook Natl Univ, Adv Mat Res Inst, Daegu 41566, South Korea

来源：

SCRIPTA MATERIALIA | 2019年 / 172卷

基金：

新加坡国家研究基金会;

关键词：

BiI3; nanoplates; Gas sensor; Room temperature; NO2; Photo-induced; GAS SENSOR; NITROGEN-DIOXIDE; HYDROTHERMAL SYNTHESIS; AIR-POLLUTION; THIN-FILMS; TIO2; HETEROJUNCTION; NANOPARTICLES; SURFACE; LEVEL;

D O I：

10.1016/j.scriptamat.2019.07.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 similar to 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. (C) 2019 Published by Elsevier Ltd on behalf of Acta Materialia Inc.

引用

页码：17 / 22

页数：6

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