Gas sensing property of ZnO under visible light irradiation at room temperature - Details

author：

Geng, Q. (Geng, Q..) ^[1] | He, Z. (He, Z..) ^[2] | Chen, X. (Chen, X..) ^[3] | Dai, W. (Dai, W..) ^[4] | Wang, X. (Wang, X..) ^[5]

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Scopus

Abstract：

The　photo-responded　behavior　of　ZnO　and　its　sensing　response　to　ethylene　or　acetone　under　visible-light　irradiation　at　room　temperature　were　reported.　A　ZnO　sensor　without　any　response　to　target　gas　in　the　air　atmosphere　in　dark　at　room　temperature,　exhibits　not　only　a　photo　response　but　also　an　obvious　sensing　response　to　target　gas　in　the　air　atmosphere　under　visible-light　irradiation.　It　is　suggested　that　the　non-intrinsic　photo-absorption　induced　by　the　native　defects　of　ZnO　(i.e.,　the　two-photon　or　multi-photon　excitation　process　via　the　intraband)　may　be　responsible　for　the　photo-responded　behavior　to　the　visible　light.　Moreover,　a　mechanism　model　that　accounts　for　the　solid-state　process　of　photo-carrier　generation/recombination　is　proposed　to　explain　the　photo-induced　gas　sensing　response　of　ZnO　under　visible-light　irradiation.　This　indicates　that　the　photo-activated　gas　sensing　response　property　of　semi-conductor　can　be　also　caused　by　its　non-intrinsic　photo-absorption.　©　2013　Elsevier　B.V.

Keyword：

Acetone; Ethylene; Non-intrinsic absorption; Visible-light; ZnO

Community：

[ 1 ] [Geng, Q.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China
[ 2 ] [He, Z.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Chen, X.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Dai, W.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Wang, X.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

[Dai, W.]Research Institute of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, China

Email：

daiwenxin@fzu.edu.cn

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Source ：

Sensors and Actuators, B: Chemical

ISSN： 0925-4005

Year： 2013

Volume： 188

Page： 293-297

3 . 8 4

JCR@2013

6 . 3 9 3

JCR@2018

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 65

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

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