NDLI: Selective hydrogen sensing by cobalt doped ZnO thin films: A study on carrier reversal conductivity

Content Provider	IEEE Xplore Digital Library
Author	Ghosh, A. Bannerjee, R. Majumder, S.B.
Copyright Year	2015
Description	Author affiliation: Electron. & Commun. Eng., S'O'A Univ., Bhubaneswar, India (Bannerjee, R.) \|\| Mater. Sci. Centre, Indian Inst. of Technol. Kharagpur, Kharagpur, India (Ghosh, A.; Majumder, S.B.)
Abstract	The n to p type carrier reversal conductivity is observed in cobalt doped zinc oxide (Co_ZnO) thin films with cobalt content from 0.001 to 0.5 wt% in hydrogen (H2) gas. Maximum response (220.6 %) and p-type conductivity is achieved in H2 gas at lower operating temperature (200oC) using 0.01 wt% Co_ZnO thin film where n-type conductivity is observed at higher operating temperatures which provide selective H2 sensing. The n and p type conductivity are observed at 250oC but the response (%) is less. Below 250oC it shows fully p-type conductivity in presence of H2 gas. By decreasing operating temperature, O2" molecular oxygen ions might be dominant to chemi-adsorb and creates OH" on sensor surface by reacting with H2 gas which increase the sensor resistance and shows p-type conductivity. The effect of interstitial defects and oxygen vacancies are also studied for n to p carrier reversal using photo luminescence spectra of undoped and Co_ZnO thin films.
Sponsorship	IEEE
Starting Page	1
Ending Page	4
File Size	1220060
Page Count	4
File Format	PDF
e-ISBN	9781479982035
DOI	10.1109/ICSENS.2015.7370358
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-01
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Zinc oxide II-VI semiconductor materials Conductivity Temperature sensors Cobalt Gas Sensing Thin films Carrier Reversal Cobalt Doping
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hydrogen Sensing Properties of Copper-Doped Zinc Oxide Thin Films

Sensitivity of nanostructured Al-doped ZnO-based CH4 sensor fabricated using sol-gel method

Synthesis and characterization of chemically deposited ZnO nanorods for NO2 gas sensing applications

Influence of annealing on Co-doped ZnO DMSs thin films synthesized by nanocluster-beam technique

Effect of indium concentration on optical and electrical properties of in doped ZnO thin films for gas sensing application

Sol - gel Ni doped ZnO films: Effect of annealing temperature

Al2O3 modified ZnO composite thick film for ethanol gas sensing

Sol-gel derived aluminum doped nanocrystalline zinc oxide for hydrogen gas sensing

Gas microsensors based on semiconductor thin films of ZnO:Ga

Selective hydrogen sensing by cobalt doped ZnO thin films: A study on carrier reversal conductivity

Similar Documents

Hydrogen Sensing Properties of Copper-Doped Zinc Oxide Thin Films

Sensitivity of nanostructured Al-doped ZnO-based CH4 sensor fabricated using sol-gel method

Synthesis and characterization of chemically deposited ZnO nanorods for NO2 gas sensing applications

Influence of annealing on Co-doped ZnO DMSs thin films synthesized by nanocluster-beam technique

Effect of indium concentration on optical and electrical properties of in doped ZnO thin films for gas sensing application

Sol - gel Ni doped ZnO films: Effect of annealing temperature

Al2O3 modified ZnO composite thick film for ethanol gas sensing

Sol-gel derived aluminum doped nanocrystalline zinc oxide for hydrogen gas sensing

Gas microsensors based on semiconductor thin films of ZnO:Ga

Selective hydrogen sensing by cobalt doped ZnO thin films: A study on carrier reversal conductivity