Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application

Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application

Highly c-axis oriented Al and Fe co-doped ZnO (ZAF) thin film is prepared by pulsed laser deposition. Fe introduces redox centre along with shallow donor level while Al doping enhances conductivity of ZnO, thus removing the requirement of both mediator and bottom conducting layer in bioelectrode. M...

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Main Authors: Shibu Saha, Vinay Gupta
Format: Article
Language:English
Published: AIP Publishing LLC 2011-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3654497
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spelling doaj-305d73fce624402aac91b98e7b5abf242020-11-24T22:22:37ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114042112042112-610.1063/1.3654497012104ADVAl and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing applicationShibu Saha0Vinay Gupta1Department of Physics & Astrophysics, University of Delhi, Delhi-110007, IndiaDepartment of Physics & Astrophysics, University of Delhi, Delhi-110007, India Highly c-axis oriented Al and Fe co-doped ZnO (ZAF) thin film is prepared by pulsed laser deposition. Fe introduces redox centre along with shallow donor level while Al doping enhances conductivity of ZnO, thus removing the requirement of both mediator and bottom conducting layer in bioelectrode. Model enzyme (glucose oxidase), was immobilized on surface of ZAF matrix. Cyclic voltammetry and photometric assay show that prepared bio-electrode is sensitive to glucose concentration with enhanced response of 0.18 μAmM-1cm-2 and low Km ∼ 2.01 mM. The results illustrate that ZAF is an attractive matrix for realization of miniaturized mediator-less solid state biosensor. http://dx.doi.org/10.1063/1.3654497
collection DOAJ
language English
format Article
sources DOAJ
author Shibu Saha
Vinay Gupta
spellingShingle Shibu Saha
Vinay Gupta
Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
AIP Advances
author_facet Shibu Saha
Vinay Gupta
author_sort Shibu Saha
title Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
title_short Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
title_full Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
title_fullStr Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
title_full_unstemmed Al and Fe co-doped transparent conducting ZnO thin film for mediator-less biosensing application
title_sort al and fe co-doped transparent conducting zno thin film for mediator-less biosensing application
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2011-12-01
description Highly c-axis oriented Al and Fe co-doped ZnO (ZAF) thin film is prepared by pulsed laser deposition. Fe introduces redox centre along with shallow donor level while Al doping enhances conductivity of ZnO, thus removing the requirement of both mediator and bottom conducting layer in bioelectrode. Model enzyme (glucose oxidase), was immobilized on surface of ZAF matrix. Cyclic voltammetry and photometric assay show that prepared bio-electrode is sensitive to glucose concentration with enhanced response of 0.18 μAmM-1cm-2 and low Km ∼ 2.01 mM. The results illustrate that ZAF is an attractive matrix for realization of miniaturized mediator-less solid state biosensor.
url http://dx.doi.org/10.1063/1.3654497
work_keys_str_mv AT shibusaha alandfecodopedtransparentconductingznothinfilmformediatorlessbiosensingapplication
AT vinaygupta alandfecodopedtransparentconductingznothinfilmformediatorlessbiosensingapplication
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