Low cost, portable, fast multiparameter data acquisition system for organic transistor odour sensors

被引：25

作者：

Das, A. ^{[1
]}

Dost, R. ^{[1
]}

Richardson, T. H. ^{[1
]}

Grell, M. ^{[1
]}

Wedge, D. C. ^{[2
]}

Kell, D. B. ^{[2
]}

Morrison, J. J. ^{[3
]}

Turner, M. L. ^{[3
]}

机构：

[1] Univ Sheffield, Sheffield S3 7RH, S Yorkshire, England

[2] Manchester Interdisciplinary Bioctr, Manchester M1 7DN, Lancs, England

[3] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 137卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

Organic field effect transistor; Amorphous polymer; Multiparameter sensor; Fast and automated data acquisition; Chemical sensor; GAS SENSORS; BETA;

D O I：

10.1016/j.snb.2009.01.006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We demonstrate a cost-effective but fast multiparameter data acquisition system for odour sensors based on low threshold organic field effect transistors (OFETs) with an amorphous methoxy-derivative of poly(triaryl amine) (PTA-OMe) as semiconductor. The system applies a simple algorithm to measure OFET saturated transfer characteristics with a tailored operational amplifier circuit that is interfaced to a laptop that controls the circuit and analyses data with bespoke software. Despite the semiconductor's low charge carrier mobility mu similar to 5 x 10(-5) Vs/cm(2), the system returns multiparameter OFET data: OFET source-drain current I-SD in both the 'on' and 'off' state, carrier mobility mu, and threshold (V-T), in real time (resolution <1 s). The system is tested by exposing the OFET to a series of alcohol odours at different concentrations. Sensor response is quick, and follows a distinct trend IPA > PrOH > EtCH > MeOH. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：586 / 591

页数：6

共 19 条

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