A sensor circuit using reference-based conductance switching in organic electrochemical transistors

被引：28

作者：

Svensson, Per-Olof ^{[1
]}

Nilsson, David ^{[2
]}

Forchheimer, Robert ^{[3
]}

Berggren, Magnus ^{[1
]}

机构：

[1] Linkoping Univ, ITN, SE-60174 Norrkoping, Sweden

[2] Printed Elect, Acreo AB, SE-60221 Norrkoping, Sweden

[3] Linkoping Univ, ISY, SE-58183 Linkoping, Sweden

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 20期

关键词：

electrochemical sensors; electrolytes; organic semiconductors; transistors;

D O I：

10.1063/1.2975377

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using organic electrochemical transistors as sensors, the sample-receptor reaction often induces moderate changes only in the drain current dynamics as the gate voltage level is switched. Here, we report an electrochemical sensor circuit including electrochemical transistors based on poly(3,4-ethylenedioxythiophene) doped with polystyrenesulfonate that puts out a static sensor response signal. The circuit includes a sample and a reference transistor that are both driven in the resistive mode at 0.1 V. Measurements were performed on aqueous salt electrolytes ranging from 100 to 500 mM concentrations. The signal-ON sensor circuit provides a tenfold increase in the sensitivity as compared to single transistor sensors.

引用

页数：3

共 17 条

[1] MICROELECTROCHEMICAL TRANSISTORS BASED ON ELECTROSTATIC BINDING OF ELECTROACTIVE METAL-COMPLEXES IN PROTONATED POLY(4-VINYLPYRIDINE) - DEVICES THAT RESPOND TO 2 CHEMICAL STIMULI [J].