Enhancement of the NO2-sensing capability of copper phthalocyanine by measuring the relative resistance change

被引：22

作者：

Park, C ^{[1
]}

Yun, DH ^{[1
]}

Kim, ST ^{[1
]}

Park, YW ^{[1
]}

机构：

[1] SEOUL NATL UNIV,DEPT PHYS,SEOUL 151142,SOUTH KOREA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1996年 / 30卷 / 01期

关键词：

copper phthalocyanine; nitrogen dioxide sensors; relative resistance;

D O I：

10.1016/0925-4005(95)01727-D

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The gas-sensing properties of copper phthalocyanine (CuPc) thin films have been measured for NO2 concentrations of 1 to 10 parts per million (ppm). The CuPc films thermally evaporated on glass substrates appear to have an cy-form polycrystalline structure. Most measurements of gas sensitivity are done with heat-cleaned sensing elements to reduce the instability of CuPc resistance. We have established unambiguously that a significant enhancement of detectivity can be accomplished by converting the resistance to a normalized figure, i.e., the relative resistance. Good sensitivity to as low as 1 ppm has been reproducibly achieved.

引用

页码：23 / 27

页数：5

共 13 条

[1] A HIGHLY SENSITIVE NO2 SENSOR BASED ON ELECTRICAL-CONDUCTIVITY CHANGES IN PHTHALOCYANINE FILMS [J].