A surfactant dispersed N-doped carbon sphere-poly(vinyl alcohol) composite as relative humidity sensor

被引：18

作者：

Cunha, Bruno B. ^{[1
]}

Greenshields, Marcia W. C. C. ^{[1
]}

Mamo, Messai A. ^{[2
]}

Coville, Neil J. ^{[3
]}

Huemmelgen, Ivo A. ^{[1
]}

机构：

[1] Univ Fed Parana, Dept Fis, BR-81531990 Curitiba, Parana, Brazil

[2] Univ Johannesburg, Dept Appl Chem, ZA-2028 Doornfontein, South Africa

[3] Univ Witwatersrand, Inst Mol Sci, Sch Chem, DST NRF Ctr Excellence Strong Mat, ZA-2050 Johannesburg, South Africa

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2015年 / 26卷 / 06期

关键词：

Polyvinyl alcohols - Carbon - Integrodifferential equations - Doping (additives);

D O I：

10.1007/s10854-015-2966-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report on the use of a composite of N-doped carbon spheres dispersed with hexadecyltrimethylammonium bromide in poly(vinyl alcohol) as an active material for thin film relative humidity (RH) sensors prepared on interdigitated electrodes (IDEs) with gaps of 0.1 or 0.3 mm. The sensors respond to RH variations in the range 9-97 RH % presenting sensitivity (relative variation of conductance per RH variation) up to 1.7 x 10(3) (IDE with gap of 0.1 mm) and 8.7 x 10(2) (IDE with gap of 0.3 mm). The response times were 19 and 8 s, and the recovery times were 178 and 142 s, respectively.

引用

页码：4198 / 4201

页数：4

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