Ammonia-Sensing Using a Composite of Graphene Oxide and Conducting Polymer

被引：36

作者：

Hasani, Amirhossein ^{[1
]}

Dehsari, Hamed Sharifi ^{[2
]}

Lafmejani, Milad Asghari ^{[3
]}

Salehi, Alireza ^{[3
]}

Taromi, Faramarz Afshar ^{[4
]}

Asadi, Kamal ^{[2
]}

Kim, Soo Young ^{[1
]}

机构：

[1] Chung Ang Univ, Sch Chem Engn & Mat Sci, 84 Heukseok Ro, Seoul 06974, South Korea

[2] Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany

[3] KN Toosi Univ Technol, Dept Elect Engn, Tehran 163151355, Iran

[4] Amirkabir Univ Technol, Dept Polymer Engn & Color Technol, POB 15875-4413, Tehran, Iran

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2018年 / 12卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

ammonia sensors; GaAs; graphene oxide; PEDOT:PSS; Schottky diodes; LITHIUM-ION BATTERIES; HOLE TRANSPORT LAYER; SCHAFER THIN-FILMS; GAS SENSORS; PERFORMANCE; HETEROJUNCTION; NANOCOMPOSITE; PEDOTPSS; CARBON; POLY(3,4-ETHYLENEDIOXYTHIOPHENE)-POLY(STYRENESULFONATE);

D O I：

10.1002/pssr.201800037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper studies the performance of a gas sensor based on an organic/inorganic diode for ammonia (NH3) sensing under atmospheric conditions at room temperature and different humidity levels. The diode structure consists of a layer of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) deposited on top of n-type GaAs. The PEDOT:PSS layer that is filled with different ratios of graphene oxide (GO) is prepared from the solution phase. We show that the current-voltage (I-V) response of the diode and the sensing performance improve significantly by adding GO to the PEDOT:PSS layer. The sensing response is highest for a diode with 0.04wt.% of GO. At room temperature, the PEDOT:PSS:GO (0.04wt.%)/n-GaAs Schottky diode shows a sensitivity of 194 upon exposure to 20ppm of NH3 with rapid response and recovery times between 95 and 121s, respectively. The NH3 sensor based on PEDOT:PSS:GO is cost-effective, environmentally friendly, and easy to fabricate using low-cost solution-processing methods.

引用

页数：7