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Graphene oxide chemiresistive and semiconductor gas sensors for CO and VOC detection**

用于 CO 和 VOC 检测的氧化石墨烯化学电阻式和半导体气体传感器**

基本信息

批准号：
536346-2018
负责人：
Prakash, Ravi
金额：
$ 1.82万
依托单位：
Carleton University
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=662560
关键词：
Graphene oxide chemiresistive semiconductor gas

项目摘要

In this project, we will create functionalized Graphene-oxide membrane based interdigitated chemiresistive and semiconductor gas sensors. We will investigate new methods of 2D synthesis of graphene oxide films and membrane functionalization for selective gas detection at room temperature. To illustrate its commercial utility, we will conduct laboratory testing of the sensors alongside die encapsulation, and prototype packaging. ****The engineering design challenges include patterning thin film Graphene oxide on a custom interdigitated die. The graphene film needs to be chemically functionalized so it can be receptive to detecting a specific gas or volatile organic compound. While there are a few good reference recipes that offer a reasonable starting point, the exact requirements for the end user needs to be understood so that a robust multi-modal sensor is produced to reliably detect an alarm condition, in presence of detectable levels of the target gas. For the grapehen-FET gas sensor design, we will deposit thin film graphene over interdigitated source and drain electrodes, over a bottom gate-graphene oxide dielectric. In order to make graphene oxide selective to target gas molecules, functional groups will again be added through chemical modification.****These graphene oxide based gas sensors will facilitate room temperature detection of target gas molecules with ultra high sensitivity and selectivity, and offer a low-cost and longer lifespan alternative to the current commercial benchmark of electrochemical gas sensors. ******

在这个项目中，我们将创建功能化的石墨烯氧化物膜为基础的叉指型化学电阻和半导体气体传感器。我们将研究氧化石墨烯薄膜的2D合成和膜功能化的新方法，用于在室温下选择性气体检测。为了说明其商业实用性，我们将在芯片封装和原型封装的同时对传感器进行实验室测试。* 工程设计挑战包括在定制的交叉指型管芯上图案化薄膜氧化石墨烯。石墨烯薄膜需要进行化学功能化，以便能够检测特定气体或挥发性有机化合物。虽然有一些很好的参考配方提供了合理的起点，但需要了解最终用户的确切要求，以便在存在可检测水平的目标气体的情况下，生产出可靠的多模态传感器来可靠地检测报警条件。对于gragehen-FET气体传感器设计，我们将在交叉的源极和漏极电极上、在底部栅极氧化石墨烯电介质上沉积存款薄膜石墨烯。为了使氧化石墨烯对目标气体分子具有选择性，将再次通过化学改性添加官能团。这些基于氧化石墨烯的气体传感器将有助于以超高灵敏度和选择性对目标气体分子进行室温检测，并为当前电化学气体传感器的商业基准提供低成本和更长寿命的替代方案。******