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 - 氧化物膜基于互插的化学和半导体气体传感器。我们将研究氧化石墨烯膜和膜功能化的2D合成的新方法，以在室温下进行选择性气体检测。为了说明其商业公用事业，我们将在模具封装以及原型包装的同时对传感器进行实验室测试。 ****工程设计的挑战包括在定制互插的模具上绘制薄膜氧化石墨烯。石墨烯膜需要化学功能化，因此可以接受检测特定的气体或挥发性有机化合物。尽管有一些好的参考配方提供合理的起点，但需要了解最终用户的确切要求，以便在有可检测到的目标气体水平的情况下生产出强大的多模式传感器来可靠地检测出警报状态。对于葡萄藤 - 弗特气体传感器设计，我们将通过底部闸门氧化烯电介质将薄膜石墨烯放在互插的源和排水电极上。为了使氧化石墨烯对目标气体分子的选择性选择性，将通过化学修饰再次添加官能团。****这些基于氧化石墨烯的气体传感器将促进具有超高敏感性和选择性的目标气体分子的室温检测，并提供低成本和更长的寿命替代品，并提供了较长的寿命替代品，可替代当前的现有商业基准。 ******