研究目的
Investigating the use of graphene film drooped on a bottom gate bottom contact (BGBC) for fabricating gas sensing technology capable of identifying toxic gases like CO2, NO2, CO at ultra-low concentrations.
研究成果
The graphene sensors with the typical entrenched sensing tool records modulation of carrier density because of charge transfer among gas molecule and graphene, where the gas molecule behave as acceptor. It is credible that defect in layer of graphene work like centre of adsorption for gas molecules, hence acceptors modulate layer conductivity. Bottom gate bottom contact (BGBC) gas sensor showcased strong resistance variations when exposed to various toxic gasses. The response is much greater than that stated for alike devices using other materials. The sensitivity of .001 was recorded as a change in maximum drain current. The sensitivity to gasses was increased on heating the sample and increasing the moisture content whereas response and recovery time of graphene was reduced.
研究不足
The study focuses on the sensitivity of graphene-based sensors to specific toxic gases (CO2, NO2, CO) and does not explore the sensor's response to a broader range of gases or under varying environmental conditions.
