Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Revisiting the Mechanism of Electric Field Sensing in Graphene Devices
ACS Omega ( IF 3.7 ) Pub Date : 2021-12-03 , DOI: 10.1021/acsomega.1c05530 Afsal Kareekunnan 1 , Tatsufumi Agari 1 , Ahmed M M Hammam 2 , Takeshi Kudo 3 , Takeshi Maruyama 3 , Hiroshi Mizuta 1 , Manoharan Muruganathan 1
ACS Omega ( IF 3.7 ) Pub Date : 2021-12-03 , DOI: 10.1021/acsomega.1c05530 Afsal Kareekunnan 1 , Tatsufumi Agari 1 , Ahmed M M Hammam 2 , Takeshi Kudo 3 , Takeshi Maruyama 3 , Hiroshi Mizuta 1 , Manoharan Muruganathan 1
Affiliation
|
Electric field sensing has various real-life applications, such as early prediction of lightning. In this study, we effectively used graphene as an electric field sensor that can detect both positive and negative electric fields. The response of the sensor is recorded as the change in drain current under the application of an electric field. In addition, by systematic analysis, we established the mechanism of the graphene electric field sensor, and it is found to be different from the previously proposed one. The mechanism relies on the transfer of electrons between graphene and the traps at the SiO2/graphene interface. While the direction of charge transfer depends on the polarity of the applied electric field, the amount of charge transferred depends on the magnitude of the electric field. Such a charge transfer changes the carrier concentration in the graphene channel, which is reflected as the change in drain current.
中文翻译：
重新审视石墨烯器件中电场传感的机制
电场传感具有多种实际应用，例如闪电的早期预测。在这项研究中，我们有效地将石墨烯用作可以检测正电场和负电场的电场传感器。传感器的响应被记录为施加电场时漏极电流的变化。此外，通过系统分析，我们建立了石墨烯电场传感器的机制，发现它与之前提出的不同。该机制依赖于石墨烯和 SiO 2处的陷阱之间的电子转移/石墨烯界面。虽然电荷转移的方向取决于施加电场的极性，但转移的电荷量取决于电场的大小。这种电荷转移改变了石墨烯通道中的载流子浓度，这反映为漏电流的变化。
更新日期：2021-12-14
中文翻译：
重新审视石墨烯器件中电场传感的机制
电场传感具有多种实际应用，例如闪电的早期预测。在这项研究中，我们有效地将石墨烯用作可以检测正电场和负电场的电场传感器。传感器的响应被记录为施加电场时漏极电流的变化。此外，通过系统分析，我们建立了石墨烯电场传感器的机制，发现它与之前提出的不同。该机制依赖于石墨烯和 SiO 2处的陷阱之间的电子转移/石墨烯界面。虽然电荷转移的方向取决于施加电场的极性，但转移的电荷量取决于电场的大小。这种电荷转移改变了石墨烯通道中的载流子浓度，这反映为漏电流的变化。
京公网安备 11010802027423号