High performance metal-insulator-graphene diodes for radio frequency power detection application.
High performance metal-insulator-graphene diodes for radio frequency power detection application.
复制标题
用于射频功率检测应用的高性能金属-绝缘体-石墨烯二极管。
DOI：
10.1039/c7nr02793a
复制
发表时间：
2017
期刊：
影响因子：
6.7
通讯作者：
D. Neumaier
中科院分区：
文献类型：
--
作者：
M. Shaygan;Zhenxing Wang;M. Elsayed;M. Otto;G. Iannaccone;Ahmed Hamed Ghareeb;G. Fiori;R. Negra;D. Neumaier
以化学气相沉积生长的石墨烯为衬底，以二氧化钛为势垒材料，采用可伸缩的方法实现了射频功率探测用垂直金属绝缘体石墨烯二极管。考虑到在石墨烯-二氧化钛界面的偏压诱导势垒降低，流过二极管的电流可以用热电子发射理论来描述。这些二极管在静态工作时表现出优异的品质因数，包括高达28A cm-2的高导通电流密度、高达520的高不对称性、高达15的最大非线性以及高达26V-1的最大响应度，表现优于最先进的金属-绝缘体-金属和MIG二极管。给出了基于MIG二极管的射频功率检测，在2.4 GHz和49.4 GHz下的响应度分别为2.8V W-1和1.1V W-1。
Vertical metal-insulator-graphene (MIG) diodes for radio frequency (RF) power detection are realized using a scalable approach based on graphene grown by chemical vapor deposition and TiO2 as barrier material. The temperature dependent current flow through the diode can be described by thermionic emission theory taking into account a bias induced barrier lowering at the graphene TiO2 interface. The diodes show excellent figures of merit for static operation, including high on-current density of up to 28 A cm-2, high asymmetry of up to 520, strong maximum nonlinearity of up to 15, and large maximum responsivity of up to 26 V-1, outperforming state-of-the-art metal-insulator-metal and MIG diodes. RF power detection based on MIG diodes is demonstrated, showing a responsivity of 2.8 V W-1 at 2.4 GHz and 1.1 V W-1 at 49.4 GHz.
影响因子：
4.6
作者：
Schall, Daniel;Otto, Martin;Neumaier, Daniel;Kurz, Heinrich
通讯作者：
Kurz, Heinrich
DOI：
10.1007/s00339-015-9582-5
发表时间：
2016-02-01
影响因子：
2.7
作者：
Chavarin, Carlos Alvarado;Sagade, Abhay A.;Mertin, Wolfgang
通讯作者：
Mertin, Wolfgang