Photon-Assisted Tunneling in Carbon Nanotube Optical Rectennas: Characterization and Modeling
Photon-Assisted Tunneling in Carbon Nanotube Optical Rectennas: Characterization and Modeling
复制标题
DOI：
10.1021/acsaelm.9b00058
复制
发表时间：
2019-05-01
影响因子：
4.7
通讯作者：
Cola, Baratunde A.
中科院分区：
文献类型：
--
作者：
Anderson, Erik C.;Cola, Baratunde A.
我们介绍了具有多绝缘体、金属-绝缘体-金属隧道二极管的碳纳米管 (CNT) 整流天线的光学特性和建模。该二极管采用四层 Al2O3 和 ZrO2 电介质，可在低导通电压下获得强非线性和高度不对称的电流密度。 CNT 整流天线器件在全光谱（404-980 nm）内显示能量转换。我们引入光子辅助隧道效应 (PAT) 理论来模拟基于未照明二极管特性的光学行为。我们的模型显示 PAT 与我们的实验结果之间的一致性，并且拟合表明光电压与波长相关。我们讨论了整流天线参数的影响，并阐明了 CNT 整流天线器件的性能限制。
We present optical characterization and modeling of carbon nanotube (CNT) rectennas featuring multiinsulator, metal-insulator-metal tunneling diodes. The diodes use four layers of Al2O3 and ZrO2 dielectrics to obtain strong nonlinearity and highly asymmetric current density at low turn-on voltage. The CNT rectenna devices show energy conversion in the full optical spectrum (404-980 nm). We introduce the theory of photon-assisted tunneling (PAT) to model the optical behavior based on unilluminated diode characteristics. Our model shows agreement between PAT and our experimental results, and fitting suggests a wavelength-dependent optical voltage. We discuss the impact of rectenna parameters and elucidate performance limits to our CNT rectenna device.