scholarly journals Metal-insulator-metal diodes with sub-nanometre surface roughness for energy-harvesting applications

2017 ◽  
Vol 181 ◽  
pp. 34-42 ◽  
Author(s):  
A.A. Khan ◽  
G. Jayaswal ◽  
F.A. Gahaffar ◽  
A. Shamim
Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7023
Author(s):  
Ali Yahyaoui ◽  
Ahmed Elsharabasy ◽  
Jawad Yousaf ◽  
Hatem Rmili

This work presents the design and analysis of a metal-insulator-metal (MIM)-based optical log spiral rectenna for efficient energy harvesting at 28.3 THz. To maximize the benefits of the enhanced field of the proposed nano-antenna in the rectification process, the proposed design considers the antenna arms (Au) as the electrodes of the rectifying diode and the insulator is placed between the electrode terminals for the compact design of the horizontal MIM rectenna. The rectifier insulator, Al2O3, was inserted at the hotspot located in the gap between the antennas. A detailed analysis of the effect of different symmetric and asymmetric MIM-configurations (Au-Al2O3-Ag, Au-Al2O3-Al, Au-Al2O3-Cr, Au-Al2O3-Cu, and Au-Al2O3-Ti) was conducted. The results of the study suggested that the asymmetric configuration of Au-Al2O3-Ag provides optimal results. The proposed design benefits from the captured E-field intensity, I-V, resistivity, and responsivity and results in a rectenna that performs efficiently.


Author(s):  
Filiz Yesilkoy ◽  
Kwangsik Choi ◽  
Sunil Mittal ◽  
Martin Peckerar ◽  
Mario Dagenais

2013 ◽  
Vol 64 (3) ◽  
Author(s):  
Mohd Khairul Hisham Ismail ◽  
Mazlina Esa ◽  
Noor Asniza Murad ◽  
Mohd Fairus Mohd Yusoff

Nowadays, numerous devices to manipulate high frequencies for various applications are rapidly being investigated. Among them, nano-antennas for energy harvesting application at thermal radiation spectrum received most attention. A potential of versatile rectangular patch with perturbation slit tunnel that can collect electrical field energy is studied. The antenna performances are defined over field strength and current responses. The electrical field concentrated at the slit junction can be tuned by verifying the perturbation slit parameters. The electrical field amplitude of approximately 110 V/m is achieved with slit length of 1.0 µm. The field then can be guided out through the tunnel with some amplitude degradation in order to be integrated with metal-insulator-metal diode for energy conversion. The diode current obtained inside the insulator layer is compared with published results and it performs outstandingly. It was found that the proposed antenna exhibits promising performances that is suitable as an efficient energy harvesting device.


2020 ◽  
Vol 20 (6) ◽  
pp. 3780-3784
Author(s):  
Kapil Bhatt ◽  
Sandeep Kumar ◽  
C. C. Tripathi

Metal-Insulator-Metal (MIM) diodes used for infrared detection and frequency mixing since many decades and their development for energy harvesting applications in rectenna solar cell has accelerated a decade ago. In the horizon of these applications less complex fabrication methodology, accurate simulation methods and optimum material combination are required. Ultra-fast response of MIM diodes makes them a potential candidate for solar energy harvesting applications. Here in this work, the design and fabrication issues of MIM diode from simulation methodology based on insulating thickness properties to the fabrication methodology are discussed. MIM diode for Al–Al2O3–Ag combination is fabricated and characteristics such as I(V), asymmetry and non-linearity are reported.


2011 ◽  
Vol 1303 ◽  
Author(s):  
Matthew Chin ◽  
Barbara Nichols ◽  
Richard Osgood ◽  
Stephen Kilpatrick ◽  
Madan Dubey ◽  
...  

ABSTRACTMethods for extracting or harvesting energy from the surrounding battlefield environment are of great importance to the United States Army. Scavenging energy from local environments reduces the required energy and weight transported to the theater. Micro- and nano-scale metal-insulator-metal (MIM) tunnel diodes are being developed to provide half-wave rectification as part of a “rectenna” energy harvesting system, which includes a radiation-collecting antenna, a rectifying MIM tunnel diode, and a storage capacitor. In this work, high-frequency MIM tunnel diodes for power rectification were designed, fabricated and characterized. Planar Pt/TiO2/Ti stacks are being fabricated to create a diode with highly asymmetric I-V characteristics that has a very low threshold voltage. The metals were chosen for their high work function difference, and the insulator was chosen for its barrier height, its compatibility with Ti, and its availability. The energy band diagram and the I-V characteristics were modeled to determine the feasibility of the Pt/TiO2/Ti material system for use as a rectifier diode in a rectenna system. Metals and insulator thin films were deposited onto silicon dioxide/silicon substrates. Pillars with lateral dimensions ranging from 20 μm x 20 μm up to 100 μm x 100 μm were fabricated. The dielectric thickness of the MIM diode was varied from 5 nm up to 50 nm to determine the optimal thickness for quantum tunneling. I-V measurements were taken using an electrical characterization system to confirm a non-linear, asymmetric response on a survey of devices fabricated with varying areas. Preliminary results exhibit asymmetric I-V characteristics with threshold voltages of less than 700 mV.


2016 ◽  
Author(s):  
Elif G. Arsoy ◽  
Mesut Inac ◽  
Atia Shafique ◽  
Meric Ozcan ◽  
Yasar Gurbuz

2011 ◽  
Author(s):  
Terrance O'Regan ◽  
Matthew Chin ◽  
Cheng Tan ◽  
Anthony Birdwell

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