2022 Fiscal Year Annual Research Report
Development of High-performance Rectenna Diode for Mid-infrared / THz Optical Power Conversion
| Project/Area Number |
22J11167
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| Allocation Type | Single-year Grants |
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| Research Institution | Tohoku University |
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Principal Investigator |
LIU ZHEN 東北大学, 工学研究科, 特別研究員(DC2)
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| Project Period (FY) |
2022-04-22 – 2024-03-31
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| Keywords | Energy harvesting / High rectification / Optical rectenna / Tunnel diode / MIM diode / Nanoparticles / Electric field |
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| Outline of Annual Research Achievements |
During this year, the progress mainly including 3 parts:
1. Clarify the electron tunneling behavior in MIM diodes with electric field concentration effect. Establish a comprehensive model for electron tunneling that considers the configuration and effect of the MIM diode.
2. Design and fabricate MIM diodes with nanoparticles (NPs) to achieve electric field concentration effect. Optimize the configuration of the MIM diode using finite element method and fabricate a platinum NPs array using atomic layer deposition.
3. Characterize the MIM diode with NPs, and demonstrate a significant improvement of ~300 times in rectification performance comparing with the MIM diode without NPs.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The rectification performance model of metal-insulator-metal (MIM) diodes with comprehensive configuration under optical illumination has been established, and a high-yield fabrication method for MIM diodes has also been developed. Optical rectennas for harvesting mid-infrared radiation have been designed and are currently in the process of fabrication. In the next steps, reliable fabrication processes will be further developed, and the rectification performance of these optical rectennas for mid-infrared radiation will be characterized. In consideration of the above situation, I think this research is progressing as expected.
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| Strategy for Future Research Activity |
In the future, the MIM diodes with high rectification performance that have been developed will be integrated into the ongoing development of optical rectennas for harvesting mid-infrared radiation energy. Furthermore, novel configuration methods will be explored to significantly enhance the input power density thus improve the rectification efficiency of the radiation.
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