中国物理B ›› 2021, Vol. 30 ›› Issue (9): 98503-098503.doi: 10.1088/1674-1056/abea8e

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Design and optimization of a nano-antenna hybrid structure for solar energy harvesting application

Mohammad Javad Rabienejhad1, Mahdi Davoudi-Darareh2, and Azardokht Mazaheri3,†   

  1. 1 Optics and Laser Science and Technology Research Center, Malek Ashtar University of Technology, Shahinshahr, Iran;
    2 Faculty of Science, Department of Physics, Malek Ashtar University of Technology, Shahinshahr, Iran;
    3 Department of Physics, University of Isfahan, Iran
  • 收稿日期:2020-12-18 修回日期:2021-01-22 接受日期:2021-03-01 出版日期:2021-08-19 发布日期:2021-09-16
  • 通讯作者: Azardokht Mazaheri E-mail:dokht2001@yahoo.com

Design and optimization of a nano-antenna hybrid structure for solar energy harvesting application

Mohammad Javad Rabienejhad1, Mahdi Davoudi-Darareh2, and Azardokht Mazaheri3,†   

  1. 1 Optics and Laser Science and Technology Research Center, Malek Ashtar University of Technology, Shahinshahr, Iran;
    2 Faculty of Science, Department of Physics, Malek Ashtar University of Technology, Shahinshahr, Iran;
    3 Department of Physics, University of Isfahan, Iran
  • Received:2020-12-18 Revised:2021-01-22 Accepted:2021-03-01 Online:2021-08-19 Published:2021-09-16
  • Contact: Azardokht Mazaheri E-mail:dokht2001@yahoo.com

摘要: A novel hybrid structure with high responsivity and efficiency is proposed based on an L-shaped frame nano-antenna (LSFNA) array for solar energy harvesting application. So, two types of LSFNAs are designed and optimized to enhance the harvesting characteristics of traditional simple electric dipole nano-antenna (SEDNA). The LSFNA geometrical dimensions are optimized to have the best values for the required input impedance at three resonance wavelengths of λres = 10 μm, 15 μm, and 20 μm. Then the LSFNAs with three different sizes are modeled like a planar spiral-shaped array (PSSA). Also, a fractal bowtie nano-antenna is connected with the PSSA in the array gap. This proposed hybrid structure consists of two main elements: (I) Three different sizes of the LSFNAs with two different material types are designed based on the thin-film metal-insulator-metal diodes that are a proper method for infrared energy harvesting. (Ⅱ) The PSSA gap is designed based on the electron field emission proposed by the Fowler-Nordheim theory for the array rectification. Finally, the proposed device is analyzed. The results show that the PSSA not only has an averaged 3-time enhancement in the harvesting characteristics (such as return loss, harvesting efficiency, etc.) than the previously proposed structures but also is a multi-resonance wide-band device. Furthermore, the proposed antenna takes up less space in the electronic circuit and has an easy implementation process.

关键词: field electron emission, infrared, metal-insulator-metal (MIM) diode, nano-antenna, photovoltaic effects, rectification, solar energy harvesting

Abstract: A novel hybrid structure with high responsivity and efficiency is proposed based on an L-shaped frame nano-antenna (LSFNA) array for solar energy harvesting application. So, two types of LSFNAs are designed and optimized to enhance the harvesting characteristics of traditional simple electric dipole nano-antenna (SEDNA). The LSFNA geometrical dimensions are optimized to have the best values for the required input impedance at three resonance wavelengths of λres = 10 μm, 15 μm, and 20 μm. Then the LSFNAs with three different sizes are modeled like a planar spiral-shaped array (PSSA). Also, a fractal bowtie nano-antenna is connected with the PSSA in the array gap. This proposed hybrid structure consists of two main elements: (I) Three different sizes of the LSFNAs with two different material types are designed based on the thin-film metal-insulator-metal diodes that are a proper method for infrared energy harvesting. (Ⅱ) The PSSA gap is designed based on the electron field emission proposed by the Fowler-Nordheim theory for the array rectification. Finally, the proposed device is analyzed. The results show that the PSSA not only has an averaged 3-time enhancement in the harvesting characteristics (such as return loss, harvesting efficiency, etc.) than the previously proposed structures but also is a multi-resonance wide-band device. Furthermore, the proposed antenna takes up less space in the electronic circuit and has an easy implementation process.

Key words: field electron emission, infrared, metal-insulator-metal (MIM) diode, nano-antenna, photovoltaic effects, rectification, solar energy harvesting

中图分类号:  (Field emitters and arrays, cold electron emitters)

  • 85.45.Db
84.40.Ba (Antennas: theory, components and accessories) 73.40.Ei (Rectification) 78.56.-a (Photoconduction and photovoltaic effects)