Nano Antennas for Ultra-Fast Optical and Infrared Sensing and Solar Energy Harvesting

  • Ahmed M. Yassin

Student thesis: Master's Thesis

Abstract

The abundance and renewable nature of solar energy has led to various efforts to harvest and utilize it as a power source. Photovoltaic solar cells are currently the tools of choice for solar energy harvesting despite their low efficiency. Recently, advancements in Nano-scale fabrication and high frequency diodes have opened the door to explore the use of antennas for solar energy harvesting. While not operating on the same principles, antennas are theorized to outperform Photovoltaic cells in capturing energy from the sun. However, the extreme high frequency of solar radiation makes creating a system that can capture this energy efficiently a challenging task. Carbon nanotubes (CNTs) as a candidate for rectenna energy harvesting is the main focus of this theses. In this thesis we explore the use of single walled carbon nanotube antennas for energy harvesting. CNT antennas are characterized by their current-voltage behavior in the presence and absence of light. This current voltage behavior is then explained in terms of the band structure of the materials involved. The behavior of the carbon Nanotube rectennas is then modeled to confirm the analysis performed. The results of this thesis suggest that CNT rectennas are viable as photodetectors, yet more work is needed for it to be a viable energy harvesting resource.
Date of AwardDec 2021
Original languageAmerican English

Keywords

  • Rectenna
  • Carbon Nanotubes
  • Tunneling diodes
  • Solar energy Harvesting.

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