_ Section Nano antennas (Rectenna)
optical nano antennas (Rectenna) ( A practical solution with high efficiency compared to other technologies)
Researcher and author: Dr. Afshin Rashid
Note:Since the use of optical nano-antennas to collect solar energy provides a practical solution with high efficiency compared to other common photovoltaic technologies such as solar panels. has led to rapid development in the nano industry and optical materials.
When the solar electromagnetic wave hits the surface of the nano-antenna, a time-varying current is created on the surface of the nano-antenna, and as a result, a voltage is produced at the place of its feeding gap.Antenna device It is the one that can receive the electromagnetic wave existing in the space. In order to receive the solar electromagnetic wave by the antenna, the dimensions of the antenna must be in the same order as the wavelength of the input to its surface, so in order to receive the solar radiation, the wavelengths of the infrared, visible and including ultraviolet, an antenna with nanometer dimensions is needed. Since the use of optical nano antennas to collect solar energy provides a practical solution with high efficiency compared to other photovoltaic technologies. It is common like solar panels, it has led to rapid development in nano industry and optical materials.
An optical nano-antenna with linear polarization and 2/λ length, which has a relative bandwidth of 11%, will be able to collect about 75.2 pW. Therefore, if using an antenna with double polarization, the pW power is 5.5 will be achieved Due to the low receiving power of each independent nano antenna, it is customary to use anti-arrays in this cell, which has its own rules and methods. An antenna is a device that can receive electromagnetic waves in space. To receive waves Solar electromagnetic by the antenna, the dimensions of the antenna should be in the order of the wavelength of the input to its surface, therefore, in order to receive solar radiation that includes the wavelengths of the infrared, visible and ultraviolet regions, an antenna with nanometer dimensions is needed. Optical nanoantennas for solar energy harvesting provide a practical solution with high efficiency compared to other common photovoltaic technologies such as solar panels, leading to rapid development in the nano and materials industry. It has been illuminated.
Conclusion :
Since the use of optical nanoantennas for solar energy harvesting provides a practical solution with high efficiency compared to other common photovoltaic technologies such as solar panels, it has led to rapid development in the nano and optical materials industry.
Researcher and author: Dr. Afshin Rashid
Specialized doctorate in nano-microelectronics