A theoretical study of radio wave attenuation through a polycrystalline silicon solar cell

Abstract

One-dimensional study of both electronic and electrical parameters of a silicon solar cell in the presence or not of an electric field, a magnetic field, or an electromagnetic field does not take into account the grain size and the grain boundary recombination velocity. A three-dimensional study, on the contrary, takes those factors into account.However, the three-dimensional study poses the problem of the attenuation of the wave in the grain of the polycrystalline solar cell as well as the issue of finding the expressions of its components. This study aimed to solve these issues by considering radio waves, which are becoming more and more present in our environment via telecommunication masts.We first obtained the expressions of both the electric field and magnetic field in a grain of a polycrystalline silicon solar cell by solving the dispersion equation. Then we investigated the evolution of the radio wave into the grain by analyzing the behavior of the exponential coefficient that appeared in the expressions of both the electric field and the magnetic field. The study has shown that the attenuation of the radio wave can be neglected through the polycrystalline silicon solar grain and by extension through the polycrystalline silicon solar cell.

Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell

“…(iv) e concentration of electrons photogenerated in the p-type base is so lower than the doping density of the base so that the analysis was developed in the assumption of low-level injection. (v) e electromagnetic wave is a radio wave which meets the polysilicon grain in the z-depth base region such as 0 < z < H [1]. (vi) e base thickness of the polysilicon grain is H � 0.03 cm and the electron parameters are S b � 104 cm s − 1 , S gb � 103 cm s − 1 , L n � 0.015 cm, and D n � 26 cm 2 s − 1 (vii) e theoretical efficiency of the PV cell, calculated using previous values and grain size g � g x � g y � 0.01 cm, is 15.70%.…”

“…e electric and magnetic field expressions in the polysilicon grain are given by equations (3) and (4), respectively [1]:…”

“…where ℓ p � (2/c) ��� ε/μ is the penetration length of the radio waves in the polysilicon grain. e penetration length is the distance on which the magnitude of the electromagnetic wave is divided by exp (1) and the value of the magnitude of the electric field is 0.367E 0 :…”

“…e interaction between illuminated cells that behave as an electric conductor and radio waves causes the attenuation of these waves in the solar cells and the difficulty of determining the expressions of the electric and magnetic fields of the waves. In a previous work, we investigated the attenuation of radio waves through a polysilicon solar cell illuminated by a monochromatic light by analyzing the behaviour of the attenuation factor and by considering the size of the grain and the incident light wavelength [1].…”

Effect of Incidence Angle of Magnetic Field on the Performance of a Polycrystalline Silicon Solar Cell under Multispectral Illumination

“…Each grain has the same electronic and electrical characteristics as the solar cell and that allowed us to conduct the study on a grain and then extrapolate the results to a solar cell [19]. The isolated grain of polycrystalline silicon solar cell illustrated in Figure 1 is used in the study with the following assumptions:…”