Abstract
The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of a polycrystalline silicon solar cell in a three-dimensional approach, it is necessary to assess the attenuation of the radio wave in the illuminated polysilicon grain and also to find the expressions of its components. This work investigated the attenuation of radio waves into a polycrystalline silicon grain by analyzing, firstly, the behaviour of the penetration length of the radio waves into the polysilicon grain and secondly, the behaviour of the attenuation factor. The propagation of the radio waves into the polycrystalline silicon grain can be considered without attenuation that can be neglected.
Highlights
(ii) e recombination velocity Sgb at grain boundaries is constant and independent of illumination, while the grain boundaries are perpendicular to the junction [2]
When radio waves during their propagation meet the polycrystalline silicon grain, there is interaction between the radio waves and the excess minority carriers photogenerated in the base of the polysilicon solar cell, resulting in an attenuation of the amplitude of the electric and magnetic fields related to these radio waves. is attenuation is due to the absorption of energy by the conductive matter which is the illuminated polysilicon grain
For investigating the propagation of radio waves through the polysilicon grain, this study analyzed in the first time the behaviour of the penetration length of the radio waves into the polysilicon grain and secondly the behaviour of the attenuation factor. is was done considering the size of the grain and the recombination velocity at grain boundaries
Summary
Emitter (n+-type) Junction (space charge region) Base (n-type) Rear zone (p+-type) gy gx Figure 1: Illuminated polysilicon grain under the electromagnetic wave. When radio waves during their propagation meet the polycrystalline silicon grain, there is interaction between the radio waves and the excess minority carriers photogenerated (electrons) in the base of the polysilicon solar cell, resulting in an attenuation of the amplitude of the electric and magnetic fields related to these radio waves. Is attenuation is due to the absorption of energy by the conductive matter which is the illuminated polysilicon grain This interaction manifests itself by an exchange of energy between the radio waves and the photogenerated electrons in the base of the polycrystalline silicon solar cell. The photogenerated electrons in the base can be accelerated by the electric field of the radio waves and collide with the tied electrons of atoms of silicon to create electrons-holes pairs resulting in an avalanche effect
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