Research Article Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell Vinci de Dieu Bokoyo Barandja, 1,2 Bernard Zouma, 1 Auguste Oscar Mackpayen, 3 Martial Zoungrana, 1 Issa Zerbo , 1 and Dieudonn´ e Joseph Bathiebo 1 1 Laboratory of ermal and Renewable Energies, Department of Physics, Unit of Training and Research in Pure and Applied Sciences, University Joseph KI-ZERBO, Ouagadougou 03 BP 7021, Burkina aso 2 Department of Physics, University of Bangui, Bangui BP 908, Central African Republic 3 Ecole Normale Sup´ erieure, University of Bangui, Bangui BP 908, Central African Republic Correspondence should be addressed to Issa Zerbo; iszerbo@gmail.com Received 15 October 2019; Revised 17 December 2019; Accepted 2 January 2020; Published 30 January 2020 Academic Editor: Mauro Parise Copyright © 2020 Vinci de Dieu Bokoyo Barandja et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. e 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. is 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. e propagation of the radio waves into the polycrystalline silicon grain can be considered without attenuation that can be neglected. 1.Introduction e interaction between illuminated cells that behave as an electric conductor and radio waves causes the at- tenuation of these waves in the solar cells and the dif- ficulty 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]. In this present work, we studied the attenuation of radio waves in a polysilicon solar cell which is illuminated with multispectral light. e study considered the size of the grain and the recombination velocity at grain boundaries and analyzed the behaviour of the penetration length as well as one of the attenuation factors. 2. Theoretical Background e propagation of the electromagnetic field generated by radio waves into a polysilicon grain illuminated by multi- spectral light is illustrated in Figure 1. e polysilicon grain is isolated from a polycrystalline back surface field silicon PV cell with the n + − p− p + structure. e following assumptions were made in this study: (i) e grain has a parallelepipedic form with the same electronic and electrical parameters like the solar cell [2, 3]. (ii) e recombination velocity S gb at grain boundaries is constant and independent of illumination, while the grain boundaries are perpendicular to the junction [2]. (iii) e low doped p-type base is quasi-neutral so that the crystalline electric field in the base of the solar cell can be neglected [4]. Hindawi International Journal of Antennas and Propagation Volume 2020, Article ID 6056712, 7 pages https://doi.org/10.1155/2020/6056712