Impact of the Thicknesses of the p and p+ Regions on the Electrical Parameters of a Bifacial PV Cell  

作　　者：Ramatou Konate Bernard Zouma Adama Ouedraogo Bruno Korgo Martial Zoungrana Sié Kam Ramatou Konate;Bernard Zouma;Adama Ouedraogo;Bruno Korgo;Martial Zoungrana;Sié Kam(Laboratoire d’Energies Thermiques REnouvelables (L.E.T.RE), Département de Physique, Unité de Recherche et de Formation en Sciences Exactes et Appliquées, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso;Centre Universitaire Polytechnique de Kaya (CUP-Kaya), Kaya, Burkina Faso)

机构地区：[1]Laboratoire d’Energies Thermiques REnouvelables (L.E.T.RE), Département de Physique, Unité de Recherche et de Formation en Sciences Exactes et Appliquées, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso [2]Centre Universitaire Polytechnique de Kaya (CUP-Kaya), Kaya, Burkina Faso

出　　处：《Energy and Power Engineering》2022年第2期133-145,共13页能源与动力工程（英文）

摘　　要：The present paper is about a contribution to the bifacial PV cell performances improvement. The PV cell efficiency is weak compared to the strong energy demand. In this study, the base thickness impacts and the p+</sup> zone size influence are evaluated on the rear face of the polycrystalline back surface field bifacial silicon PV cell. The photocurrent density and photovoltage behaviors versus thickness of these regions are studied. From a three-dimensional grain of the polycrystalline bifacial PV cell, the magneto-transport and continuity equations of excess minority carriers are solved to find the expression of the density of excess minority carriers and the related electrical parameters, such as the photocurrent density, the photovoltage and the electric power for simultaneous illumination on both sides. The photocurrent density, the photovoltage and electric power versus junction dynamic velocity decrease for different thicknesses of base and the p+</sup> region increases for simultaneous illumination on both sides. It is found that the thickness of the p+</sup> region at 0.1 μm and the base size at 100 μm allow reaching the best bifacial PV cell performances. Consequently, it is imperative to consider the reduction in the thickness of the bifacial PV cell for exhibition of better performance. This reduced the costs and increase production speed while increasing conversion efficiency.The present paper is about a contribution to the bifacial PV cell performances improvement. The PV cell efficiency is weak compared to the strong energy demand. In this study, the base thickness impacts and the p+</sup> zone size influence are evaluated on the rear face of the polycrystalline back surface field bifacial silicon PV cell. The photocurrent density and photovoltage behaviors versus thickness of these regions are studied. From a three-dimensional grain of the polycrystalline bifacial PV cell, the magneto-transport and continuity equations of excess minority carriers are solved to find the expression of the density of excess minority carriers and the related electrical parameters, such as the photocurrent density, the photovoltage and the electric power for simultaneous illumination on both sides. The photocurrent density, the photovoltage and electric power versus junction dynamic velocity decrease for different thicknesses of base and the p+</sup> region increases for simultaneous illumination on both sides. It is found that the thickness of the p+</sup> region at 0.1 μm and the base size at 100 μm allow reaching the best bifacial PV cell performances. Consequently, it is imperative to consider the reduction in the thickness of the bifacial PV cell for exhibition of better performance. This reduced the costs and increase production speed while increasing conversion efficiency.

关 键 词：Doped p+ Region Bifacial PV Cell Photocurrent Density PHOTOVOLTAGE Polycrystalline Solar Cell 

分 类 号：TG1[金属学及工艺—金属学]