Volume 13, 2022
Special Issue on ‘Recent Advances in Spectroscopy and Microscopy of Thin-films Materials, Interfaces, and Solar Cells 2021', edited by A. Vossier, M. Gueunier-Farret, J.-P. Kleider and D. Mencaraglia
|Number of page(s)||9|
|Section||High Efficiency Materials and Devices - New concepts|
|Published online||28 July 2022|
Electroluminescence analysis of silicon interdigitated back contact solar cells with a front surface selective band offset barrier
Université Paris-Saclay, CentraleSupélec, CNRS, Laboratoire de Génie Electrique et Electronique de Paris, 91192 Gif-sur-Yvette, France
2 Sorbonne Université, CNRS, Laboratoire de Génie Electrique et Electronique de Paris, 75252 Paris, France
3 Univ. Lyon, INSA Lyon, CNRS, Ecole Centrale de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, 69621 Villeurbanne, France
4 Département des Sciences Physiques, UVSQ, Université Paris-Saclay, 45 Av. des États-Unis, 78035 Versailles cedex, France
5 CEA, LITEN, INES, Department of Solar Technologies, 73375 Le Bourget du Lac, France
* e-mail: firstname.lastname@example.org
Accepted: 13 June 2022
Published online: 28 July 2022
Electroluminescence allows rapid characterization of an entire photovoltaic solar cell and visualization of defects at the micrometer scale. Here we focus on the optoelectronic properties of silicon interdigitated back contact cells characterized by electroluminescence. The spatially resolved electroluminescence helps us control the quality of interdigitated back contact structures used in silicon bottom subcells in a three-terminal tandem perovskite on silicon solar cell. Local variations in minority carrier diffusion length, surface recombination velocity and, the impact of resistive and optical losses were analyzed by electroluminescence mapping. In addition, we quantify the radiative saturation current density and the radiative open circuit voltage using the electroluminescence spectrum of the cell. This step allows us to accurately assess the performance limits induced in the device due to the non-radiative recombination.
Key words: Electroluminescence / characterization / three-terminal / tandem solar cell
© K.F. Ahanogbe et al., published by EDP Sciences, 2022
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