Print Email Facebook Twitter Advanced light management techniques for two-terminal hybrid tandem solar cells Title Advanced light management techniques for two-terminal hybrid tandem solar cells Author Blanker, A.J. (TU Delft Photovoltaic Materials and Devices) Berendsen, P.P.A. (TU Delft Photovoltaic Materials and Devices) Phung, N. (External organisation) Vroon, Z.E.A.P. (TNO/Solliance) Zeman, M. (TU Delft Electrical Sustainable Energy) Smets, A.H.M. (TU Delft Photovoltaic Materials and Devices) Department Electrical Sustainable Energy Date 2018 Abstract Multi-junction solar cells are considered for various applications, as they tackle various loss mechanisms for single junction solar cells. These losses include thermalization and non-absorption below the band gap. In this work, a tandem configuration comprising copper-indium-gallium-di-selenide (CIGS) and hydrogenated amorphous silicon (a-Si:H) absorber layers is studied. Two main challenges are addressed in this work. Firstly, the natural roughness of CIGS is unfavorable for monolithically growing a high quality a-Si:H top cell. Some sharp textures in the CIGS induce shunts in the a-Si:H top junction, limiting the electrical performance of such a configuration. To smoothen this interface, the possibility of mechanically polishing the intermediate i-ZnO layer has been explored. The second challenge that is addressed, is the significant current mismatch in these tandem architectures. To enhance absorption in the current-limiting top cell, the ZnO:Al front electrode was textured by means of wet-etching the entire tandem stack. We demonstrated that one can manipulate the morphology of the random textures by varying the growth conditions of the ZnO:Al, leading to better light management in these devices. Subject Amorphous siliconCIGSLight managementPolishingTexturingTwo-terminal tandem cells To reference this document use: http://resolver.tudelft.nl/uuid:9c8d745a-4ca4-446e-8458-651f0c249ea0 DOI https://doi.org/10.1016/j.solmat.2018.02.017 ISSN 0927-0248 Source Solar Energy Materials & Solar Cells, 181, 77-82 Part of collection Institutional Repository Document type journal article Rights © 2018 A.J. Blanker, P.P.A. Berendsen, N. Phung, Z.E.A.P. Vroon, M. Zeman, A.H.M. Smets Files PDF 45256796_1_s2.0_S09270248 ... 7_main.pdf 1.32 MB Close viewer /islandora/object/uuid:9c8d745a-4ca4-446e-8458-651f0c249ea0/datastream/OBJ/view