Print Email Facebook Twitter Silicon heterojunction solar cells with up to 26.81% efficiency achieved by electrically optimized nanocrystalline-silicon hole contact layers Title Silicon heterojunction solar cells with up to 26.81% efficiency achieved by electrically optimized nanocrystalline-silicon hole contact layers Author Lin, H. (TU Delft Cyber Security; Sun Yat-sen University; LONGi Green Energy Technology) Yang, Miao (LONGi Green Energy Technology) Ru, Xiaoning (LONGi Green Energy Technology) Wang, Genshun (Sun Yat-sen University; LONGi Green Energy Technology) Yin, Shi (LONGi Green Energy Technology) Peng, Fuguo (LONGi Green Energy Technology) Han, C. (TU Delft Photovoltaic Materials and Devices; Sun Yat-sen University) Procel Moya, P.A. (TU Delft Photovoltaic Materials and Devices) Isabella, O. (TU Delft Photovoltaic Materials and Devices) Date 2023 Abstract Silicon heterojunction (SHJ) solar cells have reached high power conversion efficiency owing to their effective passivating contact structures. Improvements in the optoelectronic properties of these contacts can enable higher device efficiency, thus further consolidating the commercial potential of SHJ technology. Here we increase the efficiency of back junction SHJ solar cells with improved back contacts consisting of p-type doped nanocrystalline silicon and a transparent conductive oxide with a low sheet resistance. The electrical properties of the hole-selective contact are analysed and compared with a p-type doped amorphous silicon contact. We demonstrate improvement in the charge carrier transport and a low contact resistivity (<5 mΩ cm2). Eventually, we report a series of certified power conversion efficiencies of up to 26.81% and fill factors up to 86.59% on industry-grade silicon wafers (274 cm2, M6 size). To reference this document use: http://resolver.tudelft.nl/uuid:d066db36-8155-4986-a95d-6c24c720972c DOI https://doi.org/10.1038/s41560-023-01255-2 ISSN 2058-7546 Source Nature Energy, 8 (8), 789-799 Part of collection Institutional Repository Document type journal article Rights © 2023 H. Lin, Miao Yang, Xiaoning Ru, Genshun Wang, Shi Yin, Fuguo Peng, C. Han, P.A. Procel Moya, O. Isabella, More Authors Files PDF s41560_023_01255_2.pdf 4 MB Close viewer /islandora/object/uuid:d066db36-8155-4986-a95d-6c24c720972c/datastream/OBJ/view