17.6% Efficient tricrystalline silicon solar cells with spatially uniform texture

verfasst von
Christian Schmiga, Jan Schmidt, Axel Metz, Arthur Endrös, Rudolf Hezel
Abstract

Up to now solar cells fabricated on tricrystalline Czochralski-grown silicon (tri-Si) have shown relatively low short-circuit current densities of about 31-33 mA/cm2 because the three {110}-oriented grains cannot effectively be textured by commonly used anisotropic etching solutions. In this work, we have optimised a novel chemical texturing step for tri-Si and integrated it successfully into our solar cell process. Metal/insulator/semiconductor-contacted phosphorus.diffused n+p junction silicon solar cells with a silicon.dioxide-passivated rear surface and evaporated aluminium contacts were manufactured, featuring a spatially uniform surface texture over all three grains on both cell sides. Despite the simple processing sequence and cell structure, an independently confirmed record efficiency of 17.6% has been achieved. This excellent efficiency is mainly due to an increased short-circuit current density of 37mA/m2 obtained by substantially reduced reflection and enhanced light trapping.

Externe Organisation(en)
Institut für Solarenergieforschung GmbH (ISFH)
Shell
Typ
Artikel
Journal
Progress in Photovoltaics: Research and Applications
Band
11
Seiten
33-38
Anzahl der Seiten
6
ISSN
1062-7995
Publikationsdatum
16.12.2002
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Elektronische, optische und magnetische Materialien, Erneuerbare Energien, Nachhaltigkeit und Umwelt, Physik der kondensierten Materie, Elektrotechnik und Elektronik
Ziele für nachhaltige Entwicklung
SDG 7 – Erschwingliche und saubere Energie
Elektronische Version(en)
https://doi.org/10.1002/pip.479 (Zugang: Geschlossen)