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Large‐area p‐type HIP‐MWT silicon solar cells with screen printed contacts exceeding 20% efficiency
Authors:Benjamin Thaidigsmann  Elmar Lohmüller  Ulrich Jäger  Sebastian Mack  Friedrich Lottspeich  Alma Spribille  Katrin Birmann  Denis Erath  Andreas Wolf  Florian Clement  Daniel Biro  Ralf Preu
Institution:Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg, Germany
Abstract:We present metal wrap through (MWT) silicon solar cells with passivated surfaces based on a simplified device structure. This so‐called HIP‐MWT structure (high‐performance metal wrap through) does not exhibit an emitter on the rear side and therefore simplifies processing. The confirmed peak efficiency of the fabricated solar cells with an edge length of 125 mm, screen printed contacts and solder pads is 20.2%. To our knowledge, this is the highest value reported for large‐area p‐type silicon solar cells to date.
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Keywords:silicon  solar cells  screen printing  efficiency
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