New concepts for front side metallization of industrial silicon solar cells [Elektronische Ressource] / vorgelegt von Ansgar Mette

New Concepts for Front Side Metallization of Industrial Silicon Solar Cells Dissertation zur Erlangung des Doktorgrades der Fakultät für Angewandte Wissenschaften der Albert-Ludwigs-Universität Freiburg im Breisgau vorgelegt von Ansgar Mette Fraunhofer-Institut für Solare Energiesysteme Freiburg im Breisgau 2007 Dekan: Prof. Dr. Bernhard Nebel Hauptreferent: PD Dr. Volker Wittwer Koreferent: Prof. Dr. Jürgen Wilde Datum der Prüfung: 26. November 2007 To my parents, with love and gratitude. Table of contents INTRODUCTION..........................................................................................1 Thesis motivation ...................................................................................................... 1 Thesis outline ............................................................................................................ 3 1 CRYSTALLINE SILICON SOLAR CELLS ............................................5 1.1 Structure and operation principle.................................................................... 5 1.1.1 Current-Voltage curve.............................................................................. 6 1.1.2 Physical and technological efficiency limitations ................................... 9 1.