Final manufacturing process of front side metallisation on silicon solar cells using conventional and unconventional techniques

english

2013

volume 59, issue 3

electrical properties   screen printing   selective laser sintering   solar cells

Univerza v Ljubljani, Fakulteta za strojništvo
(Obvezni izvod spletne publikacije)

The paper presents the results of the investigation of the front electrode manufactured using two silver pastes (PV 145 manufactured by Du Pont and another based on nanopowder experimentally prepared) on monocrystalline silicon solar cells in order to reduce contact resistance. The aim of the paper was a comparison between a conventional and an unconventional method to improve the quality of forming electrodes of silicon solar cells. The Screen Printing (SP) method is the most widely used contact formation technique for commercial silicon solar cells. Selective Laser Sintering (SLS) is a modern manufacturing technique, which uses a high power CO2 laser to melt or sinter metal powder particles into a mass that has the desired three-dimensional shape, in precisely defined areas. The whole process is controlled by a program that is used for micro-processing. An innovative aspect of this method is the application of a nano silver paste to create the seed layer of the front electrode using the SLS method.

14.07.2014