Memorias de investigación
Communications at congresses:
Damage Reduction of the Laser Drilling Process on Back Contact Solar Cells by Chemical Treatment
Year:2012
Research Areas
  • Engineering
Information
Abstract
Production of back contact solar cells requires holes generations on the wafers to keep both positive and negative contacts on the back side of the cell. This drilling process weakens the wafer mechanically due to the presence of the holes and the damage introduced during the process as microcracks. In this study, several chemical processes have been applied to drilled wafers in order to eliminate or reduce the damage generated during this fabrication step. The treatments analyzed are the followings: alkaline etching during 1, 3 and 5 minutes, acid etching for 2 and 4 minutes and texturisation. To determine mechanical strength of the samples a common mechanical study has been carried out testing the samples by the Ring on Ring bending test and obtaining the stress state in the moment of failure by FE simulation. Finally the results obtained for each treatment were fitted to a three parameter Weibull distribution
International
Si
Congress
27th European Photovoltaic Solar Energy Conference and Exhibition
960
Place
Frankfurt, Germany
Reviewers
Si
ISBN/ISSN
3-936338-28-0
10.4229/27thEUPVSEC2012-2DO.2.3
Start Date
24/09/2012
End Date
28/09/2012
From page
832
To page
835
27th European Photovoltaic Solar Energy Conference and Exhibition Proceedings of the international Conference held in Frankfurt, Germany 24 - 28 September 2012
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras