Memorias de investigación
Communications at congresses:
Optimizing the Density of Holes of EWT Solar Cells Taking Into Consideration Mechanical Aspects
Year:2011
Research Areas
  • Engineering,
  • Electronic technology and of the communications
Information
Abstract
EWT solar cells start from drilled wafers with approximately 100 holes/cm2. These holes act as stress concentrators leading to a reduction in the mechanical strength of this type of wafers. The viability of cells with higher density of holes has been studied. To this end, sets of wafers with different density of holes have been characterized. The ring on ring test has been employed and FE models have been developed to simulate the test. The statistical evaluation permits to draw conclusions about the reduction of the strength depending on the density of holes. Moreover, the stress concentration around the holes has been studied by means of the FE method employing the sub-modeling technique. The maximum principal stress of EWT wafers with twice the density of holes of commercial ones is almost the same. However, the mutual interaction between the stress concentration effects around neighboring holes is only observed for wafers with a density of 200 holes/cm2.
International
Si
Congress
26th European Photovoltaic Solar Energy Conference and Exhibition
960
Place
Hamburgo, Alemania
Reviewers
Si
ISBN/ISSN
3-936338-27-2
10.4229/26thEUPVSEC2011-2BV.2.55
Start Date
05/09/2011
End Date
09/09/2011
From page
1585
To page
1588
26th European Photovoltaic Solar Energy Conference Proceedings of the International Conference held in Hamburg, Germany 5 - 9 September 2011
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras