Memorias de investigación
Communications at congresses:
Progress on Optimization of the Solar Cell Fabrication Process by Impurity-to-Efficiency Predictive Simulator
Year:2012
Research Areas
  • Electric engineers, electronic and automatic (eil),
  • Electronic devices,
  • Solar cells,
  • Technology of devices for engineering
Information
Abstract
To optimize the last high temperature step of a standard solar cell fabrication process (the contact cofiring step), the aluminium gettering is incorporated in the Impurity-to-Efficiency simulation tool, so that it models the phosphorus and aluminium co-gettering effect on iron impurities. The impact of iron on the cell efficiency will depend on the balance between precipitate dissolution and gettering. Gettering efficiency is similar in a wide range of peak temperatures (600-850 ºC), so that this peak temperature can be optimized favoring other parameters (e.g. ohmic contact). An industrial co-firing step can enhance the co-gettering effect by adding a temperature plateau after the peak of temperature. For highly contaminated materials, a short plateau (< 2 min) at low temperature (600 ºC) is shown to reduce the dissolved iron.
International
Si
Congress
27th European Photovoltaic Solar Energy Conference
960
Place
Frankfurt (Alemania)
Reviewers
Si
ISBN/ISSN
3-936338-28-0
10.4229/27thEUPVSEC2012-2BV.5.6
Start Date
24/09/2012
End Date
28/09/2012
From page
1347
To page
1350
Proc. 27th EU PVSEC
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física