Memorias de investigación
Communications at congresses:
Dissolution and gettering of iron during contact co-firing
Year:2011
Research Areas
  • Electronic devices,
  • Solar cells,
  • Technology of devices for engineering
Information
Abstract
The dissolution and gettering of iron is studied during the final fabrication step of multicrystalline silicon solar cells, the co-firing step, through simulations and experiments. The post-processed interstitial iron concentration is simulated according to the as-grown concentration and distribution of iron within a silicon wafer, both in the presence and absence of the phosphorus emitter, and applying different time-temperature profiles for the firing step. The competing effects of dissolution and gettering during the short annealing process are found to be strongly dependant on the as-grown material quality. Furthermore, increasing the temperature of the firing process leads to a higher dissolution of iron, hardly compensated by the higher diffusivity of impurities. A new defect engineering tool is introduced, the extended co-firing, which could allow an enhanced gettering effect within a small additional time.
International
Si
Congress
Silicon PV
960
Place
Friburgo, Alemania
Reviewers
Si
ISBN/ISSN
1876-6102
10.1016/j.egypro.2011.06.133
Start Date
17/04/2011
End Date
20/04/2011
From page
257
To page
262
Energy Procedia - Silicon PV
Participants
  • Autor: Jean Francoise Lelievre . UPM
  • Autor: J. Hofstetter
  • Autor: Ana Peral Boiza UPM
  • Autor: I. Hoces
  • Autor: F. Recart
  • Autor: Carlos del Cañizo Nadal UPM
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