Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Lifetime improvement after phosphorous diffusion gettering on upgraded metallurgical grade silicon
Year:2014
Research Areas
  • Solar cells,
  • Technology of devices for engineering
Information
Abstract
Wide experimental evidence of the phosphorus diffusion gettering beneficial effect on solar grade silicon is found by measuring electron effective lifetime and interstitial iron concentration in as-grown and post-processed samples from two ingots of upgraded metallurgical grade silicon produced by Ferrosolar. Results after two different P-diffusion processes are compared: P emitter diffusion at 850 °C followed by fast cool-down (called ?standard process?) or followed by slow cool-down (called ?extended process?). It is shown that final lifetimes of this low cost material are in the range of those obtained with conventional material. The extended process can be beneficial for wafers with specific initial distribution and concentration of iron, e.g. materials with high concentration of big Fe precipitates, while for other cases the standard process is enough efficient. An analysis based on the comparison of measured lifetime and dissolved iron concentration with theoretical calculations helps to infer the initial iron distribution and concentration, and according to that, choose the more effective type of gettering.
International
Si
JCR
Si
Title
Solar Energy Materials And Solar Cells
ISBN
0927-0248
Impact factor JCR
5,03
Impact info
Volume
130
Journal number
From page
686
To page
689
Month
SIN MES
Ranking
Participants
  • Autor: Ana Peral Boiza (UPM)
  • Autor: J.M. Míguez
  • Autor: R. Ordás
  • Autor: Carlos del Cañizo Nadal (UPM)
  • Autor: Manuel Miguez Fernandez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Departamento: Electrónica Física
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Ingeniería Civil: Hidráulica y Ordenación del Territorio
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)