Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Material requirements for the adoption of unconventional silicon crystal and wafer growth techniques for high-efficiency solar cells
Year:2016
Research Areas
  • Silicon,
  • Solar cells
Information
Abstract
Silicon wafers comprise approximately 40% of crystalline silicon module cost and represent an area of great technological innovation potential. Paradoxically, unconventional wafer-growth techniques have thus far failed to displace multicrystalline and Czochralski silicon, despite four decades of innovation. One of the shortcomings of most unconventional materials has been a persistent carrier lifetime deficit in comparison to established wafer technologies, which limits the device efficiency potential. In this perspective article, we review a defect-management framework that has proven successful in enabling millisecond lifetimes in kerfless and cast materials. Control of dislocations and slowly diffusing metal point defects during growth, coupled to effective control of fast-diffusing species during cell processing, is critical to enable high cell efficiencies. To accelerate the pace of novel wafer development, we discuss approaches to rapidly evaluate the device efficiency potential of unconventional wafers from injection-dependent lifetime measurements.
International
Si
JCR
Si
Title
Progress in Photovoltaics
ISBN
1062-7995
Impact factor JCR
9,696
Impact info
Volume
24
10.1002/pip.2699
Journal number
1
From page
122
To page
132
Month
SIN MES
Ranking
Participants
  • Autor: J. Hofstetter
  • Autor: Carlos del Cañizo Nadal (UPM)
  • Autor: H. Wagner
  • Autor: S. Castellanos
  • Autor: T. Buonassisi
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
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)