Material requirements for the adoption of unconventional silicon crystal and wafer growth techniques for high-efficiency solar cells

Hofstetter, Jasmin and Cañizo Nadal, Carlos del and Wagner, Hannes and Castellanos, Sergio and Buonassisi, Tonio (2016). Material requirements for the adoption of unconventional silicon crystal and wafer growth techniques for high-efficiency solar cells. "Progress in Photovoltaics: Research and Applications" ; ISSN 1062-7995. https://doi.org/10.1002/pip.2699.

Description

Title: Material requirements for the adoption of unconventional silicon crystal and wafer growth techniques for high-efficiency solar cells
Author/s:
  • Hofstetter, Jasmin
  • Cañizo Nadal, Carlos del
  • Wagner, Hannes
  • Castellanos, Sergio
  • Buonassisi, Tonio
Item Type: Article
Título de Revista/Publicación: Progress in Photovoltaics: Research and Applications
Date: 2016
ISSN: 1062-7995
Subjects:
Freetext Keywords: silicon; lifetime; silicon solar cell; crystal and wafer growth techniques; defects
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física
UPM's Research Group: Silicio y Nuevos Conceptos para Células Solares
Creative Commons Licenses: None

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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.

More information

Item ID: 37803
DC Identifier: http://oa.upm.es/37803/
OAI Identifier: oai:oa.upm.es:37803
DOI: 10.1002/pip.2699
Official URL: https://onlinelibrary.wiley.com/doi/full/10.1002/pip.2699
Deposited by: Profesor Titular Carlos del Cañizo Nadal
Deposited on: 15 Sep 2015 09:54
Last Modified: 10 Jun 2019 10:51
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