Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Thin silicon solar cells: Pathway to cost-effective and defect-tolerant cell design
Year:2017
Research Areas
  • Silicon,
  • Solar cells
Information
Abstract
(Proc. 7th International Conference on Silicon Photovoltaics, SiliconPV 2017) Thinner silicon wafers are a pathway to lower cost without compromising the efficiency of solar cells. In this work, we study the recombination mechanism for thin and thick silicon heterojunction solar cells, and we discuss the potential of using more defective material to manufacture high performance thin solar cells. Modelling the performance of silicon heterojunction solar cells indicates that at open-circuit voltage the recombination is dominated by Auger and surface, representing nearly 90% of the total recombination. At maximum power point, the surface is responsible for 50 to 80% of the overall recombination, and its contribution increases inversely with the wafer thickness. The experimental results show that for lower quality CZ material with 1 ms bulk lifetime, 60 mm-thick cells perform better than 170 mm-thick cells. The potential efficiency gain is 1% absolute. The gains in voltage of using thinner wafers are significantly higher for the lower quality CZ material, 25 mV, than for standard CZ material, 10 mV.
International
Si
JCR
No
Title
Energy Procedia
ISBN
1876-6102
Impact factor JCR
Impact info
Volume
124
10.1016/j.egypro.2017.09.346
Journal number
From page
706
To page
711
Month
SIN MES
Ranking
Participants
  • Autor: A. Augusto
  • Autor: E. Looney
  • Autor: Carlos del Cañizo Nadal (UPM)
  • Autor: S.G. Bowden
  • Autor: T. Buonassisi
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física, Ingeniería Eléctrica y Física Aplicada
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)