Thin silicon solar cells: Pathway to cost-effective and defect-tolerant cell design

Augusto, André and Looney, Erin and Cañizo Nadal, Carlos del and Bowden, Stuart G. and Buonassisi, Tonio (2017). Thin silicon solar cells: Pathway to cost-effective and defect-tolerant cell design. "Energy Procedia" (n. 124); pp. 706-711. ISSN 1876-6102. https://doi.org/10.1016/j.egypro.2017.09.346.

Description

Title: Thin silicon solar cells: Pathway to cost-effective and defect-tolerant cell design
Author/s:
  • Augusto, André
  • Looney, Erin
  • Cañizo Nadal, Carlos del
  • Bowden, Stuart G.
  • Buonassisi, Tonio
Item Type: Article
Título de Revista/Publicación: Energy Procedia
Date: 2017
ISSN: 1876-6102
Subjects:
Freetext Keywords: Thin silicon, solar cells, defect, heterojunction
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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 µm-thick cells perform better than 170 µm-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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainENE2014-56069-C4-2-RTABACO projectUnspecifiedUnspecified
Madrid Regional GovernmentS2013/MAE-2780MADRID-PVUnspecifiedUnspecified

More information

Item ID: 50148
DC Identifier: http://oa.upm.es/50148/
OAI Identifier: oai:oa.upm.es:50148
DOI: 10.1016/j.egypro.2017.09.346
Official URL: https://www.sciencedirect.com/science/article/pii/S1876610217343175
Deposited by: Memoria Investigacion
Deposited on: 01 May 2018 14:26
Last Modified: 01 May 2018 14:26
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