Damage reduction of the laser drilling process on back contact solar cells by chemical treatment

Cereceda, Eneko; Barredo Egusquiza, Josu; Gutierrez, José Rubén; Jimeno Cuesta, Juan Carlos; Fraile de Lerma, Alberto y Hermanns, Lutz Karl Heinz (2012). Damage reduction of the laser drilling process on back contact solar cells by chemical treatment. En: "27th European Photovoltaic Solar Energy Conference and Exhibition", 24/09/2012 - 28/09/2012, Frankfurt, Germany. pp. 832-835. https://doi.org/10.4229/27thEUPVSEC2012-2DO.2.3.

Descripción

Título: Damage reduction of the laser drilling process on back contact solar cells by chemical treatment
Autor/es:
  • Cereceda, Eneko
  • Barredo Egusquiza, Josu
  • Gutierrez, José Rubén
  • Jimeno Cuesta, Juan Carlos
  • Fraile de Lerma, Alberto
  • Hermanns, Lutz Karl Heinz
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 27th European Photovoltaic Solar Energy Conference and Exhibition
Fechas del Evento: 24/09/2012 - 28/09/2012
Lugar del Evento: Frankfurt, Germany
Título del Libro: 27th European Photovoltaic Solar Energy Conference and Exhibition
Fecha: 2012
Materias:
Palabras Clave Informales: Damage Reduction, Back Contact, Laser Processing, Etching, Texturisation
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Mecánica Estructural y Construcciones Industriales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Production of back contact solar cells requires holes generations on the wafers to keep both positive and negative contacts on the back side of the cell. This drilling process weakens the wafer mechanically due to the presence of the holes and the damage introduced during the process as microcracks. In this study, several chemical processes have been applied to drilled wafers in order to eliminate or reduce the damage generated during this fabrication step. The treatments analyzed are the followings: alkaline etching during 1, 3 and 5 minutes, acid etching for 2 and 4 minutes and texturisation. To determine mechanical strength of the samples a common mechanical study has been carried out testing the samples by the Ring on Ring bending test and obtaining the stress state in the moment of failure by FE simulation. Finally the results obtained for each treatment were fitted to a three parameter Weibull distribution

Más información

ID de Registro: 20469
Identificador DC: http://oa.upm.es/20469/
Identificador OAI: oai:oa.upm.es:20469
Identificador DOI: 10.4229/27thEUPVSEC2012-2DO.2.3
Depositado por: Memoria Investigacion
Depositado el: 26 Feb 2014 18:05
Ultima Modificación: 21 Abr 2016 23:18
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