Lisa Risch

ESR 4.1 Lisa Risch – PhD student at NEXCIS

She obtained her Master degree in Physics from the Freie Universität Berlin in 2013. Within the framework of the Erasmus students exchange program she spent one year in Granada, Spain during her studies. Thanks to the collaboration between the Freie Universität and the Helmholtz-Zentrum Berlin she was offered the opportunity to carry out her Bachelor thesis in the group of Solar Energy Research at the Helmholtz Zentrum. She continued working at the Helmholtz Zentrum as students research assistant and then decided to undertake her Master’s thesis there. The Master thesis’ central topic was the characterization of TCO/CuInSe2-interfaces under the influence of high deposition temperatures. This implied surface analysis and depth profiling using different X-ray spectroscopy methods, partly undertaken at the electron storage ring BESSY-II.

Within the KESTCELLS project, her tasks are the characterization of kesterite solar cells and the identification of suitable methods for quality control in industrial fabrication processes. So far, she has mainly focused on Photoluminescence and Raman Spectroscopy, two techniques that are particularly suitable for fast and non-destructive quality assessment.

Papers:

L.Vauche, L. RISCH, Y. Sánchez, M. DIMITRIEVSKA, M. Pasquinelli, T. Goislard de Monsabert, P.-P. Grand, S. Jaime-Ferrer, E. Saucedo, “8.2% Cu2ZnSnSe4 thin film solar cells from large area electrodeposited precursors,” Prog. Photovolt. Res. Appl., vol. 24, issue 1, p. 38-51 (2016). DOI: 10.1002/pip.2643

L.Vauche, L.RISCH, M. Arasimowicz, Y. Sánchez, E. Saucedo, M. Pasquinelli, T. Goislard, P.-P. Grand, S. Jaime-Ferrer, Detrimental effect of Sn-rich secondary phases on Cu2ZnSnSe4 based solar cells. Journal of Renewable and Sustainable Energy, Vol. 8, Issue 3 (2016). DOI: 10.1063/1.4953026

Conferences:

L. Vauche, L. Risch, C.M. Ruiz, T. Goislard de Monsabert, S. Jaime, S. Bodnar, P.-P. Grand, M. Pasquinelli, J.-J. Simon, “Photoluminescence studies of kesterite Cu2ZnSnSe4 thin film solar cells”, Presented at 4th Kesterite meeting. Berlin, Germany, 2013. (Oral).

L. Vauche, L. Risch, E. Saucedo, C.M. Ruiz, M. Pasquinelli, J.-J. Simon, T. Goislard de Monsabert, S. Jaime, P.-P. Grand: “6.9% Cu2ZnSnSe4 Thin Film Solar Cells from electrodeposited precursors.” V European Kesterite Workshop Tallinn, Estonia; November 2014 (oral)

L. Risch, L. Vauche, A. Redinger, M. Dimitrievska, Y. Sánchez, E. Saucedo, T. Unold, T. Goislard de Monsabert, C.M. Ruiz, J.-J. Simon:”Overcoming the VOC limitation on CZTSe solar cells”, Presented at 43 IEEE PVSC Portland, USA; June 2016 (oral)

L. Risch, L. Vauche, A. Redinger, M. Dimitrievska, Y. Sánchez, E. Saucedo, T. Unold, T. Goislard, C.M. Ruiz, L. Escoubas, J.J. Simon, Overcoming the Voc limitation of CZTSe solar cells”, Presented at IEEE PVSC. Portland, USA, 2016. (Oral).

L. Vauche, L. Risch, Y. Sánchez, E. Saucedo, M. Pasquinelli, T. Goislard, P.-P. Grand, S. Jaime, “Low-cost high-efficiency CZTSe kesterite thin film solar cells by electrodeposition processes , ” Presented at PVTC – Photovoltaic Technical conference. Marseille, France, 2016. (Oral).

L. Risch, L. Vauche, V. Izquierdo-Roca, A. Redinger, C.M. Ruiz, T. Unold, T. Goislard, L. Escoubas, J.J. Simon, “Detection of inhomogeneities in CZTSe absorbers and their impact on device performance. Presented at Marseille, France, 2016. (Flash-Talk & Poster).

L. Risch, L. Vauche, M. Dimitrievska, C.M. Ruiz, E. Saucedo, V. Izquierdo-Roca, T. Goislard, J.J. Simon, “The impact of CZTSe absorber composition on the formation of secondary phases and point defects”, Presented at Aix-en-Provence, France, 2015. (Flash-Talk & Poster).

L. Vauche, L. Risch, E. Saucedo, M. Pasquinelli, T. Goislard, S. Jaime, P.-P. Grand, “Detrimental effect of Sn-rich secondary phases on Cu2ZnSnSe4 based solar cells”, Presented at PVTC – Photovoltaic Technical conference, Aix-en-Provence, France, 2016. (Oral).

L. Risch, L. Vauche, M. Dimitrievska, E. Saucedo, C.M. Ruiz, J.J. Simon, T. Goislard, “The effect of absorber composition and secondary phases on the opto-electronic properties of Cu2ZnSnSe4 devices”, Presented at EMRS spring meeting 2015. Lille, France, 2014. (Poster).

L. Risch, L. Vauche, J.J. Simon, C.M. Ruiz, T. Goislard, “Study on secondary phases of the kesterite Cu2ZnSnSe4″, Presented at 5th European Kesterite workshop. Tallinn, Estonia, 2014. (Poster)

L. Vauche, L. Risch, M. Pasquinelli, T. Goislard, S. Jaime, P.-P. Grand, S. Lopez-Marino, M. Espindola-Rodriguez, Y. Sánchez, E. Saucedo, “6.9% 8.2% Cu2ZnSnSe4 thin film solar cells from electrodeposited precursors”, Presented at 5th European Kesterite workshop. Tallinn, Estonia, 2014. (Oral)

L. Vauche, L. Risch, Y. Sánchez, M. Pasquinelli, T. Goislard, P.-P. Grand, S. Jaime-Ferrer, E. Saucedo, “8.2% Cu2ZnSnSe4 based thin film solar cell from large area electrodeposited precursors”, Presented at MRS Spring Meeting. San Francisco, USA, 2015. (Oral).

L. Risch, L. Vauche, C.M. Ruiz, J.J. Simon, T. Goislard, “Photoluminescence studies on kesterite materials”, Presented at 2nd French Meeting on Kesterite solar cells. Grenoble, France, 2014. (Oral).