From PV to bio: Surviving the photovoltaic bubble at laser centre UPM

Abstract Laser Centre UPM is one of the leading Research Centers in Spain in the field of industrial applications of high power lasers. Founded in 1998 in the oldest and largest Spanish Technical University, Universidad Politecnica de Madrid, its activity is focused in technological transfer of laser-based processes to industry. With an important experience in laser micromachining using fast and ultrafast lasers, one of the fields in which its activity has produced more relevant results is laser process development for photovoltaic (PV) industry. Starting in 2004, its activity in this field in collaboration with other public Spanish institutions and other industrial partners has had a remarkable scientific and technological impact. Unfortunately, this activity was seriously restricted since 2010 due to the economic crisis in general and the photovoltaic industry evolution in particular. However, the background acquired in some particular applications and the inertia obtained with that activity has opened new fields of activity of Laser Center UPM in advanced laser-based processes for biomedicine. This paper summarizes the main achievements of Laser Center UPM in PV and how it performed the transition to new applications in a completely different sector, like biomedicine, using the experienced accumulated in the development of new laser based processes for PV.

[1]  R. Barrio,et al.  Optimization of laser-firing processes for silicon-heterojunction solar-cell back contacts , 2012 .

[2]  C. Voz,et al.  Fully low temperature interdigitated back-contacted c-Si(n) solar cells based on laser-doping from dielectric stacks , 2017 .

[3]  J. J. García-Ballesteros,et al.  Selective ablation with UV lasers of a-Si:H thin film solar cells in direct scribing configuration , 2011 .

[4]  M. I. Sánchez-Aniorte,et al.  Investigation on the structural changes of ZnO:Er:Yb thin film during laser annealing to fabricate a transparent conducting upconverter , 2017 .

[5]  C. Molpeceres,et al.  Laser-Induced Forward Transfer Techniques and Applications , 2018 .

[6]  M. I. Sánchez-Aniorte,et al.  Analysis by Finite Element Calculations of Light Scattering in Laser-textured AZO Films for PV thin-film Solar Cells , 2015 .

[7]  Carlos Molpeceres,et al.  Silicon PV module customization using laser technology for new BIPV applications , 2014, Optics & Photonics - Solar Energy + Applications.

[8]  José Luis Ocaña,et al.  Advanced 3D micromachining techniques using UV laser sources , 2007 .

[9]  J. J. Gandía,et al.  Characterization of direct- and back-scribing laser patterning of SnO2:F for a-Si:H PV module fabrication , 2013 .

[10]  Maria Losurdo,et al.  Parameterization of a-Si crystallization by continuous-wave green laser irradiation: from single spot to large area , 2015 .

[11]  Jordi Andreu,et al.  New techniques for laser microprocessing of photovoltaic devices based on thin-film a-Si:H , 2007 .

[12]  J. J. García-Ballesteros,et al.  Selective ablation of photovoltaic materials with UV laser sources for monolithic interconnection of devices based on a-Si:H , 2009 .

[13]  José Luis Ocaña,et al.  Microprocessing of ITO and a-Si thin films using ns laser sources , 2005 .

[14]  C. Voz,et al.  Laser‐fired contact optimization in c‐Si solar cells , 2012 .

[15]  C. Voz,et al.  Parameterization of local laser doping and laser-fired contacts for high efficiency c-Si solar cells , 2012 .

[16]  C. Arnold,et al.  Laser-induced forward transfer of high-viscosity silver pastes , 2016 .

[17]  C. Voz,et al.  Study of the Surface Recombination Velocity for Ultraviolet and Visible Laser-Fired Contacts Applied to Silicon Heterojunction Solar Cells , 2015, IEEE Journal of Photovoltaics.

[18]  J. Ocaña,et al.  Study of the refractive index change in a-Si:H thin films patterned by 532 nm laser radiation for photovoltaic applications , 2010 .