Laser drilling of solar cells
Abstract Transparent solar cells (TSCs) hold promise for applications in building-integrated photovoltaics (BIPVs) and vehicles. ... An Organic-Si Hybrid Achieved by Laser Microhole Drilling Ngoc Thanh Ho, Ngoc Thanh Ho …
Novel Approach to Color-Neutral Transparent Solar Cells: An Organic-Si Hybrid Achieved by Laser Microhole Drilling …
Abstract Transparent solar cells (TSCs) hold promise for applications in building-integrated photovoltaics (BIPVs) and vehicles. ... An Organic-Si Hybrid Achieved by Laser Microhole Drilling Ngoc Thanh Ho, Ngoc Thanh Ho …
(PDF) Systematic Optimisation of Process Parameters in Laser …
In this paper we demonstrate high-speed laser drilling of 50 μm through-vias into 200 μm thick monocrystalline silicon wafers for PV cells. This is required as …
Impact of Laser Hole Drilling on the Fracture Strength of Metal Wrap-Through (MWT) Solar Cells
We have measured the fracture strength of multi-crystalline silicon (mc-Si) wafers to investigate the possible effect of laser hole drilling on the breakage rate of metal wrap-through (MWT) solar cells. Groups of solar wafers with 0, 100, and 300 holes (130 μm diameter) were prepared using a UV Q-switched laser. For each group, half of the …
Laser Technology in Photovoltaics
Solar energy is indispensable to tomorrow´s energy mix. To ensure photovoltaic systems are able to compete with conventional fossil fuels, production costs of PV modules must be reduced and the efficiency of …
Laser Drilling
Laser drilling is a well-established industrial laser application that can produce both blind and through holes in metals and non-metals. ... G. Mueller, H. Herfurth, K. Bui, "Laser drilling up to 15,000 holes/sec in silicon wafer for PV solar cells", SPIE Optics + Photonics, San Diego, CA, Aug 26-29, 2013; Laser drilling up to 15,000 holes ...
Laser drilling up to 15,000 holes/sec in silicon wafer for PV solar cells …
Request PDF | Laser drilling up to 15,000 holes/sec in silicon wafer for PV solar cells | One approach to realize a back contact solar cell design is to ''wrap'' the front contacts to the ...
(PDF) Systematic Optimisation of Process Parameters in Laser Drilling …
In this paper we demonstrate high-speed laser drilling of 50 μm through-vias into 200 μm thick monocrystalline silicon wafers for PV cells. This is required as process step for MWT ...
Damage Reduction of the Laser Drilling Process on Back Contact Solar Cells …
DAMAGE REDUCTION OF THE LASER DRILLING PROCESS ON BACK CONTACT SOLAR CELLS BY CHEMICAL TREATMENT Eneko Cereceda 1, Josu Barredo 2, José Rubén Gutiérrez, Juan Carlos Jimeno 1, Alberto Fraile 3 and Lutz Hermanns 3 1Instituto de Tecnología Microelectrónica (TiM), University of the Basque Country UPV/EHU ...
Laser drilling up to 15,000 holes/sec in silicon wafer for PV solar cells
One approach to realize a back contact solar cell design is to `wrap'' the front contacts to the backside of the cell [1]. This results in significantly reduced shadowing losses, possibility of simplified module assembly process and reduced resistance losses in the module; a combination of measures, which are ultimately expected to lower the cost per watt of PV …
Laser processing of materials for renewable energy applications
Influence of front surface single-pulse laser drilling on a bifacial solar cell determined through simulation and experiment. Optical and Quantum Electronics, Vol. 53, Issue. 4, Optical and Quantum Electronics, Vol. 53, Issue. 4,
Optimizing process time of laser drilling processes in solar cell manufacturing by coaxial camera control …
In emitter wrap through (EWT) solar cells, laser drilling is used to increase the light sensitive area by removing emitter contacts from the front side of the cell. For a cell area of 156 x 156 mm<sup>2</sup>, about 24000 via-holes with a diameter of 60 μm have to be drilled into silicon wafers with a thickness of 200 μm. The processing time …
High-speed Laser Drilling of EWT/MWT Vias for Backcontact Solar Cells
Crystalline Si cells clearly dominate world production with a market share of ~77%. So there is much pressure for cost reduction in this market because production volume is very attractive and growing. Metal-wrap-through (MWT) is appealing, but drilling at high speeds faces some challenges.
Optimizing process time of laser drilling processes in solar cell …
In emitter wrap through (EWT) solar cells, laser drilling is used to increase the light sensitive area by removing emitter contacts from the front side of the cell. For a cell area of 156 ...
Silicon back contact solar cell configuration: A pathway towards …
Require laser drilling and alignment. Fine pitch of emitter and base is required. Required fine alignment ... Sojka B, Robbelein J, Singh S, Janssens T, Das J, et al. Industrial integration of interdigitated back-contact Si …
FOCUS: LASER MICRO PROCESSING Laser Applications in …
The fundamental process of most laser struc-turing applications on solar cells is the direct laser-induced vaporization and melt ejection by nanosecond laser pulses.
High-speed laser drilling of EWT/MWT vias for backcontact …
Close High-speed laser drilling of EWT/MWT vias for backcontact solar cells Klaus Stolberg, Susanna Friedel, Jenoptik Laser GmbH, Jena, Germany Observing the PV market today, we are faced with two ...
Femtosecond laser drilling of crystalline and multicrystalline …
In this research, a femtosecond laser is em- ployed to drill via holes in both crystalline silicon (c-Si) and multicrystalline silicon (mc-Si) thin wafers of ∼170 µm thickness with …
Damage Reduction of the Laser Drilling Process on Back Contact Solar Cells …
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 …
Laser Micro Soldering Micro Drilling for MWT and EWT
production costs as well as to higher efficiency of solar cells and modules and even new cell concepts. 0 5 10 15 20 25 30 35 40 45 50 55 60 250 350 450 550 650 750 850 950 1050 1150 1250 ...
Femtosecond laser drilling of crystalline and multicrystalline …
Femtosecond laser drilling of crystalline and multicrystalline silicon for advanced solar cell fabrication 115 Fig. 1 A schematic diagram of the femtosecond laser drilling and ob- servation Fig. 2(b), demonstrating the increasing trend of the effective
Damage reduction of the laser drilling process on back contact solar ...
Laser processes in solar cells are the origin of a considerable mechanical and electrical damage. This paper introduces a model that presents a good fitting to the laser-induced damage, previously ...
Precise selective scribing of thin-film solar cells by a picosecond laser
In this paper, precise scribing of thin-film solar cells (CIGS/Mo/Glass) via a picosecond laser is investigated. A parametric study is carried out for P1 and P2 scribing to study the effects of laser fluence and overlap ratio on scribing quality and ablation depth. Three ablation regimes are observed for P1 scribing in different laser fluence ranges, due …
Laser via drilling technology for the EWT solar cell | Request PDF …
Laser drilling of vias is the one of key technologies in developing Emitter-Wrap Through(EWT) solar cell which is particularly attractive due to the use of industrial processing and ...
Laser via drilling technology for the EWT solar cell
Laser drilling of vias is the one of key technologies in developing Emitter-Wrap Through(EWT) solar cell which is particularly attractive due to the use of industrial processing and common solar ...
Laser drilling up to 15,000 holes/sec in silicon wafer for PV solar cells
One approach to realize a back contact solar cell design is to ''wrap'' the front contacts to the backside of the cell [1]. This results in significantly reduced shadowing losses, possibility of simplified module assembly process and reduced resistance losses in the module; a combination of measures, which are ultimately expected to lower the cost per watt of PV …
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