CIGS P1, P2, and P3 laser scribing with an innovative fiber laser

Murison, R.; Dunsky, Corey M.; Rekow, M.; Dinkel, C.; Pern, J.; Mansfield, Lorelle M.; Panarello, T.; Nikumb, Suwas

doi:10.1109/pvsc.2010.5614550

Cited by 15 publications

(12 citation statements)

References 9 publications

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“…[30] There are, however, some drawbacks for this patterning solution. [43] First of all, since the scribing has been executed in inert atmosphere, the implementation in a production line could present an implementation and most probably in addition a cost issue. Additionally, the micro blade directly enters in contact with the devices causing mechanical stress within the substrate and most probably the formation of abraded particulates, some of which possibly remain attached to the blade, influencing the subsequent blade passes.…”

Section: Index Terms-perovskites Solar Cells Laser Processing Solarmentioning

confidence: 99%

Laser-Patterning Engineering for Perovskite Solar Modules With 95% Aperture Ratio

Palma

Matteocci

Agresti

et al. 2017

IEEE J. Photovoltaics

131

129

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Small area hybrid organometal halide perovskite\ud based solar cells reached performances comparable to the multicrystalline\ud silicon wafer cells. However, industrial applications\ud require the scaling-up of devices to module-size. Here, we report\ud the first fully laser-processed large area (14.5 cm2) perovskite solar\ud module with an aperture ratio of 95% and a power conversion\ud efficiency of 9.3%. To obtain this result, we carried out thorough\ud analyses and optimization of three laser processing steps required\ud to realize the serial interconnection of various cells. By analyzing\ud the statistics of the fabricated modules, we show that the error\ud committed over the projected interconnection dimensions is sufficiently\ud lowto permit even higher aperture ratios without additional\ud efforts

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Section: Index Terms-perovskites Solar Cells Laser Processing Solarmentioning

confidence: 99%

Laser-Patterning Engineering for Perovskite Solar Modules With 95% Aperture Ratio

Palma

Matteocci

Agresti

et al. 2017

IEEE J. Photovoltaics

131

129

View full text Add to dashboard Cite

show abstract

“…In practice, photocurrent is decreased by scribing the solar module into a large number (between 100 and 200) mini-modules and connecting them in series to create high-voltage, low-current devices [3]. Since each layer in the solar module must be scribed after deposition, scribing is performed in 3 steps -Patterns 1, 2 and 3 (P1, P2 and P3) processes, which are also used in the commercial production of a-Si:H (hydrogenated amorphous silicon) and CI(G)S (copper indium gallium selenide) based thin film solar cell fabrications [4][5][6]. Compared to mechanical scribing, key advantage of laser scribing is able to enable much smaller line width (50μm Vs. 500μm), so the "dead zone" can be much smaller with higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…These lasers are complex and expensive, and regardless of pulse duration, material melting cannot be totally eliminated [5]. Glass side laser processing [10][11] has been shown to be more efficient than film side processing with reduced thermal effect.…”

Section: Introductionmentioning

confidence: 99%

Removal Mechanism and Defect Characterization for Glass-Side Laser Scribing of CdTe/CdS Multilayer in Solar Cells

Wang

Yao

Chen

2015

Journal of Manufacturing Science and Engineering

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Laser scribing is an important manufacturing process used to reduce photocurrent and resistance losses and increase solar cell efficiency through the formation of serial interconnections in large-area solar cells. High-quality scribing is crucial since the main impediment to large-scale adoption of solar power is its high production cost (price-per-watt) compared to competing energy sources such as wind and fossil fuels. In recent years, the use of glass-side laser scribing processes has led to increased scribe quality and solar cell efficiencies, however, defects introduced during the process such as thermal effect, micro cracks, film delamination, and removal uncleanliness keep the modules from reaching their theoretical efficiencies. Moreover, limited numerical work has been performed in predicting thin film laser removal processes. In this study, a nanosecond (ns) laser with a wavelength at 532nm is employed for pattern 2 (P2) scribing on CdTe (Cadmium telluride) based thin-film solar cells. The film removal mechanism and defects caused by laser-induced micro-explosion process are studied. The relationship between those defects, removal geometry, laser fluences and scribing speeds are also investigated. Thermal and mechanical numerical models are developed to analyze the laser-induced spatio-temporal temperature and pressure responsible for film removal. The simulation can well-predict the film removal geometries, generation of micro cracks, film delamination and remaining materials. The characterization of removal qualities will enable the process optimization and design required to enhance solar module efficiency.

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“…One of the most important manufacturing processes in the fabrication of thin film solar cells is monolithic cell isolation and series interconnection. These P1, P2 and P3 processes are also used in the commercial production of a-Si and CIGS (CuInGaSe 2 ) [3][4][5]. Interconnects must have low series resistance and high shunt resistance, and produce a minimum dead area between cells.…”

Section: Introductionmentioning

confidence: 99%

“…These lasers are complex and expensive, and regardless of pulse duration, material melting cannot be totally eliminated [4]. Glass side processing [8][9] has been shown to be more efficient than laser processing from the film side with reduced thermal effect.…”

Section: Introductionmentioning

confidence: 99%

Predictive Modeling for Glass-Side Laser Scribing of Thin Film Photovoltaic Cells

Wang¹,

Hsu²,

Tan³

et al. 2013

Journal of Manufacturing Science and Engineering

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Laser scribing of multilayer thin films is an important process for producing integrated serial interconnection of minimodules, used to reduce photocurrent and resistance losses in a large-area solar cell. Quality of such scribing contributes to the overall quality and efficiency of the solar cell and therefore predictive capabilities of the process are essential. Limited numerical work has been performed in predicting the thin film laser removal processes. In this study, a sequentially-coupled multilayer thermal and mechanical finite element model is developed to analyze the laser-induced spatio-temporal temperature and thermal stress responsible for SnO 2 :F film removal. A plasma expansion induced pressure model is also investigated to simulate the non-thermal film removal of CdTe due to the micro-explosion process. Corresponding experiments on SnO 2 :F films on glass substrates by 1064nm ns laser irradiation show a similar removal process to that predicted in the simulation. Differences between the model and experimental results are discussed and future model refinements are proposed. Both simulation and experimental results from glass-side laser scribing show clean film removal with minimum thermal effects indicating minimal changes to material electrical properties.

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CIGS P1, P2, and P3 laser scribing with an innovative fiber laser

Cited by 15 publications

References 9 publications

Laser-Patterning Engineering for Perovskite Solar Modules With 95% Aperture Ratio

Laser-Patterning Engineering for Perovskite Solar Modules With 95% Aperture Ratio

Removal Mechanism and Defect Characterization for Glass-Side Laser Scribing of CdTe/CdS Multilayer in Solar Cells

Predictive Modeling for Glass-Side Laser Scribing of Thin Film Photovoltaic Cells

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