Influence of the acceptor roughness on the aspect ratio of silver paste lines printed by laser-induced forward transfer

Chen, Y.; Morales, M.; Muñoz-Martín, D.; Molpeceres, C.

doi:10.1016/j.rinp.2016.11.015

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…The adhesion force F a was enhanced with the wetting process of silver paste filling onto silicon wafer. A high mechanical interlocking was formed between the silver paste and acceptor, which favored the formation of the stable bridge [16]. After contact, the bubble began to deflate as the difference between internal and external pressure decreased.…”

Section: Formation Of Single and Double Peaksmentioning

confidence: 99%

Morphological Characteristics and Printing Mechanisms of Grid Lines by Laser-Induced Forward Transfer

Zhang

Tian

et al. 2022

Metals

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Laser-induced forward transfer (LIFT) is an innovative metallization technique used in the processing of grid lines of solar cells for the photovoltaics industry. A study on the morphology and transfer mechanisms of formed lines with high-viscosity silver paste and small gap was performed in this paper. There were three different transfer states under different laser fluences: non-transferred lines or transferred but no continuous lines, continuous transferred lines, and explosive transferred lines. There was a critical transfer threshold for the continuous line transfer under different processing speeds. Higher processing speed required a larger critical transfer threshold. The line width increased as the laser fluence increased. For all continuous formed lines, the cross-sectional morphologies with single and double peaks were shown at critical and above transfer threshold, respectively. Two symmetrical protrusions with steep edges were observed for the formed line with double peaks. By comparing the silver paste remaining on the donor and transferred to the acceptor under different laser fluences, it can be found the transferred silver paste exhibited a retracting characteristic under the critical and above transfer threshold. While a stretching characteristic was obvious when the laser fluence was much higher than the transfer threshold. Morphological characteristics with single or double peaks were determined by the distance between the rupture position of the bridge and the bottom of the bubble, under the action of the axial combined forces. This work can provide insights for improving fine-line metallization and understanding transfer mechanisms in the photovoltaic application and flexible electronics devices.

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Section: Formation Of Single and Double Peaksmentioning

confidence: 99%

Morphological Characteristics and Printing Mechanisms of Grid Lines by Laser-Induced Forward Transfer

Zhang

Tian

et al. 2022

Metals

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“…The acceptor is the surface on which the fluid is deposited on the transference. Its characterization is made through its wettability and its roughness, but both parameters are typically integrated into the contact angle between the material transferred and the surface (Chen, Y. et al, 2016;Canteli et al, 2019). Other parameters may modify the characteristics of this layer, such as its permeability (Alloncle et al, 2012), but its relevance is lesser compared to those of the two first ones.…”

Section: Acceptormentioning

confidence: 99%

“…In the simplest approaches to LIFT, the acceptor substrate is just a glass slide (Fardel, Nagel, Nüesch et al, 2007;Munoz-Martin et al, 2016). Other studied substrates are coated glass slides (Fardel, Nagel, Nüesch et al, 2007), ceramic materials (Schultze and Wagner, 1991), a silicon wafer -commonly used for electronics and photovoltaics applications- (Munoz-Martin et al, 2017), or even flexible substrates (Chen, Y., Munoz-Martin et al, 2016;Sood et al, 2018;Bian et al, 2019;Han et al, 2019). LIFT techniques do not need a uniform acceptor, as other printing techniques do, so they can be used to transfer materials onto planar and non-planar substrates (Fitz-Gerald, Piqué, Auyeung et al, 2000).…”

Section: Acceptormentioning

confidence: 99%

“…The general thought behind characterizing the transferred material is to guarantee its functionality, so the range of measurable magnitudes widens for each new application. In LIFT metallization, for instance, conductivity measurements are related to the area of the cross-section (Chen, Y., Munoz-Martin et al, 2016;Sanchez-Aniorte et al, 2016). In LIFT metallization for photovoltaic applications, not only the area of the cross-section is important, but also the aspect ratio, defined as the ratio between line height and line width so that the conductive printed line covers -overshadows-as little surface as possible.…”

Section: Additional and Specific Characterization Techniquesmentioning

confidence: 99%

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Parametrization and simulation of blister-actuated laser-induced forward transfer (BA-LIFT) and LIFT for high-viscosity pastes

Labella¹

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En primer lugar, quiero empezar dando las gracias a Miguel Morales, director y tutor de esta tesis doctoral. Has sido durante estos cuatro años y medio un ejemplo de cómo hacer las cosas bien. Durante este proceso has pasado de ser un director de tesis a un compañero. Gracias por tu ayuda y por tu forma de hacernos crecer a los que estamos alrededor.Continúo con mis compañeros de trabajo, tanto en la Escuela de Industriales como en el Centro Láser. Lo bueno de estar a medio camino entre el Campus Sur y la Castellana es que me he encontrado con dos grupos maravillosos.Gracias a vosotros, compañeros de Siderurgia. A Popi y a Benito, porque fuisteis mis profesores y ahora sois mis compañeros. Gracias a ti, Miguel -el otro, Panizo, el Miguel de la Escuela-, porque vas un pasito por delante siempre, y me allanas el camino por el que voy pasando. Bueno, y además incluso empiezas a apreciar el humor de calidad. También -cómo no-a Jesús y a Yolanda, compañeros de cafés, de prácticas, y de mil ideas -metalúrgicas o no-que hacen que el laboratorio y la fundición sean casa.A Vicente y a José Carlos, que completan el núcleo de Siderurgia.

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LIFT metallization as an alternative to screen-printing for silicon heterojunction solar cells

Munoz-Garcia,

Torres,

Canteli

et al. 2024

Optics & Laser Technology

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Influence of the acceptor roughness on the aspect ratio of silver paste lines printed by laser-induced forward transfer

Cited by 4 publications

References 5 publications

Morphological Characteristics and Printing Mechanisms of Grid Lines by Laser-Induced Forward Transfer

Morphological Characteristics and Printing Mechanisms of Grid Lines by Laser-Induced Forward Transfer

Parametrization and simulation of blister-actuated laser-induced forward transfer (BA-LIFT) and LIFT for high-viscosity pastes

LIFT metallization as an alternative to screen-printing for silicon heterojunction solar cells

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