Photovoltaic cell back laser grooving
A numerical study of picosecond laser micro-grooving of single crystalline germanium: Mechanism discussion and process simulation …
In ps laser micro-grooving process, multi-scanning may be necessary depending on the groove depth required, and hence the actual groove formation is the accumulated results of many laser pulses. Fig. 12 (a) shows the groove depth increase with respect to laser pulse number in a two times laser scanning simulation case.
Laser-Induced Surface Modification for Photovoltaic Device
Laser drilling and grooving have been used for solar cell device fabrication. Figure 18 (Bruton et al. 2003 ) shows a schematic of a solar cell device fabricated by a laser buried contact process. A metal contact is plated inside the groove, allowing high-efficiency solar cells.
Laser Scribing of Photovoltaic Solar Thin Films: A …
The development of thin-film photovoltaics has emerged as a promising solution to the global energy crisis within the field of solar cell technology. However, transitioning from laboratory scale to large-area solar cells …
Fully Passivating Contact IBC Solar Cells Using Laser Processing
A novel approach for interdigitated back contacted (IBC) solar cell production featuring polycrystalline silicon on interfacial oxide (poly-Si/SiOx) passivating contacts on both polarities is ...
CN212783465U
The utility model discloses a two-sided solar cell back of body laser fluting structure of back passivation, including a plurality of laser fluting of distributing on the battery back side by side, every laser fluting is for being by the double-line fluting of same strip aluminium grid line cover. The utility model designs two slots under any aluminum grid line without …
Advanced passivation of laser-doped and grooved solar cells
A new laser grooving process that simultaneously dopes the groove walls has been developed. ... 23.2% laser processed back contact solar cell: fabrication, characterization and modeling. Prog. Photovolt.: Res. Appl., 25 (2017), pp. 192-200. View in Scopus Google Scholar [18]
Simple fabrication of back contact heterojunction solar cells …
Heterojunction back-contact (HBC) solar cells have exhibited the highest conversion efficiency among crystalline-silicon (c-Si) solar cells, owing to the low surface recombination velocity and no shadowing loss of front electrodes.1–3) However, the cost of fabricating of HBC solar cells is not very low, since back electrodes are usually ...
Pulsed Laser Grooving of Silicon Under Different Ambient Media
Purpose In the context of MEMS and solar cell applications, the precise fabrication of high-quality grooves is of paramount importance. This paper investigates the influence of ambient media on the surface characteristics and groove quality during the laser grooving of silicon. Method The experiments involved the use of a 532 nm green laser …
(PDF) Laser Processing of Solar Cells
This paper describes the design and the development of laser edge isolation (LEI) system for Si solar cells. It consists of a Q-switched 532 nm Nd:YVO4 laser source, an optical set up, a system ...
PV Developments PV processing: Improved PV-cell scribing using water jet guided laser …
Recently, the water jet guided laser technology has also been used for edge isolation of PV cells, which is performed, like with conventional lasers, by grooving the cell close to its edge. The process achieves high groove quality, generating no thermal or mechanical damages to the material and significantly reducing contamination.
Laser processing of solar cells
Recently, a number of manufacturers have been developing new generations of solar cells where they use laser ablation of dielectric layers to form selective emitters or passivated rear point contacts. Others have been utilizing lasers to drill holes through the silicon wafers for emitter-wrap-through or metal-wrap-through back-contact …
Laser processing of solar cells
Laser processing has a long history in the manufacturing of solar cells since most thin-film photovoltaic modules have been manufactured using laser scribing for more than thirty years. Lasers have also been used by many solar cell manufacturers for a variety of applications such as edge isolation, identification marking, laser grooving for …
Enhancing Efficiency of Luminescent Solar Concentrators through Laser Grooving …
Research Article Enhancing Efficiency of Luminescent Solar Concentrators through Laser Grooving Techniques Haider Mayoof Matrood,1,2 Sohrab Ahmadi-Kandjani,1,3,4 and Asghar Asgari 1,3,4 1Faculty of Physics, University of Tabriz, Tabriz, Iran 2Directorate of Material Research, Ministry of Science and Technology, Baghdad, Iraq ...
PHOTOVOLTAICS: Laser processing yields solar cells with 22
Researchers at the Institut für Solarenergieforschung Hameln (ISFH; Emmerthal, Germany) have developed a solar-cell manufacturing sequence called rear-interdigitated single evaporation (RISE) for Si back-contacted solar cells based on laser processes that has pushed conversion efficiency up to 22%.
(PDF) Laser Processing of Solar Cells
Nowadays, development in laser technology and laser processing becomes a promising tool for mass production of different types of solar cells [1,2]. This covers a wide range of applications in the ...
Advanced passivation of laser-doped and grooved solar cells
The laser doping and grooving (LDG) technique create a selective emitter and narrow grooves in one simultaneous laser step. Such a process combines the performance and reliability benefits of buried contact solar cells (BCSC''s) with the simplicity and cost-effectiveness of laser doped selective emitter (LDSE) cells.
US4626613A
Grooved solar cells are manufactured by scribing the surface of the substrate with a laser scribing tool, and optionally etching the surface to more accurately determine the surface profile, before performing the remainder of the processing steps involved in the production of the solar cell. Top contact shading is avoided by providing holes through the substrate …
Process sequences for lithography, laser grooving and printed …
Download scientific diagram | Process sequences for lithography, laser grooving and printed contacts. from publication: Metallization of crystalline silicon solar cells: A review | Metallization ...
CN219419046U
The application relates to a solar cell, a photovoltaic module and a laser grooving graph, wherein the solar cell comprises a silicon wafer, a passivation layer is arranged on a first side surface of the silicon wafer, and adjacent back electrodes and grooving areas are arranged on the surface of the passivation layer; a plurality of convex structures …
A study on co-axial water-jet assisted fiber laser grooving of silicon
Potential of fiber laser grooving in silicon has been investigated with continuous wave beam and modulated beam of micro-second durations. Though silicon shows considerably high transparency for the utilized laser wavelength (1.07 μm), due to the increase of absorption coefficient with temperature its micro-machining is feasible with …
Analysis of the Operation of Laser Grooved Silicon Solar Cell
A significant improvement in the performance of Silicon solar cells has been achieved in recent years with the so-called laser grooved cell /1/. In these cells, the top contact is formed within deep grooves, formed on the cell surface by laser ablation. This cell...
XBC solar cell technology process
Back Contact, metal electrodes are arranged on the back of the solar cell in a cross-finger shape, ... Transparent conductive film (back) 11 Laser grooving (P/N separation) 12 Metallization Previous Large-area perovskite-silicon tandem PV solar cell Next ...
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