Effect of laser parameters and post-texturing treatments on the optical and electrical properties of laser textured c-Si wafers

Radfar, Behrad; Es, Firat; Nasser, Hisham; Akdemir, Ozan; Bek, Alpan; Turan, Raşit

doi:10.1063/1.5049298

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…In conjunction with that, more light is trapped at a high pulsed laser power of 102 W due to more depth holes being created to shorten carriers' travel. Laser texturization on Si wafers shows a significantly low reflectance that significantly increases the absorption of incident solar radiation [28], [29].…”

Section: Resultsmentioning

confidence: 99%

“…The fundamental properties of carbon in n-Si can be used to quickly identify the root cause of the contamination in production environment which is also comes from melted silicon from laser texturing at high power. Carbon distribution and precipitation on Si comes from unknown reaction rate in the Si melt [28]. Furthermore, laser texturing enhances solar cell efficiency by improving light trapping and reducing recombination, outperforming traditional methods, especially when combined with potassium hydroxide etching, while ultrafast laser processing shows promise in advancing photovoltaics, albeit with ongoing research needed for hyperdoping [28], [40], [43]- [45].…”

Section: Figure 6 Ir Transmission On (A) 1 MM (B) 2 Mm (C) 3 Mm (D) 4...mentioning

confidence: 99%

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Impact of Infrared Pulsed Laser on Passivated-Textured Silicon Wafers

Rais,

Sinin,

Hamid

et al. 2024

Preprint

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A textured surface on a silicon solar cell effectively improves solar cell performance by reducing reflection losses. The standard process of pyramidal texturization on silicon wafers is widely implemented in manufacturing and laboratory wet chemical etching. Furthermore, the plasma etching process is usually used to create vertical hole texturization on the surface of silicon. In conjunction with that, laser texturization is known as an alternative method for plasma etching due to user-friendly equipment and a chemical-free process. The passivated pyramidal texturing on silicon wafers is classified as normal texturization. Meanwhile, an improvement of texturization with additional laser texturing on normal texturization Si is known as laser passivated-textured. The transmission of pyramidal textured silicon wafer demonstrates less absorption, and this is due to reflection losses on the front surface of the pyramidal textured silicon wafer. Any texturization will increase the short circuit current (Jsc), open circuit voltage (VOC) and efficiency by minimizing the surface reflection loss through effective photon trapping among textured structures. According to infrared (IR) transmission, a higher laser power of 114 W suggests lower reflection losses. Thus, the results from vertical hole texturization on silicon wafers via IR transmissions and cross-section Field Emission Scanning Electron Microscopy (FESEM) reveal a promising photo generation on the surface. The depth level of vertical holes created by laser due to deeper vertical holes that have been created will reduce the distance of minority carriers and trap more incident light among the walls. In addition, this procedure can be implemented as an alternative method to shorten the distance travel of minority carrier charges, and more light can penetrate deeper solar cells. This, ultimately, will overcome any problems related to optical losses.

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Section: Resultsmentioning

confidence: 99%

Section: Figure 6 Ir Transmission On (A) 1 MM (B) 2 Mm (C) 3 Mm (D) 4...mentioning

confidence: 99%

Impact of Infrared Pulsed Laser on Passivated-Textured Silicon Wafers

Rais,

Sinin,

Hamid

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The most common application of laser technology is scribing thinfilm solar cells to generate large-scale and series-connected photovoltaic modules (Gupta and Carlson 2015). Laser is also used in the edge isolation process (Singh et al 2014), selective emitter formation (Victor et al 2015), doping (Tomizawa et al 2016), all-lasertransferred contact (ALTC) (Wang et al 2015), drilling (Zhang et al 2016) and surface modification (Radfar et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Influence of front surface single-pulse laser drilling on a bifacial solar cell determined through simulation and experiment

et al. 2021

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This study presents the impact of surface modification on bifacial solar cells through single-pulse drilling to enhance efficiency and optical characterisation. A single-pulse laser operates at a wavelength of 1.06 μm, and the microsecond length is a function of its energy and structure setup. The front surface is drilled with two laser energy settings, namely, 23.5 W and 39.6 W, to create a range of micro-holes with distinct depths, widths and crystallographic defects. The modification of the front laser surface has enhanced current density and effectiveness by capturing light in the crystallisation region and the inner region of the micro-holes. Cell topography shift reduces the recombination of electron/hole on the surface. The rear surface registers efficiency digression because of a crystallographic defect that increases optical losses that boost the recombination of hole/electron. The efficiency of the cell with low-power front surface laser drilling increases 1.38%, but that of the cell with low-power back surface laser drilling drops 2.12%. High-power laser drilling increases 1.46% for the front surface and decreases 1.36% for the back surface. Optical characterisation via infrared transmission shows that light increment at a wavelength of 1100 nm is transmitted through the laser drill's micro-holes. The different depths and widths of the micro-holes determine the light transmission rate that can travel to the back surface. The growth of holes improves the light-scattering and absorption regions, affecting cell efficiency.

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Atomic Force Microscopy Exploration and Optical Characteristics Analysis of Nanosecond Fiber Laser Micro-textured Single-Crystal Silicon Surfaces

Olivernesaraj

Sethuramalingam

2022

J. of Materi Eng and Perform

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Effect of laser parameters and post-texturing treatments on the optical and electrical properties of laser textured c-Si wafers

Cited by 7 publications

References 8 publications

Impact of Infrared Pulsed Laser on Passivated-Textured Silicon Wafers

Impact of Infrared Pulsed Laser on Passivated-Textured Silicon Wafers

Influence of front surface single-pulse laser drilling on a bifacial solar cell determined through simulation and experiment

Atomic Force Microscopy Exploration and Optical Characteristics Analysis of Nanosecond Fiber Laser Micro-textured Single-Crystal Silicon Surfaces

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