Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells

Sabatino, Marisa Di; Thorsen, F. W.; Lanterne, Adeline; Hu, Y. Charlie; Bones, J. A.; Øvrelid, Eivind

doi:10.1007/978-3-319-52192-3_38

Cited by 6 publications

(10 citation statements)

References 5 publications

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“…In the transparent layer, i.e., the 0.4-to 3.8-mm range, bubble density is relatively low. Within the range of 3.8-8.2 mm, in the BC layer, the density and diameter of bubbles first increase and then decrease with increasing observation depth (i.e., distance from the inner wall), which is consistent with previous observations [4].…”

Section: Effect Of Melting Parameters On Silica Cruciblessupporting

confidence: 91%

“…The silica crucibles used in the Cz method are typically made from high-purity amorphous silica. In general, these crucibles consist of two different layers: a transparent layer (Almost bubble free) and a bubble-containing layer (BC layer) [4]. In the outer BC layer, the material contains many bubbles, which decrease transparency.…”

Section: Introductionmentioning

confidence: 99%

“…The silica crucible, which is in direct contact with liquid silicon, has an important impact on the quality of monocrystalline silicon, and silicon wafers with pinholes or dislocations cannot be used for solar-cell fabrication [6]. The industry has therefore devoted extensive efforts to preventing bubbles from entering the melt during the phase of crystal growth [4]. The high-purity quartz sand used to prepare glass crucibles contains various amounts of mineral inclusions (mica, feldspar, etc) and fluid inclusions [7,8], which can form bubbles at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

Peng

Qin

2020

Eng. Res. Express

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In photovoltaic industry, silica crucible has an important influence on the quality of single crystal silicon. To obtain a silica glass crucible with large diameter, high uniformity, and low bubble content, two series of crucibles were prepared by the arc melting method, one with various melting parameters (initial power, melting power, and melting time) and crucible sizes, and the other with various quartz purities. The bubbles inside the crucible wall and pores on the inner surface were all measured using a polarised optical microscope and a portable microscope. The results show that all crucibles have a bubble aggregation area in their inner surface (0-0.4 mm), in which the density and size of bubbles are affected by melting time, melting power, and the distance between the crucible and the graphite electrode. The uniformity of the crucible decreases as the crucible diameter increases (16-28 inches), and the crucible is relatively stable when the initial power is below 400 kW. In final, a silica crucible with large size (diameter of 28 inches) and low bubble content on inner surface (∼50% reduction than that of traditional crucibles) was successfully prepared, which is of great value to the photovoltaic industry.

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Section: Effect Of Melting Parameters On Silica Cruciblessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

Peng

Qin

2020

Eng. Res. Express

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“…The quartz crucible prepared using high-purity quartz (HPQ) is a necessary container for monocrystalline silicon, 1,2 significantly influencing the healthy development of semiconductors, 5G communications, new energy and other industrial fields. 3 The key to the purification of HPQ, especially for 5N HPQ (SiO 2 content ≥ 99.999%) is to remove the lattice impurities.…”

Section: Introductionmentioning

confidence: 99%

New insight into the plastic deformation mechanisms during the SiO₂ phase transition process

Wei,

Li,

et al. 2024

RSC Adv.

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“…The other major solid waste from the PV industry is quartz crucibles used for silicon ingot casting. Because there exists a phase transition temperature at 270°C, 2 the quartz crucibles can only be used once. After ingot casting, they are broken, and the broken quartz crucibles are usually crystallized cristobalite having a melting temperature over 1700°C, which is hard to reuse.…”

Section: Introductionmentioning

confidence: 99%

Making reusable reaction‐bonded silicon nitride crucibles for silicon casting from kerf‐loss silicon waste

Liu

Lan

et al. 2019

Int J Applied Ceramic Tech

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Silicon kerf loss during wafer slicing and the broken quartz crucibles after silicon casting are two major solid wastes from photovoltaic (PV) industry. Especially, the recycle of kerf-loss silicon has become an urgent issue because near 100 000 t of solid wastes are generated every year. One of the most meaningful recycle routes of the kerf-loss silicon is to make silicon nitride crucibles to replace the quartz crucibles. In this study, we demonstrated how this is feasible through acid leaching refining, slip casting, and nitridation. The reaction-bonded silicon nitride (RBSN) crucibles after oxidation were found pure enough for silicon ingot growth. More importantly, they could be reused after ingot growth. With the present examples, the potential of using the kerf-loss silicon for fine ceramics is prominent.

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Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells

Cited by 6 publications

References 5 publications

Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

New insight into the plastic deformation mechanisms during the SiO₂ phase transition process

Making reusable reaction‐bonded silicon nitride crucibles for silicon casting from kerf‐loss silicon waste

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Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells

Cited by 6 publications

References 5 publications

Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

Effects of melting parameters and quartz purity on silica glass crucible produced by arc method

New insight into the plastic deformation mechanisms during the SiO2 phase transition process

Making reusable reaction‐bonded silicon nitride crucibles for silicon casting from kerf‐loss silicon waste

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Product

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New insight into the plastic deformation mechanisms during the SiO₂ phase transition process