Pathways to Solar Grade Silicon

Andrews, Ross N.; Clarson, Stephen J.

doi:10.1007/s12633-014-9235-x

Cited by 22 publications

(12 citation statements)

References 34 publications

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“…Catalysts such as Speier's catalyst (50 ppm), PtO 2 and Karstedt's catalyst( 5ppm) were used. Of the three catalysts investigated and analysed by 1 HNMR after two hours of reaction, found Karstedt's catalyst to be the best catalystf or this system. Thee fficiency of the systemw as determined by the loss of chemical shifts in the 1 HNMR at 4.6 ppm for silicon hydride and the corresponding double bond group.…”

Section: Silicone Polymer Researchmentioning

confidence: 97%

“…Progress of the hydrosilylation reactionw as monitored by 1 HNMR. The disappearance of the SiÀHb ond from phenyltris(dimethylsiloxy)silanec ore indicated that the hydrosilylation had gone to completion.D iacetoxymethylsilane (in double excess) was then added to this same reaction mix, in as econd step, and stirred overnight.D isappearance of the double bond shift confirmed the completion of the second hydrosilylation.…”

Section: Successful Anionic (Base)ring Opening Polymerisation (Rop) Omentioning

confidence: 99%

“…Clarson has identified the growth of silicon options, from a2 5% increase in annual demandf or silicon used in solar panel applications,w hichh as been the drivingf orce, pushing down the cost of many silicon applications. [1] Silicon materials have been used for aw ide variety of applications,a nd Australia has played ak een role in the develop-ment of many new silicon materials. Siliconm aterials are used for aw ide variety of applications including:s olar panelsf or electricale nergy;a pplicationsi ns pecialist materials;p hotonics;e nvironmental applications;m etallurgicala pplicationsa nd surfacemodification.…”

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confidence: 99%

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Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Clarke¹,

Nguyen

Markovic³

et al. 2017

Chemistry An Asian Journal

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This paper details Australianc ommercial and academic silicon research. Areas of interest include silicon metal, polysiloxane polymers, copolymers, cyclics, emulsions, microemulsions, silanes, silane coupling agents, sol-gel chemistry and water-treatments, porouss ilicon, polysiloxane degradation, silicon hydrogel contact lenses, silanolate synthesis, siloxanei nterfacial polymerisation, hydrosilylation, polysiloxanee lectrolytes forl ithium ion batteries, silanes for PBX materials, octafunctionalized polyhedralo ligomeric silsesquioxanes (POSS), POSS hybrids, sol-gel hydrogenation catalysts, silane modification of silica, sol-gel energy storage, silicate grout stabilisation,G eoPolymer concretes, aerogel insulatingfoams,"Phaco-Ersatz"A ccommodating Gel-Intraocular Lens technologies. Strong collaborative opportunities, in silicon, with Asia, exist with organisationss uch as:1 )The Asian Silicon Society and 2) The Agency for the Assessment and Application of Technology (BPPT) Indonesia. General OverviewHigh-cost, specialised silicon materials, including silicone polymers, have reduced in price, over the years and,i nm any instances, are now competitive in cost and application,w ith counterpart petrochemical derived, organic materials and polymers. Clarson has identified the growth of silicon options, from a2 5% increase in annual demandf or silicon used in solar panel applications,w hichh as been the drivingf orce, pushing down the cost of many silicon applications. [1] Silicon materials have been used for aw ide variety of applications,a nd Australia has played ak een role in the development of many new silicon materials. Siliconm aterials are used for aw ide variety of applications including:s olar panelsf or electricale nergy;a pplicationsi ns pecialist materials;p hotonics;e nvironmental applications;m etallurgicala pplicationsa nd surfacemodification.[2]

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Section: Silicone Polymer Researchmentioning

confidence: 97%

Section: Successful Anionic (Base)ring Opening Polymerisation (Rop) Omentioning

confidence: 99%

mentioning

confidence: 99%

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Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Clarke¹,

Nguyen

Markovic³

et al. 2017

Chemistry An Asian Journal

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“…The formation of SiC can occur in the reactions shown in eqs. (2) and (4). To accelerate the Si production rate, it was reported that the addition of SiC could serve as a barrier to gaseous SiO, which may lead to the acceleration of the reaction and an increase in Si formation.…”

Section: Reduction Processmentioning

confidence: 99%

“…The challenge and focus to reduce its production costs and ful ll the demand for solar cell applications have increased recently. 1) Various routes of Si production have been investigated, including the Siemens, Union Carbide, and uidized bed processes 2) and electrolytic production. 3) For the production process of solar-grade silicon (SoG-Si) with a purity of 6N or higher, some reduction processes have multiple reduction processes with high temperature treatment.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Granulation Binders of High-Purity Carbothermic Reduction for Solar-Grade Silicon

et al. 2016

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The direct carbothermic reduction process from high-purity silica is promising for next-generation low-cost silicon solar cells. In this process, the granulation process is essential to avoid blowout of the silica powder. In this study, we investigated the effect of binders on this reduction process using four kinds of binders. The real-time monitoring of the chamber pressure and quadrupole mass spectroscopic analysis indicated the sign of the blowout phenomena of the generated CO gas and decomposition gas of the binders. In the case of starch and sucrose, the strengths of granules were not enough to the process with the pressure of the generated CO gas, while the granules with enough strength, namely, the ones with polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC), resulted in silicon yield of 33.8% and 27.8%, respectively.

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Effect of Cu Vacancy on Cu₃Si(001) Surface for the Synthesis of SiHCl₃ by Hydrogenation of SiCl₄:A DFT Study

et al. 2022

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In this paper, the effect of Cu vacancy of Cu3Si(001) surface for the hydrogenation of silicon tetrachloride was systematically studied by density functional theory (DFT). The favorable adsorption sites and stable configurations of reaction species are obtained and three possible reaction paths of SiHCl3 formation were achieved by transition state search. For the perfect Cu3Si(001) surface(P), Path1 is the most favorable, with a reaction barrier of 158.15 kJ mol−1. For both the single Cu‐vacancy(SV) and double Cu‐vacancy Cu3Si(001) surface(DV), Path2 is the most favorable, with the reaction barriers of 130.07 kJ mol−1 and 124.81 kJ mol−1, respectively. The results reflect that the activation energy of the reaction decreased significantly with the increase of Cu‐vacancy on the Cu3Si(001) surface, which may be the reason for the higher catalytic activity of Cu3Si catalysts with smaller Cu−Si stoichiometric ratios. This study can provide a reasonable explanation for previously experimental observation and provide a guidance for future catalyst design.

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Pathways to Solar Grade Silicon

Cited by 22 publications

References 34 publications

Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Optimization of the Granulation Binders of High-Purity Carbothermic Reduction for Solar-Grade Silicon

Effect of Cu Vacancy on Cu₃Si(001) Surface for the Synthesis of SiHCl₃ by Hydrogenation of SiCl₄:A DFT Study

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Pathways to Solar Grade Silicon

Cited by 22 publications

References 34 publications

Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Advanced Silicon Chemistry in Australia: Forming Strong Links with Asia

Optimization of the Granulation Binders of High-Purity Carbothermic Reduction for Solar-Grade Silicon

Effect of Cu Vacancy on Cu3Si(001) Surface for the Synthesis of SiHCl3 by Hydrogenation of SiCl4:A DFT Study

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Effect of Cu Vacancy on Cu₃Si(001) Surface for the Synthesis of SiHCl₃ by Hydrogenation of SiCl₄:A DFT Study