The Possibility of Silicon Purification by Metallurgical Methods: Part I

Serikkanov, Abay; Pavlov, Artem A.; Mukashev, B.N.; Turmagambetov, Tleuzhan; Kantarbayeva, Dinara; Zholdybayev, Kairat

doi:10.3390/pr10071353

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…That is why it undergoes an additional refining process allowing it to increase its to 99.9999%. During the purification using the most common method called the Siemens process [112], silicon is milled to powder and mixed with gaseous hydrochloric acid which produces trichlorosilane. The production of polycrystalline silicon starts directly after the trichlorosilane is purified.…”

Section: Selected Techniques For Processing Of Solar Cell Materialsmentioning

confidence: 99%

Selected Materials and Technologies for Electrical Energy Sector

et al. 2023

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Ensuring the energy transition in order to decrease CO2 and volatile organic compounds emissions and improve the efficiency of energy processes requires the development of advanced materials and technologies for the electrical energy sector. The article reviews superconducting materials, functional nanomaterials used in the power industry mainly due to their magnetic, electrical, optical, and dielectric properties and the thin layers of amorphous carbon nitride, which properties make them an important material from the point of view of environmental protection, optoelectronic, photovoltaic and energy storage. The superconductivity-based technologies, material processing, and thermal and nonthermal plasma generation have been reviewed as technologies that can be a solution to chosen problems in the electrical energy sector and environment. The study explains directly both—the basics and application potential of low and high-temperature superconductors as well as peculiarities of the related manufacturing technologies for Roebel cables, 1G and 2G HTS tapes, and superconductor coil systems. Among the superconducting materials, particular attention was paid to the magnesium di-boride MgB2 and its potential applications in the power industry. The benefits of the use of carbon films with amorphous structures in electronics, sensing technologies, solar cells, FETs, and memory devices were discussed. The article provides the information about most interesting, from the R&D point of view, groups of materials for PV applications. It summarises the advantages and disadvantages of their use regarding commercial requirements such as efficiency, lifetime, light absorption, impact on the environment, costs of production, and weather dependency. Silicon processing, inkjet printing, vacuum deposition, and evaporation technologies that allow obtaining improved and strengthened materials for solar cell manufacturing are also described. In the case of the widely developed plasma generation field, waste-to-hydrogen technology including both thermal and non-thermal plasma techniques has been discussed. The review aims to draw attention to the problems faced by the modern power industry and to encourage research in this area because many of these problems can only be solved within the framework of interdisciplinary and international cooperation.

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Section: Selected Techniques For Processing Of Solar Cell Materialsmentioning

confidence: 99%

Selected Materials and Technologies for Electrical Energy Sector

et al. 2023

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“…Ultra-pure silicon (9 N) for electronic applications is produced by chemical vapor deposition techniques such as the Siemens method. Considering the high energy intensity of these processes and the difference in silicon purity required for application in microelectronics and in photovoltaics (6-7 N), developing processes for the mass production of silicon for photovoltaic applications has been the subject of much investigation [1][2][3][4][5]. Metallurgical techniques have been particularly focused on because of their scalability.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Analysis of Boron and Phosphorus Removal from Si-Fe Alloy by CaO-Al2O3-SiO2-Na2O Slag

Taposhe

Khajavi

2023

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A hybrid process of slag and solvent refining was used to remove boron and phosphorus from silicon. Quaternary slag of CaO-Al2O3-SiO2-Na2O was employed to remove boron (B) and phosphorus (P) from Si-20 wt% Fe alloy at 1300 °C. A slag-to-metal ratio of one was used at different reaction times. The mass transfer coefficient of B and P in the slag and alloy phases was calculated to determine the rate-limiting step. The mass transfer coefficients of B in the alloy and slag phases were 6.6 × 10−7 ms−1 and 2.8 × 10−7 ms−1, respectively. The mass transfer coefficients of P in the alloy and slag phases were determined to be 7.5 × 10−8 ms−1 and 3.5 × 10−7 ms−1, respectively. The rate-limiting stage of the slag–alloy reaction kinetics was mass transport in the liquid slag for B and mass transport in the alloy phase for P.

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The Possibility of Silicon Purification by Metallurgical Methods: Part I

Cited by 2 publications

References 23 publications

Selected Materials and Technologies for Electrical Energy Sector

Selected Materials and Technologies for Electrical Energy Sector

Kinetic Analysis of Boron and Phosphorus Removal from Si-Fe Alloy by CaO-Al2O3-SiO2-Na2O Slag

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