The use of electro-deoxidation in molten salts to reduce the energy consumption of solar grade silicon and increase the output of PV solar cells

Coxon, Paul R.; Coto, Michael; Juzeliūnas, Eimutis; Fray, Derek J.

doi:10.1016/j.pnsc.2015.11.006

Cited by 12 publications

(12 citation statements)

References 14 publications

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“…By applying voltage between the two electrodes in the molten salt, through Si dissolution, redeposition, and Si alloying-dealloying with Ca to realize the production of black silicon. Another way [ 77 ] is to make black silicon by electro-reduction of SiO 2 with microstructure.…”

Section: Fabrication Techniquesmentioning

confidence: 99%

Recent Progress of Black Silicon: From Fabrications to Applications

et al. 2020

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Since black silicon was discovered by coincidence, the special material was explored for many amazing material characteristics in optical, surface topography, and so on. Because of the material property, black silicon is applied in many spheres of a photodetector, photovoltaic cell, photo-electrocatalysis, antibacterial surfaces, and sensors. With the development of fabrication technology, black silicon has expanded in more and more applications and has become a research hotspot. Herein, this review systematically summarizes the fabricating method of black silicon, including nanosecond or femtosecond laser irradiation, metal-assisted chemical etching (MACE), reactive ion etching (RIE), wet chemical etching, electrochemical method, and plasma immersion ion implantation (PIII) methods. In addition, this review focuses on the progress in multiple black silicon applications in the past 10 years. Finally, the prospect of black silicon fabricating and various applications are outlined.

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Section: Fabrication Techniquesmentioning

confidence: 99%

Recent Progress of Black Silicon: From Fabrications to Applications

et al. 2020

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“…The O 1s spectrum shown in Figure shows four peaks: Si–H (100.2 eV), C–Si (101.2 eV), Si–OH (102.6 eV), Si–O–Si, or C–Si–O–C (103.1 eV). − However, only three peaks are observed in the X-ray photoelectron spectroscopy (XPS) (K-alpha, Thermo Fisher co., Waltham, USA) results of the coating after EB curing in Figure b, corresponding to the Si–Si bond (99.0 eV), Si–C bond (101.6 eV), and Si–O–Si bond (103.6 eV). The OH and Si–H bonds disappear with the formation of Si–Si bonds because the EB breaks the Si–H bonds and converts them into free radical states.…”

Section: Results and Discussionmentioning

confidence: 99%

Enhanced Polymerization and Surface Hardness of Colloidal Siloxane Films via Electron Beam Irradiation

Kim

Na³

et al. 2021

ACS Omega

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Electron beam (EB) curing is a foldable hard coating process and has attracted significant research attention in the field of flexible electronic devices. In this study, we report a method for enhancing material surface hardness with low-energy EB curing in a short time. The low-energy EB improved the coating hardness of films by inducing cross-linking polymerization of the silicon-containing monomer. The hardness of the cured coating layer was measured as 3 H using a pencil hardness tester, and the transparency of the coating was higher than 90%. Owing to a series of cross-linking reactions between Si–O–C and Si–OH groups under EB curing and the formation of Si–Si bonds, the cured layer exhibited remarkable durability in the 100000-flexible cycle test. Additionally, the natural oxidation of the C–O groups on the surface of the coating formed carboxyl groups that improved the hydrophilic properties of the coating layer. To the best of our knowledge, this is the first study to propose that the hardness of polyethylene terephthalate films can be improved using low-energy EBs to rapidly cure silicon-containing coatings. Our results provide a novel and commercially viable approach for improving the hardness of touch screens and foldable displays.

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“…In 2015, Coxon et al [58] also proposed a light capture scheme. Light loss is minimized by scattering and reflection, thus increases the light absorption and the number of carriers generated.…”

Section: Reflection Reduction Of Solar Cell By Electrolysis In Molten Saltmentioning

confidence: 99%

Silicon prepared by electro-reduction in molten salts as new energy materials

Jiang

2020

Journal of Energy Chemistry

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Silicon has a large impact on the energy supply and economy in the modern world. In industry, high purity silicon is firstly prepared by carbothermic reduction of silica with the produced raw silicon being further refined by a modified Siemens method. This process suffers from the disadvantages of high cost and contaminant release and emission. As an alternative, the molten salt electrolysis approach, particularly the FFC Cambridge Process (FFC: Fray-Farthing-Chen), could realize high purity silicon products with morphology-controllable nanostructures at low or mild temperatures (generally 650-900 ºC). In this article, we review the development, reaction mechanisms, and electrolysis conditions of silicon production by the FFC Cambridge Process. Applications of the silicon products from electrolysis in molten salts are also discussed in terms of energy applications, including using them as the photovoltaic element in solar cells and as the charge storage phase in the negative electrode (negatrode) of lithium ion batteries.

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The use of electro-deoxidation in molten salts to reduce the energy consumption of solar grade silicon and increase the output of PV solar cells

Cited by 12 publications

References 14 publications

Recent Progress of Black Silicon: From Fabrications to Applications

Recent Progress of Black Silicon: From Fabrications to Applications

Enhanced Polymerization and Surface Hardness of Colloidal Siloxane Films via Electron Beam Irradiation

Silicon prepared by electro-reduction in molten salts as new energy materials

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