Impurity Doping in Silicon Nanowires

Fukata, Naoki

doi:10.1002/adma.200900376

Cited by 94 publications

(119 citation statements)

References 19 publications

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“…Various nanowires, such as Si [4], ZnO [5], ZnS [6,7], GaN [8], GaP [9] and SiO x [10] nanowires, have been synthesized by different methods. Among them, SiO x nanowires attract special attention in optoelectronic applications because of their high intense and stable blue light emission at the room temperature [11,12] and their potential applications in the field of light localizations [11,13], low dimensional waveguides [11,13,14], and scanning near-field optical microscopy [11,14,15].…”

Section: Introductionmentioning

confidence: 99%

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Nie

Chen

et al. 2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Nie

Chen

et al. 2011

Journal of Alloys and Compounds

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“…The peak position agrees well with the reported values for 11 B-Si (620 cm -1 ) in B-doped bulk silicon 44 and 11 B-Si (618 cm -1 ) in B-doped Si-nanowire. 45 In this study, we used natural boron ( more abundant 11 B-Si peak was detected. Therefore, the reduction of B 2 O 3 in the borosilicate glass, which was suggested by the cyclic voltammetry and potential-pO 2− diagram, is confirmed.…”

Section: H O (In Glass)mentioning

confidence: 99%

Editors' Choice—Behaviors of Si, B, Al, and Na during Electrochemical Reduction of Borosilicate Glass in Molten CaCl₂

Katasho

Yasuda

2017

J. Electrochem. Soc.

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The electrochemical reduction of borosilicate glass in molten CaCl 2 at 1123 K was investigated. The behaviors of the constituent elements, i.e., Si, B, Al, Na, and K, were estimated using potential-pO 2− diagrams constructed from the thermodynamic data for the species. The diagrams suggested that the first cathodic wave in the cyclic voltammogram results from the reduction of the B 2 O 3 component. The dissolution of the Na 2 O and K 2 O components, which was predicted from the diagrams, was confirmed by energy dispersive X-ray analysis of a borosilicate glass plate after immersion into molten CaCl 2 without electrolysis. The scanning electron microscopy/wavelength dispersive X-ray mappings and Raman spectrum for borosilicate glass reduced at 0.9 V vs. Ca 2+ /Ca indicated that SiO 2 and B 2 O 3 are reduced to Si and B-Si compound. The formation of Ca-Al-O compounds owing to the increase of O 2− ions is suggested. The pO 2− range during electrolysis at 0.9 V was indicated to be 2. In 2015, more than 11% of global electricity was produced by nuclear power plants.1 Indeed, nuclear power generation is expected to replace conventional fossil-fuel-based thermal power generation in order to accommodate the energy demands of the growing global population. Considering the controls on carbon dioxide emissions, nuclear energy is attractive as a low-carbon-emission power source. However, the disposal of radioactive waste is a serious problem for nuclear power generation, especially in countries frequently hit by volcanic tremors and earthquakes, such as Japan, where the selection of sites suitable for the geological disposal of radioactive wastes is very difficult. Therefore, the development of an alternative to geological disposal is required.In Japan, a new process for the disposal of radioactive wastes has been proposed. 2 In the first step of this process, long-lived fission products (LLFPs) such as 135 Cs, 79 Se, 93 Zr, and 107 Pd are separately recovered from high-level nuclear waste. They are then disposed as stable waste after their conversion by nuclear transmutation into shortlived or stable nuclides. If this process is established as a new disposal process for nuclear wastes, the amount of nuclear waste will be significantly reduced. This process has another potential advantage in that it may be used to recover valuable elements like platinum group metals, which can then be utilized for automobiles and fuel-cell catalysts. Moreover, if this process is realized, it is also applicable to the LLFPs already present in the large amount of existing vitrified waste. However, to accomplish this, each LLFPs must first be recovered from the vitrified waste.Recently, the authors proposed a new method to recover LLFPs from vitrified wastes by electrochemical reduction in molten CaCl 2 .The three-dimensional (3-D) network structure of the glass (Si-O) is electrochemically destroyed. The reduction product is then subjected to the separation of each element. This process is superior to the conventional wet process using HF ac...

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“…The electronic properties can be precisely controlled by introducing dopant reactants during the growth. Addition of different ratios of diborane or phosphine to silane reactant during growth produces p-or n-type Si nanowires with effective doping concentrations directly related to the silane: dopant gas ratios (Cui et al, 2000) (Cui et al, 2001) (Zheng et al, 2004) (Fukata, 2009). It was demonstrated that B and P can be used to change the conductivity of Si NWS over many orders of magnitude (Cui et al, 2000).…”

Section: Bottom Up Approachmentioning

confidence: 99%

Silicon-Based Third Generation Photovoltaics

Nychyporuk¹,

Lemiti²

2011

Solar Cells - Silicon Wafer-Based Technologies

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Impurity Doping in Silicon Nanowires

Cited by 94 publications

References 19 publications

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Editors' Choice—Behaviors of Si, B, Al, and Na during Electrochemical Reduction of Borosilicate Glass in Molten CaCl₂

Silicon-Based Third Generation Photovoltaics

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Impurity Doping in Silicon Nanowires

Cited by 94 publications

References 19 publications

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Amorphous SiOx nanowires catalyzed by metallic Ge for optoelectronic applications

Editors' Choice—Behaviors of Si, B, Al, and Na during Electrochemical Reduction of Borosilicate Glass in Molten CaCl2

Silicon-Based Third Generation Photovoltaics

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Product

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About

Editors' Choice—Behaviors of Si, B, Al, and Na during Electrochemical Reduction of Borosilicate Glass in Molten CaCl₂