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polycrystalline silicon granular

US8802046B2 - Granular polycrystalline silicon and ...

Granular polycrystalline silicon is disclosed, which has a convexity of 0.850-1.000 and a chlorine content of 10-40 ppmw. Also disclosed is a process for producing granular polycrystalline silicon in a fluidized bed reactor, which includes: (a) fluidization of silicon seed particles by gas flow in a fluidized bed heated by a heating apparatus, (b) addition of a silicon- and halogen-containing ...

US9296616B2 - Granular polycrystalline silicon and ...

Granular polycrystalline silicon includes a compact matrix including radiating acicular crystal aggregates of crystal size from 0.001-200 μm. A process for producing granular polycrystalline silicon includes producing granular silicon in a fluidized bed reactor from a gas mixture containing TCS (20-29 mol %) and hydrogen at a fluidized bed temperature of 900-970° C., dividing the granular ...

Granular polycrystalline silicon and production thereof ...

Granular polycrystalline silicon or granular polysilicon for short is an alternative to the polysilicon produced in the Siemens process. While the polysilicon in the Siemens process is obtained as a cylindrical silicon rod which has to be comminuted prior to further use thereof in a time-consuming and costly manner to give what is called chip ...

Fracture Behavior of Granular Polycrystalline Silicon ...

Fracture Behavior of Granular Polycrystalline Silicon Using Micro-scale and Macro-scale Indentation Techniques MOHAMAD B. ZBIB and DAVID F. BAHR Three batches of polycrystalline silicon (polysilicon) produced with the fluidized bed reactor method were used to study the fracture behavior using micro-scale and macro-scale indentation techniques.

Fracture Behavior of Granular Polycrystalline Silicon ...

Dec 18, 2013  Three batches of polycrystalline silicon (polysilicon) produced with the fluidized bed reactor method were used to study the fracture behavior using micro-scale and macro-scale indentation techniques. The fracture toughness was determined to be 0.60, 0.74, and 0.86 MPa m0.5 using Vickers microhardness tests for three samples with a high, medium, and low hydrogen content, respectively.

Fracture Behavior of Granular Polycrystalline Silicon ...

Mar 01, 2014  Three batches of polycrystalline silicon (polysilicon) produced with the fluidized bed reactor method were used to study the fracture behavior using micro-scale and macro-scale indentation techniques. The fracture toughness was determined to be 0.60, 0.74, and 0.86 MPa m 0.5 using Vickers microhardness tests for three samples with a high, medium, and low hydrogen content, respectively.

Polycrystalline silicon - Wikipedia

Polycrystalline silicon, or multicrystalline silicon, also called polysilicon or poly-Si, is a high purity, polycrystalline form of silicon, used as a raw material by the solar photovoltaic and electronics industry. Polysilicon is produced from metallurgical grade silicon by a chemical purification process, called the Siemens process. This process involves distillation of volatile silicon compounds, and their decomposition into silicon at high temperatures. An emerging, alternative process of refinement uses a fluidized bed re

Global Polycrystalline Silicon Market 2020 research report ...

Oct 16, 2020  Marketdesk offers the latest published report on “Polycrystalline Silicon Market Analysis and Forecast 2020- 2026” delivering key insights and providing a competitive asset to clients through a detailed report. Polycrystalline Silicon Market Research Report also provides granular analysis scenario of the market share, revenue forecasts pricing and profitability and geographic regions of ...

Characterization of granular silicon, powders, and ...

Nov 19, 2011  Growth of polycrystalline silicon from fluidized bed reactors (FBR) produces two general types of silicon products: granular material (diameters on the order of mm) and homogeneously nucleated material often called nanopowder (diameters in the range 10–100 nm). Nanopowder particles tend to be amorphous and have a spherical morphology with an average particle diameter of ~80 nm.

Fracture Behavior of Granular Polycrystalline Silicon ...

Fracture Behavior of Granular Polycrystalline Silicon Using Micro-scale and Macro-scale Indentation Techniques MOHAMAD B. ZBIB and DAVID F. BAHR Three batches of polycrystalline silicon (polysilicon) produced with the fluidized bed reactor method were used to study the fracture behavior using micro-scale and macro-scale indentation techniques.

Fracture Behavior of Granular Polycrystalline Silicon ...

Growth of polycrystalline silicon from fluidized bed reactors (FBR) produces two general types of silicon products: granular material (diameters on the order of mm) and homogeneously nucleated ...

Characterization of granular silicon, powders, and ...

Nov 19, 2011  Growth of polycrystalline silicon from fluidized bed reactors (FBR) produces two general types of silicon products: granular material (diameters on the order of mm) and homogeneously nucleated material often called nanopowder (diameters in the range 10–100 nm). Nanopowder particles tend to be amorphous and have a spherical morphology with an average particle diameter of ~80 nm.

Fracture Behavior of Granular Polycrystalline Silicon ...

Three batches of polycrystalline silicon (polysilicon) produced with the fluidized bed reactor method were used to study the fracture behavior using micro-scale and macro-scale indentation techniques. The fracture toughness was determined to be 0.60, 0.74, and 0.86 MPa m 0.5 using Vickers microhardness tests for three samples with a high, medium, and low hydrogen content, respectively.

Polycrystalline silicon - Wikipedia

Polycrystalline silicon, or multicrystalline silicon, also called polysilicon or poly-Si, is a high purity, polycrystalline form of silicon, used as a raw material by the solar photovoltaic and electronics industry.. Polysilicon is produced from metallurgical grade silicon by a chemical purification process, called the Siemens process.This process involves distillation of volatile silicon ...

Method of producing granular polycrystalline silicon in ...

In this sense, the granular polycrystalline silicon in accordance with the present invention can be obtained by introducing pseudoviruses gas 10 in the layer of particles of silicon using elements 14, 14' input pseudoviruses gas and introducing the reaction gas 11 containing silicon atoms in the layer of particles of silicon with item 15 of the ...

FLUIDIZED BED REACTOR FOR PRODUCTION OF GRANULAR ...

Aug 23, 2017  16. A granular polycrystalline silicon fluidized-bed reactor, comprising: a segmented reactor tube disposed between a reactor top and a reactor bottom, one or more heaters, at least one nozzle for supplying fluidizing gas, at least one nozzle for supplying silicon-containing reaction gas, a silicon seed particle feed, a product removal line, and an off gas removal line, wherein the reactor ...

Manufacture of Granular Polysilicon from Trichlorosilane ...

Digital photos of granular silicon before and after CVD Figure 6. Cross-sectional microstructure of granular silicon after CVD Cold Flow Experiments in ICFB A big problem in the manufacture of granular polysilicon from SiHCl 3 in a fluidized bed reactor is the deposition of silicon on the inner reactor wall. The ICFB reactor

Characterization and mechanical properties of solar grade ...

Polycrystalline silicon is mainly used for solar cell applications, structures in micro-electromechanical systems, and production of single crystal Si. One of the relatively new methods for producing large quantities of polysilicon is fluidized bed reactor (FBR), where two main morphologies are produced, granular solid (1-3 mm) and nanopowders (30-300 nm).

Silicon Production - ScienceDirect

Jan 01, 2014  Polycrystalline Silicon Definition and Use. Polycrystalline silicon (polysilicon, poly, polysi) is defined as high-purity silicon metal with a structure of multiple small crystals. The small crystals are different orientations of silicon, primarily the (111) orientation, observed as small grains, typically 1–5 μ

PolySilicon - Silicon Valley Microelectronics

Polycrystalline Silicon, or Poly-Si, is an ultra pure form of silicon that has great insulating properties and temperature resistance. Polysilicon begins in two forms, chunk and granular, with granular being more popular in thin applications and high-conformity applications.Poly-Si layers can also be doped or undoped depending on the end user’s specifications.

Electrical Properties of Granular Silicon

thermoelements. Silicon granules were obtained in the framework of powder technology, which are given in work [2 ÷ 5], and have been used by us for obtaining a polycrystalline silicon plate. As a raw material of the technology, single-crystal silicon substrates were use, where solar cells with a coefficient of about 15% are use on their basis.

Polysilicon Materials for PV Manufacturers Targray

Raw polycrystalline silicon, commonly referred to as polysilicon, is a high-purity form of silicon which serves as an essential material component in the solar photovoltaic (PV) manufacturing industry. It is the primary feedstock material used for the production of solar cells today. Polysilicon feedstock generally consists of large rods which ...

Polysilicon and Its Characterization Methods SpringerLink

Float zone (FZ) process is an important method for converting granular polysilicon and polycrystalline chunk materials to monocrystalline silicon. A monocrystalline silicon rod is used to test the resistivity (n-type or p-type), minority carrier lifetime, carbon, oxygen, donors,

Characterization of granular silicon, powders, and ...

Nov 19, 2011  Growth of polycrystalline silicon from fluidized bed reactors (FBR) produces two general types of silicon products: granular material (diameters on the order of mm) and homogeneously nucleated material often called nanopowder (diameters in the range 10–100 nm). Nanopowder particles tend to be amorphous and have a spherical morphology with an average particle diameter of ~80 nm.

Electrical Properties of Granular Silicon

thermoelements. Silicon granules were obtained in the framework of powder technology, which are given in work [2 ÷ 5], and have been used by us for obtaining a polycrystalline silicon plate. As a raw material of the technology, single-crystal silicon substrates were use, where solar cells with a coefficient of about 15% are use on their basis.

FLUIDIZED BED REACTOR FOR PRODUCTION OF GRANULAR ...

Aug 23, 2017  16. A granular polycrystalline silicon fluidized-bed reactor, comprising: a segmented reactor tube disposed between a reactor top and a reactor bottom, one or more heaters, at least one nozzle for supplying fluidizing gas, at least one nozzle for supplying silicon-containing reaction gas, a silicon seed particle feed, a product removal line, and an off gas removal line, wherein the reactor ...

Effect of thickness and granular structure on the ...

Jan 01, 1994  CONCLUSION With the help of a simple geometrical model of the polycrystalline silicon film and by solving the 2D-Poisson's equation numerically taking the carrier trapping at g.b. into account, we have related the variation of conductivity as a function of the thickness of the film to the main particularities of the latter: granular structure ...

Characterization and mechanical properties of solar grade ...

Polycrystalline silicon is mainly used for solar cell applications, structures in micro-electromechanical systems, and production of single crystal Si. One of the relatively new methods for producing large quantities of polysilicon is fluidized bed reactor (FBR), where two main morphologies are produced, granular solid (1-3 mm) and nanopowders (30-300 nm).

Silicon Production - ScienceDirect

Jan 01, 2014  Polycrystalline Silicon Definition and Use. Polycrystalline silicon (polysilicon, poly, polysi) is defined as high-purity silicon metal with a structure of multiple small crystals. The small crystals are different orientations of silicon, primarily the (111) orientation, observed as small grains, typically 1–5 μ

Effect of multiple scans and granular defects on excimer ...

A thorough investigation of excimer laser annealed polycrystalline silicon thin film transistors fabricated from single and multiple laser scan processes has been completed. Our results show that even though multiple scans can enhance the grain size in the polycrystalline silicon film, the production of intragrain defects and interface trapping states have adverse effects on the performance of ...

Polysilicon and Its Characterization Methods SpringerLink

Float zone (FZ) process is an important method for converting granular polysilicon and polycrystalline chunk materials to monocrystalline silicon. A monocrystalline silicon rod is used to test the resistivity (n-type or p-type), minority carrier lifetime, carbon, oxygen, donors,

粒状多晶硅规格书 - trsilicon

GRANULAR POLYSILICON SPECIFICATION. 粒状多晶硅:流化床反应法制备得到的太阳能级多晶硅。 Granular Polysilicon: Solar grade polycrystalline silicon produced by Fluidized Bed Reactor. 来源编号: 68001 Resource No: 68001. 纯度: PURITY: > 99.9999 %

粒状多晶硅规格书 - trsilicon

1 / 2. 粒状多晶硅规格书. GRANULAR POLYSILICON SPECIFICATION. 粒状多晶硅:流化床反应法制备得到的太阳能级多晶硅。 Granular Polysilicon: Solar grade polycrystalline silicon produced by Fluidized Bed Reactor.

PolySilicon - Silicon Valley Microelectronics

Polycrystalline Silicon, or Poly-Si, is an ultra pure form of silicon that has great insulating properties and temperature resistance. Polysilicon begins in two forms, chunk and granular, with granular being more popular in thin applications and high-conformity applications.Poly-Si layers can also be doped or undoped depending on the end user’s specifications.

Characterization and mechanical properties of solar grade ...

1.1 (a) Optical microscopy image showing cross-sectional view of granular FBR Si (b) TEM image of the amorphous Si nanopowders..... 2 2.1 (a) Optical micrograph of cross section of a typical granular silicon bead showing onion like pore structure.

Solar Silicon Materials for PV Manufacturing Targray

The Targray Solar Division commercializes a range of silicon materials for PV manufacturers and distributors. Since 2005, our PV product portfolio has been a trusted source for high-purity polysilicon, solar silicon wafers, cells and ingots, and adhesive pastes for photovoltaics technology developers around the world.

Shaanxi Non-Ferrous Tian Hong REC Silicon Materials Co., Ltd.

Electronic grade polycrystalline silicon block products CZ and zone melting silicon bar FZ represent the company's highest technical level. Granular Polysilicon. Brief introduction: Our company brings in U.S. REC Silicon FBR-B (the second generation FBR) technology to produce granular polysilicon. It is the only one in China which is capable to ...

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