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Preparation method of multielement nanomaterials and solar cell electronic silver paste containing multielement nanomaterials

A technology of solar cells and nanomaterials, applied in the field of electronic silver paste for solar cells, to achieve the effects of excellent ohmic contact, increased silver content, and reduced series resistance

Active Publication Date: 2013-09-11
DK ELECTRONICS MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the glass powder prepared by the existing top-down (top-down) process, and to provide a method for preparing multi-element nanomaterials by adopting the bottom-up (bottom-up) process and containing the multi-element Nanomaterials for Solar Cell Electronic Silver Pastes

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  • Preparation method of multielement nanomaterials and solar cell electronic silver paste containing multielement nanomaterials
  • Preparation method of multielement nanomaterials and solar cell electronic silver paste containing multielement nanomaterials

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preparation example Construction

[0025] A method for preparing multi-component nanomaterials, the preparation method comprising the following steps: (1) adding the first metal organic matter and a surfactant into a high-temperature resistant organic solvent, and keeping the temperature for 30 -60min, the first metal organic compound decomposes to form the nanoparticles of the first metal oxide; (2) Then the second metal organic compound is added to the organic solvent, and the second metal organic compound decomposes at 300-500°C to form the first metal organic compound Two kinds of metal oxides, and the second metal oxide uses the first metal oxide as a seed, and grows into the second metal oxide nanoparticles next to the nanoparticles of the first metal oxide; (3) adding in sequence Contain the required metal-organic substances until the required multi-component nanomaterials are formed; (4) The multi-component nano-materials are separated from the organic solvent by a rotary centrifuge; (5) The separated mu...

Embodiment 1

[0028] A Binary Nanomaterial PbO-SiO 2 The preparation method comprises the following steps: first, in phenyl ether, add lead acetylacetonate and surfactant, when the temperature rises to 380 DEG C, the lead acetylacetonate decomposes to form PbO nanoparticles when kept warm for 30 minutes; then Trichlorosilane is added to phenyl ether, and trichlorosilane decomposes at 450°C to form SiO 2 , and SiO 2 Seed PbO, grow SiO next to PbO nanoparticles 2 nanoparticles, which form the desired binary nanomaterial PbO-SiO 2 crude product; then the binary nanomaterial PbO-SiO 2 The crude product is separated from the organic solvent by a rotary centrifuge; the final separated binary nanomaterial PbO-SiO 2 After washing with alcohol and drying into powder, the binary nanomaterial PbO-SiO can be obtained 2 finished product, attached figure 1 Binary nanomaterial PbO-SiO 2 The TEM picture of the finished product; in the above preparation method, triethoxy (1-phenylvinyl) silane, 3-ami...

Embodiment 2

[0030] A ternary nanomaterial PbO-Al 2 o 3 -TeO 2 The preparation method comprises the following steps: firstly, adding lead acetate and a surfactant to 1-octadecene, and when the temperature rises to 400° C., the lead acetate decomposes to form PbO nanoparticles when kept warm for 50 minutes; then Aluminum acetylacetonate is added to an organic solvent, and aluminum acetylacetonate decomposes at 480°C to form Al 2 o 3 , and Al 2 o 3 With PbO as the seed, Al grows next to the nanoparticles of PbO 2 o 3nanoparticles; ammonium hexabromotellurate is then added to the organic solvent, and ammonium hexabromotellurate decomposes at 360°C to form TeO 2 , and TeO 2 with PbO-Al 2 o 3 For the seeds, the PbO-Al 2 o 3 The nanoparticles grow next to TeO 2 Nanoparticles; that is, the formation of the desired ternary nanomaterial PbO-Al 2 o 3 -TeO 2 crude product; then the ternary nanomaterial PbO-Al 2 o 3 -TeO 2 The crude product is separated from the organic solvent by a...

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Abstract

The invention discloses a preparation method of multielement nanomaterials and solar cell electronic silver paste containing the multielement nanomaterials. The multielement nanomaterials are prepared through a bottom-up technology. Metal organics are sequentially fed in high temperature resistant organic solvents, so that the metal organics are resolved to form metallic oxide nano-particles until the required multielement nanomaterials are formed. The multielement nanomaterials are separated from the organic solvents from a rotating centrifugal machine to be washed and dried into a powder shape. Consequently, the finished products of the multielement nanomaterials are obtained. The multielement nanomaterials are small in grain size, and capable of filling the same size on the condition that the dosage (wt%) is low, can be dispersed more evenly in electronic silver paste, improves the silver content in the paste and the conductivity of the paste after sintering, so that better ohmic contact is obtained, and photoelectric conversion efficiency is finally improved. The prepared silver paste can reduce series resistance by 80%, and improve the photoelectric conversion efficiency by 0.5%-2%.

Description

technical field [0001] The invention relates to the technical field of crystalline silicon solar cells, in particular to a preparation method of a multi-component nano material and a solar cell electronic silver paste containing the multi-component nano material. Background technique [0002] At present, the electronic silver paste of crystalline silicon solar cells is mainly composed of three components: (1) Metal filler, that is, silver powder, because compared with other precious metals, silver powder has high conductivity, good chemical stability, and relatively low price, so it is used as the conductive functional phase; (2) glass powder (usually lead borosilicate system) as a high-temperature bonding phase to ensure the bonding strength between the metal thick film and the silicon substrate, and to promote the sintering of the silver powder and the bonding with the silicon substrate. (3) The organic vehicle, that is, the low-temperature adhesive, plays the role of disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22B82Y40/00H01L31/0224
Inventor 史卫利史小文
Owner DK ELECTRONICS MATERIALS INC
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