Glass powder, positive electrode silver paste prepared therefrom and solar battery

A technology of glass powder and positive electrode, applied in the field of solar cells, can solve the problems of photoelectric conversion efficiency and pulling force contradiction

Inactive Publication Date: 2017-03-08
KANGZHUN ELECTRONICS TECH KUNSHAN +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, one of the main problems faced by the existing positive electrode silver paste is the contradiction between photoelectric conversion efficiency and tensile force. How to develop a solar positive electrode silver paste with excellent performance, high photoelectric conversion efficiency and high tensile force, is currently the focus of the industry's attention

Method used

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  • Glass powder, positive electrode silver paste prepared therefrom and solar battery

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preparation example Construction

[0025] A kind of preparation method of above-mentioned glass powder, it comprises the steps:

[0026] Step S1: PbO, Bi 2 o 3 , TeO 2 , SiO 2 、WO 3 , ZnO, CaO, MgO, Al 2 o 3 , Li 2 O, Na 2 O, Fe 2 o 3 , B 2 o 3 and BaO and other oxides are mixed evenly according to the predetermined ratio and added to the platinum crucible.

[0027] Step S2: Put the above-mentioned platinum crucible filled with oxides into a high-temperature sintering furnace, sinter at a temperature of 800-1200° C., and keep it warm for 0.5-2 hours to obtain molten glass.

[0028] Step S3: Quenching the molten glass to form amorphous glass particles.

[0029] Step S4: Put the above glass particles in a ball mill for ball milling to obtain glass powder with a median particle size ranging from 0.5 μm to 3 μm.

[0030] It can be understood that in the step S1, various salts or fluorides that can be decomposed into corresponding oxides can also be used instead of the oxides.

[0031] A positive elec...

Embodiment 1

[0048] In the present embodiment, glass frit is made of PbO, Bi 2 o 3 , TeO 2 , SiO 2 、WO 3 , ZnO, CaO, MgO, Al 2 o 3 , Li 2 O, Na 2 O, Fe 2 o 3 , B 2 o 3 And BaO prepared.

[0049] Among them, the mass percentage of PbO is 30%, TeO 2 The mass percentage content is 31%, Bi 2 o 3 The mass percentage content is 22%, SiO 2 The mass percentage content of ZnO is 7%, the mass percentage content of ZnO is 2%, Na 2 The mass percentage of O is 1%, Li 2 The mass percentage of O is 1.5%, Al 2 o 3 The mass percentage of CaO is 1%, the mass percentage of CaO is 0.5%, B 2 o 3 The mass percentage content is 1%, Fe 2 o 3 The mass percentage content of BaO is 0.5%, the mass percentage content of BaO is 0.5%, the mass percentage content of MgO is 0.5%, WO 3 The mass percent content is 1.5%.

Embodiment 2

[0051] In the present embodiment, glass frit is made of PbO, Bi 2 o 3 , TeO 2 , SiO 2 、WO 3 , ZnO, CaO, MgO, Al 2 o 3 , Li 2 O, Na 2 O, Fe 2 o 3 , B 2 o 3 And BaO prepared.

[0052] Among them, the mass percentage of PbO is 27%, TeO 2 The mass percentage content is 28%, Bi 2 o 3 The mass percentage content is 26%, SiO 2 The mass percentage content of ZnO is 7.5%, the mass percentage content of ZnO is 2.5%, Na 2 The mass percentage of O is 1%, Li 2 The mass percentage of O is 1.5%, Al 2 o 3 The mass percentage of CaO is 1%, the mass percentage of CaO is 0.5%, B 2 o 3 The mass percentage content is 1%, Fe 2 o 3 The mass percentage content of BaO is 0.5%, the mass percentage content of BaO is 0.5%, the mass percentage content of MgO is 0.5%, WO 3 The mass percent content is 2.5%.

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Abstract

The invention relates to glass powder. The glass powder contains the ingredients in percentage by mass: 20% to 60% of PbO, 10% to 50% of Bi2O3, 20% to 60% of TeO2 and 5% to 15% of SiO2. According to the glass powder, through adjusting and optimizing chemical composition, electrodes prepared from positive electrode silver paste prepared from the glass powder can have relatively high photoelectric conversion efficiency and relatively good tension property, and thus the service life of a solar battery is guaranteed. In addition, the invention further provides the positive electrode silver paste prepared from the glass powder and the solar battery prepared from the positive electrode silver paste.

Description

technical field [0001] The invention relates to a glass powder, a positive electrode silver paste prepared by using the glass powder, and a solar cell prepared by using the positive electrode silver paste. Background technique [0002] With the increasingly prominent contradiction between human beings and the environment, as well as the increasing shortage of traditional energy sources, solar energy, as a sustainable, non-polluting green new energy, has received widespread attention. The proportion of the structure will become heavier and heavier. [0003] A crystalline silicon solar cell is a solar power generation device that converts light energy into electrical energy and stores it. Conventional P-type substrate solar cells have a negative electrode on the front (illuminated surface) and a positive electrode structure on the back (backlit surface). Sunlight shines on the front of the cell to form electron-hole pairs, and the carriers are formed in the PN junction. Dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00H01B1/16H01B1/22H01L31/0224
CPCC03C12/00H01B1/16H01B1/22H01L31/022425Y02E10/50
Inventor 张顾耀许迪张楚鑫
Owner KANGZHUN ELECTRONICS TECH KUNSHAN
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