Conductive paste, solar cell prepared from conductive paste and manufacturing method

A solar cell and conductivity technology, which is applied in the field of conductive paste and solar cells prepared therefrom and manufacturing, can solve the problems of affecting the performance of solar cells, poor EL detection performance, poor tensile performance, etc., and achieves ohmic contact Excellent, high stability, excellent bonding strength

Active Publication Date: 2020-11-06
CHANGZHOU JUHE NEW MATERIAL CO LTD
View PDF15 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Through this new detection project, solar cell researchers began to understand that in solar cells using lead-free tellurium-based glass electrode pastes, black spots or cloudy black spots often occur, affecting the performance of solar cells
Examples of EL detection photo...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive paste, solar cell prepared from conductive paste and manufacturing method
  • Conductive paste, solar cell prepared from conductive paste and manufacturing method
  • Conductive paste, solar cell prepared from conductive paste and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 〔Prototype making〕

[0094] Making Tellurium Glass : Prepared TeO 2 、 Bi 2 o 3 、WO 3 , ZnO, Al 2 o 3 , LiO 2 , B 2 o 3 etc., according to the ratio shown in Table 1-1, Table 1-2, and Table 1-3, these glass raw materials were weighed and prepared, and finally small sample glasses A-1 to A-5 were made.

[0095] Table 1-1

[0096]

[0097] Table 1-2

[0098]

[0099] Table 1-3

[0100] A-5 TeO2 B2O3 weight% 93 7 Mol% 85.3 14.7

[0101] in,

[0102] A-4 is an embodiment of the tellurium-based glass defined by the present invention that does not substantially contain lead and uses lithium bismuth tellurium as an essential component. The rest is a comparative example, specifically,

[0103] A-1 is bismuth telluride tungsten glass (formulation in patent document 7);

[0104] A-2 is a glass in which bismuth telluride zinc is the main component and aluminum is added.

[0105] A-3 is a glass in which bismuth tellur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Square resistanceaaaaaaaaaa
Login to view more

Abstract

The invention discloses a conductive paste for forming a surface electrode of a solar cell. The conductive paste comprises conductive powder, mixed glass and an organic phase, wherein the mixed glasscomprises the following two types of glass components: the first type of glass is at least one selected from tellurium-based glass which does not substantially contain lead and takes tellurium bismuthlithium as an essential component; the second type of glass is at least one kind of glass selected from lead silicate-based glasses that contain lead and silicon as essential components and that do not substantially contain tellurium. The invention also provides a solar cell prepared by printing the conductive paste into a surface electrode and a manufacturing method of the solar cell. A solar cell prepared from the conductive paste is good in EL performance detection, excellent in cell ohmic contact, high in cell efficiency, high in stability and strong in adhesive force, and the bonding performance is considered while the stability and the ohmic contact are improved.

Description

technical field [0001] The invention mainly relates to a paste composition suitable for manufacturing a solar cell electrode with no defect under EL detection and high stability, a solar cell using the paste and a manufacturing method thereof. Background technique [0002] A conventional solar cell is to set an electrically opposite conductive semiconductor layer on a conductive semiconductor substrate, and to set an anti-reflective film and a light-receiving surface electrode on the semiconductor layer, and to set a rear electrode structure on the back (hereinafter referred to as When the front and back are not distinguished, they are collectively referred to as "electrodes"). After receiving light, the electric energy generated by the pn junction of the semiconductor is extracted through the electrodes. Assuming that the above-mentioned semiconductor substrate is a p-type polycrystalline semiconductor silicon substrate, the semiconductor layer on the light-receiving side s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01B1/16H01B1/22H01L31/0224H01L31/18C03C3/12C03C3/07
CPCH01B1/16H01B1/22H01L31/022425H01L31/18C03C3/122C03C3/07Y02E10/50Y02P70/50
Inventor 冈本珍范刘海东任益超熊长军熊志凯蒋安松万莉牟亭亭
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap