Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single crystalline silicon solar cell

A technology of solar cells and monocrystalline silicon, which is applied in the field of solar cells, can solve problems affecting carrier collection efficiency, achieve the effects of shortening the actual transmission distance, improving battery efficiency, and shortening the transmission distance

Active Publication Date: 2014-07-16
CHANGZHOU SHICHUANG ENERGY CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem brought about by this is that, from a microscopic point of view, in many cases, electrons are not transported to the grid through the optimal route, thus affecting the collection efficiency of carriers unconsciously

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
  • Single crystalline silicon solar cell
  • Single crystalline silicon solar cell
  • Single crystalline silicon solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 2 As shown, the bases 1 and 2 of the four sides of the bottom of the pyramid structure form an angle of about 45 degrees with the edge 3 of the silicon wafer; the electrode grid lines 4 are parallel to one set of bases 2 among the four sides of the bottom of the pyramid structure, and perpendicular to the other set of bases 1 . The electrode grid lines 4 are straight lines.

Embodiment 2

[0026] Such as image 3 As shown, one group of bases 1 in the four sides of the bottom of the pyramid structure is parallel to the edge 3 of the silicon wafer, and the other group of bases 2 is perpendicular to the edge 3 of the silicon wafer; the electrode grid line 4 is parallel to a group of bases 1 in the four sides of the bottom of the pyramid structure, It is perpendicular to the bottom edge 2 of another group, that is, the electrode grid line 4 is parallel to the edge 3 of the silicon wafer. The electrode grid lines 4 are straight lines.

[0027] Above embodiment does not represent that electrode grid line can only be straight line, in fact electrode grid line also can be arc or zigzag line among the present invention, as long as everywhere tangent line on electrode grid line and one side in the bottom surface four sides of certain pyramid structure The included angle is 0-10 degrees or 80-90 degrees.

[0028]

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

No PUM Login to View More

Abstract

The invention discloses a single crystalline silicon solar cell. The single crystalline silicon solar cell comprises a silicon chip and electrode grid lines, wherein the silicon chip is provided with a pyramid-structure texturing surface, and the included angle between the tangent line of each portion of the electrode grid lines and one of the four edges on the bottom surface of a certain pyramid structure ranges from 0 degree to 10 degrees or from 80 degrees to 90 degrees. According to the single crystalline silicon solar cell, the bottom edges of the pyramid structure of the texturing surface of the silicon chip can be effectively used for transmitting photoproduction electrons, the transmission distance of the photoproduction electrons on the surface of the silicon chip is shortened, collection efficiency of the electrons is effectively improved, and then cell conversion efficiency is improved; the density of the grid lines can be reduced under the condition that the cell conversion efficiency is not affected, and then the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a monocrystalline silicon solar cell with a specific positional relationship between an electrode grid line and a textured pyramid structure. Background technique [0002] Solar cells generate photo-generated carriers under light, in which photo-generated electrons are transported to the electrode grid through the surface of the cell and collected by the electrode grid. In addition, in order to enhance the absorption of sunlight by the silicon wafer, it is necessary to texture the surface of the silicon wafer. After texturing, a textured surface with a pyramid structure will be formed on the surface of the silicon wafer. In the process of photogenerated electrons traveling along the surface of the silicon wafer to the electrode grid lines, these pyramidal structures need to be crossed. Therefore, the relative position of the textured micro-pyramid structure of the silicon wa...

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): H01L31/0224
CPCH01L31/022425Y02E10/50
Inventor 陈培良符黎明张丽娟
Owner CHANGZHOU SHICHUANG ENERGY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products