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

Full-back-electrode solar cell structure and preparation method therefor

A solar cell, full-back electrode technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of complex process, rising series resistance, etc., and achieve the effect of avoiding compounding, maintaining fill factor, and reducing process steps

Inactive Publication Date: 2016-03-09
TRINA SOLAR CO LTD
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although local openings reduce the area of ​​the metal contact area as a means, it does not eradicate the high recombination at the openings, and it makes the process more complicated and easily leads to an increase in series resistance

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
  • Full-back-electrode solar cell structure and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0048] Such as figure 1 As shown, a full back pole solar cell structure, it includes:

[0049] battery substrate 1;

[0050] a tunneling passivation layer 2, the tunneling passivation layer 2 is arranged on the back side of the battery substrate 1;

[0051] A polysilicon layer, the polysilicon layer is disposed on the lower surface of the tunnel passivation layer 2 , and the polysilicon layer has an N-type heavily doped polysilicon layer 31 and a P-type polysilicon layer 32 arranged side by side.

[0052] The full back pole solar cell structure also includes an electrode layer, the electrode layer is arranged on the lower surface of the polysilicon layer, and the electrode layer has a negative electrode 41 in contact with the N-type heavily doped...

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 full-back-electrode solar cell structure and a preparation method therefor. The full-back-electrode solar cell structure comprises a cell substrate, a tunneling passivation layer, and a polycrystalline silicon layer, wherein the tunneling passivation layer is arranged on the back surface of the cell substrate; the polycrystalline silicon layer is arranged on the lower surface of the tunneling passivation layer; and the polycrystalline silicon layer is provided with an N type heavily-doped polycrystalline silicon layer and a P type polycrystalline silicon layer that are arranged side by side. According to the full-back-electrode solar cell structure, the silicon body is good in the surface passivation effect, and carriers can be selectively output, so that the efficiency of the full-back-electrode solar cell is improved.

Description

technical field [0001] The invention relates to an all-back electrode solar cell structure and a preparation method thereof. Background technique [0002] At present, solar photovoltaic is becoming the mainstream form of new energy in the future. With the continuous improvement of the industrial chain, the biggest challenge for the photovoltaic industry at present is how to reduce the manufacturing cost while improving the conversion efficiency of solar cells. As a kind of high-efficiency solar cell, the full-back solar cell has no grid electrodes on the front, and the positive and negative electrodes are on the back of the cell, which effectively reduces the front shading loss and improves the efficiency of the solar cell. At present, Trina Solar and the Australian National University have jointly developed a light-receiving area of ​​4cm 2 , Efficiency of 24.4% of the world record for all back solar cells. However, the process of all-back solar cells is complicated, and...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/0216H01L31/0352H01L31/18
CPCH01L31/0216H01L31/02167H01L31/0224H01L31/022441H01L31/0352H01L31/18Y02E10/50Y02P70/50
Inventor 端伟元王子港崔艳峰杨阳陈奕峰
Owner TRINA SOLAR 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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com