Unlock instant, AI-driven research and patent intelligence for your innovation.

Three-junction cascaded solar cell and its preparation method

A solar cell, three-junction technology, applied in the field of solar cells, can solve the problems of manufacturing process complexity, increase cell manufacturing cost, etc., and achieve the effects of reducing manufacturing difficulty, improving cell efficiency, and reducing production cost

Active Publication Date: 2015-09-09
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a triple-junction cascaded solar cell and its preparation method to solve the problems in the prior art that the production cost of the battery and the complexity of the manufacturing process will be increased in order to obtain a high-efficiency triple-junction solar cell

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
  • Three-junction cascaded solar cell and its preparation method
  • Three-junction cascaded solar cell and its preparation method
  • Three-junction cascaded solar cell and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The triple-junction cascaded solar cell provided by the present invention and its preparation method will be described in detail below with reference to the accompanying drawings.

[0022] Firstly, the specific implementation manner of the triple-junction cascaded solar cell of the present invention is given with reference to the accompanying drawings.

[0023] Reference attached figure 1 , 2 As shown, among them, figure 1 It is a structural schematic diagram of the three-junction cascaded solar cell provided by this specific embodiment grown in a front-mounted manner, figure 2 for figure 1 The structural schematic diagram of the finished product of the three-junction cascaded solar cell is shown, and the attached figure 1 , 2 The structure shown is described in detail.

[0024] In the study of GaAs materials, it is found that the doping of N and Bi can adjust the bandwidth and lattice constant of the material, so the GaNAsBi quaternary material can have ideal ba...

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 provides a triple-junction cascade solar cell. The triple-junction cascade solar cell comprises a GaNAsBi bottom battery, a first tunnel junction, a GaNAsBi middle battery, a second tunnel junction, and an AlGaAs top battery, wherein the GaNAsBi bottom battery, the first tunnel junction, the GaNAsBi middle battery, the second tunnel junction, and the AlGaAs top battery are connected on a GaAs substrate in sequence. Electrodes are respectively installed on the e AlGaAs top battery and the GaAs substrate. All sub-battery lattice constants are matched with the GaAs substrate. Production cost is reduced. Preparation process is simple. Band gap combinations are about 1.93eV, about 1.39eV and about 0.94eV. Higher open-circuit voltages are provided and heat loss in photovoltaic conversion process is reduced and battery efficiency is improved. The triple-junction cascade solar cell utilizes a front installation method to deposit. The complex process that the GaAs substrate is eliminated after an inversion deposition battery structure needs to be bonded with other supporting substrate materials is avoided. Manufacture difficulty of batteries is reduced.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a bismuth-containing GaAs-based triple-junction cascaded solar cell and a preparation method thereof. The triple-junction solar cell has an optimized band-gap combination, can realize full utilization of the solar spectrum, and has relatively High battery efficiency. Background technique [0002] In the development process of III-V compound semiconductor solar cells, in order to improve the conversion efficiency of the cells, it is necessary to divide the solar spectrum and use matching sub-cells with different bandgap widths to connect them in series to achieve full utilization of sunlight. Purpose. In triple-junction solar cells, the currently researched relatively mature system is the lattice-matched growth of GaInP / GaAs / Ge (1.9 / 1.42 / 0.7eV) triple-junction solar cells. 32-33% (one sun). Calculations show that the efficiency of triple-junction solar cells with 1.93eV / 1.39eV / 0.94eV...

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 Patents(China)
IPC IPC(8): H01L31/0687H01L31/0693H01L31/18
CPCY02E10/50Y02E10/544Y02P70/50
Inventor 孙玉润董建荣李奎龙曾徐路于淑珍赵勇明赵春雨杨辉
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com