Compound structure with function of improving wide-spectrum light absorption efficiency

A composite structure, wide-spectrum light technology, applied in optics, optical components, instruments, etc., can solve the problems of light absorption enhancement and achieve the effect of improving the efficiency of wide-spectrum light absorption

Active Publication Date: 2015-04-08
TAIYUAN UNIV OF TECH
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem that the existing structure only achieves light absorption enhancement in a narrow band and is lower than the Yablonovitch limit

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
  • Compound structure with function of improving wide-spectrum light absorption efficiency
  • Compound structure with function of improving wide-spectrum light absorption efficiency
  • Compound structure with function of improving wide-spectrum light absorption efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] specific implementation plan

[0041] In order to make the purpose, technical solution and effect of the present invention clearer, the specific implementation manner of the present invention will be further described below in conjunction with the drawings and specific examples.

[0042] We propose a composite structure consisting of absorbing and reflecting layers. Random metal triangular grooves on the surface of the reflective layer increase the optical path, thereby enhancing light diffraction and scattering. By introducing metal random triangular grooves, great light absorption and electric field enhancement are achieved, and the light absorption even exceeds the Yablonovitch limit. And for TM mode and TE mode, the absorption efficiency is insensitive to polarization and angle changes. At the same time, it achieves efficient absorption in the near ultraviolet to infrared band. This structure has great application prospects in the design of solar cells, photoelec...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a compound structure with a function of improving the wide-spectrum light absorption efficiency. The compound structure comprises absorbing layers and reflecting layers which are compounded with one another. The absorbing layers are of photonic crystal structures, and periodic triangular grooves in the surfaces of nonmetal materials are filled with thin polymer films or thin films with colloidal quantum dots to form the photonic crystal structures; metal materials are coated on the surfaces of random triangular grooves in the bottom surfaces of the nonmetal materials to form the reflecting layers. The compound structure has the advantages that efficient absorption of broadband and wide-angle solar energy in wavebands which cover the ranges from ultraviolet waves to infrared waves can be improved by the aid of the compound structure, the infrared wavebands exceed Yablonovitch limit, electric fields in the triangular grooves in the surfaces of the absorbing layers and in cavities formed by the reflecting layers and the triangular grooves in the surfaces of the absorbing layers can be greatly strengthened, and the compound structure has an excellent application prospect in the aspects of solar cells, photoelectric detection, military stealth and the like.

Description

technical field [0001] The invention relates to a compound structure composed of an absorbing layer and a reflective layer, in particular to a compound structure containing a photon crystal structure and a random metal triangular groove reflective structure to improve wide-spectrum light absorption efficiency. Background technique [0002] Achieving efficient broadband electromagnetic wave absorption is very important in the fields of solar cells, photoelectric detection, and military stealth. [0003] In 1982, Yablonovitch proposed the light absorption limit in homogeneous semiconductor thin films. However, the Yablonovitch limit is only applicable to geometric optics, but in micro-nano structures, diffraction, reflection and refraction work together, and light absorption can exceed the Yablonovitch limit. At present, scientists have proposed many light-coupling structures containing noble metal materials to enhance solar light absorption. These coupling structures are div...

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): G02B5/00G02B5/12
CPCG02B5/003G02B5/122
Inventor 陈智辉乔娜杨毅彪费宏明刘欣王云才
Owner TAIYUAN UNIV OF TECH
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