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

Light-focusing device and manufacturing method thereof as well as solar cell system

A technology of a solar cell and a concentrating device, which is applied in the field of light energy, can solve the problems of aging, difficulty in absorbing and utilizing light, and low photoelectric conversion efficiency of solar cells.

Active Publication Date: 2013-07-03
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reflection band of the metal film is relatively wide, and it can reflect light waves in a specific band of incidence at various angles, but the reflectivity is relatively low, and the energy loss of light waves is large
The dielectric film layer can only reflect light waves incident at a specific angle, and the reflection band of the film layer is relatively narrow.
[0005] At present, the absorption wavelength of most solar cells can only cover the visible region, while other wavelengths are difficult to absorb and utilize. For example, ultraviolet light, which accounts for about 7% of sunlight, is rarely utilized.
On the one hand, this will lead to low photoelectric conversion efficiency of solar cells
On the other hand, under the irradiation of high-energy ultraviolet light, if they cannot be reasonably absorbed and utilized by the solar cell, it will have adverse effects on the cell such as carrier thermal effect, which further limits the conversion efficiency of the solar cell, resulting in a lower conversion efficiency of the solar cell. Drops and performance degradation
In addition, the current encapsulation materials of solar cells are mainly potted with epoxy resin and other materials, which are prone to yellowing and aging under long-term exposure to ultraviolet light, thus affecting the service life of solar cells

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
  • Light-focusing device and manufacturing method thereof as well as solar cell system
  • Light-focusing device and manufacturing method thereof as well as solar cell system
  • Light-focusing device and manufacturing method thereof as well as solar cell system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The structure of the light concentrating device of this embodiment is as follows: figure 1 As shown, wherein the concentrating substrate 100 adopts concave glass with a parabolic concave surface of revolution 101, and the photonic crystal layer 300 adopts monodisperse polymer latex particles with a hard core-soft shell structure, and the particle size of the particles is about 650nm. The thickness of the crystal layer 300 is about 1000 nanometers. The down conversion material of the down conversion layer 200 is poly-N-vinylacetamide europium(III) which is a rare earth co-luminescent organic complex. The thickness of the down conversion layer 200 is about 0.1 μm.

[0046] The specific manufacturing process of the light concentrating device of the above-mentioned embodiment is as follows:

[0047] (1) Prepare a piece of concave glass as a substrate, wash it and dry it for later use;

[0048](2) according to the preparation method that the Chinese patent that application ...

Embodiment 2

[0051] The structure of the light concentrating device of this embodiment is as follows: figure 1 As shown, wherein the concentrating substrate 100 adopts concave organic glass with a parabolic concave surface of revolution 101, and the photonic crystal layer 300 adopts monodisperse polymer latex particles with a hard core-soft shell structure, and the particle size of the particles is about 500nm. The thickness of the photonic crystal layer 300 is about 1000 nanometers, and the down conversion material of the down conversion layer 200 is Eu 3+ Doped LiGdF 4 As a thin film, the thickness of the down conversion layer 200 is about 20 μm.

[0052] The specific manufacturing process of the light concentrating device of the above-mentioned embodiment is as follows:

[0053] (1) Prepare a piece of concave plexiglass as a substrate, clean it and dry it for later use;

[0054] (2) According to the preparation method provided by the Chinese patent with the application number 2005100...

Embodiment 3

[0057] The structure of the light concentrating device of this embodiment is as follows: figure 1 As shown, wherein the concentrating substrate 100 is made of concave plastic with a parabolic concave surface of revolution 101, and the photonic crystal layer 300 is made of SiO 2 and TiO 2 , the thickness of the photonic crystal layer 300 is about 480 nanometers, and the down conversion material of the down conversion layer 200 adopts Y 3 al 5 o 12 : Ce 3+ , the thickness of the down conversion layer 200 is about 10 μm.

[0058] The specific manufacturing process of the light concentrating device of the above-mentioned embodiment is as follows:

[0059] (1) Prepare a piece of concave plastic as the substrate, wash it and dry it for later use;

[0060] (2) According to the preparation method provided by the Chinese patent application number 200410018081, SiO is alternately grown on the substrate by ultra-high vacuum electron beam evaporation 2 and TiO 2 Thin film, 8 layer...

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the light energy technology, and provides a light-focusing device and a manufacturing method thereof. The light-focusing device comprises a light-focusing substrate, the light-focusing substrate is provided with a rotary concave paraboloid, a photonic crystal layer is formed on the rotary concave paraboloid, a down-conversion layer is formed on the photonic crystal layer,and the down-conversion layer comprises a down-conversion material which can achieve a down-conversion effect on light spectrums. The invention also provides a solar cell system with the light-focusing device above. In the light-focusing device and the solar cell system, through setting the down-conversion layer, the sunlight-energy absorption / utilization ratio of the light-focusing device can beimproved; and through setting the photonic crystal layer, the light with specific frequencies can be reflected, and the whole visible light can be reflected totally, thereby greatly increasing the photoelectric conversion efficiency of the solar cell system. Meanwhile, the light-focusing device adopts a layered structure, so that the light-focusing device is simple in structure and not required to be equipped with complex parts, therefore, the light-focusing device has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of light energy, and in particular relates to a light concentrating device, a manufacturing method thereof and a solar cell system. Background technique [0002] Since the beginning of the 21st century, global energy issues and the ensuing environmental pollution and climate warming have become increasingly prominent and gradually intensified. Solar energy is considered to be one of the most promising renewable energy sources due to its outstanding advantages such as widespread and vast distribution, large amount of resources, no pollution, cleanliness, safety, and easy access. [0003] In recent years, energy technologies that utilize solar energy more widely, such as solar cells, directly convert sunlight energy into electrical energy, which is a feasible and effective method for utilizing solar energy. Solar cells have experienced nearly half a century of development, and their photoelectric conversion e...

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): G02B19/00G02B5/10G02F2/02H01L31/055
CPCY02E10/52
Inventor 周明杰黄杰汪磊
Owner OCEANS KING LIGHTING SCI&TECH 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