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

Methods for controlling optical property of wavelength conversion sheet and for producing wavelength conversion sheet, wavelength conversion sheet for cadmium telluride solar cell, and cadmium telluride solar cell

A technology of wavelength conversion and optical properties, which is applied in the field of cadmium telluride solar cells, can solve the problems of small Stokes shift, poor weather resistance, and low luminous efficiency, and achieve less reabsorption, high luminous efficiency, photoelectric Excellent conversion efficiency

Inactive Publication Date: 2010-12-08
NITTO DENKO CORP
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, although organic phosphors are excellent in transparency, they are poor in weather resistance, and in many cases, the shape of the absorption and emission spectra is broad, and there is a problem that the Stokes shift is small and the reabsorption is large, that is, "the luminous efficiency is not so high".

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
  • Methods for controlling optical property of wavelength conversion sheet and for producing wavelength conversion sheet, wavelength conversion sheet for cadmium telluride solar cell, and cadmium telluride solar cell
  • Methods for controlling optical property of wavelength conversion sheet and for producing wavelength conversion sheet, wavelength conversion sheet for cadmium telluride solar cell, and cadmium telluride solar cell
  • Methods for controlling optical property of wavelength conversion sheet and for producing wavelength conversion sheet, wavelength conversion sheet for cadmium telluride solar cell, and cadmium telluride solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Polymethyl methacrylate resin (PMMA) (manufactured by Kuraray, trade name "PARAPET EH-1000P") was dissolved in toluene to prepare a 26% by weight transparent resin solution. Then, using "LUMOGEN F Yellow 083" (a fluorescent dye manufactured by BASF Corporation) as a phosphor, 0.3 g of this phosphor was dissolved in 9.7 g of methylene chloride to prepare a phosphor solution. Furthermore, this phosphor has a cyano group in the molecule. 10 g of the above-mentioned transparent resin solution and 0.61 g of the above-mentioned phosphor solution were mixed to prepare a varnish containing 0.7% by weight of the above-mentioned phosphor with respect to PMMA. The varnish was coated on a PET separator, and dried at 90° C. for 15 minutes to prepare a wavelength conversion sheet for a cadmium telluride solar cell with a thickness of 48 μm.

Embodiment 2

[0059] 10 g of the transparent resin solution prepared in the same manner as in Example 1 and 0.87 g of the phosphor solution prepared in the same manner as in Example 1 were mixed to prepare a varnish containing 1% by weight of the phosphor with respect to PMMA. The varnish was coated on a PET separator, and dried at 90° C. for 15 minutes to prepare a wavelength conversion sheet for a cadmium telluride-based solar cell with a thickness of 25 μm.

Embodiment 3

[0061] 10 g of the transparent resin solution prepared in the same manner as in Example 1 and 1.30 g of the phosphor solution prepared in the same manner as in Example 1 were mixed to prepare a varnish containing 1.5% by weight of the phosphor with respect to PMMA. The varnish was coated on a PET separator, and dried at 90° C. for 15 minutes to prepare a wavelength conversion sheet for a cadmium telluride-based solar cell with a thickness of 19 μm.

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 present invention provides a method for controlling an optical property of a wavelength conversion sheet. The method is a method for controlling an optical property of a wavelength conversion sheet that contains a transparent resin and a phosphor and achieves wavelength conversion by absorbing light in a specific wavelength range other than a target wavelength range and emitting light in a target wavelength range, wherein the phosphor contains a phosphor having a perylene skeleton, and a stokes shift of the wavelength conversion sheet is controlled by adjusting a concentration of the phosphor having a perylene skeleton to the transparent resin in a range of 0.5% to 3.5% by weight.

Description

technical field [0001] The invention relates to an optical characteristic control method of a wavelength conversion sheet, a manufacturing method of the wavelength conversion sheet, a wavelength conversion sheet for a cadmium telluride solar cell, and a cadmium telluride solar cell. Background technique [0002] Various methods have been studied for improving the photoelectric conversion efficiency of solar cells. Among them, as technologies for improving photoelectric conversion efficiency through effective use of sunlight, there are, for example, concentrating technology, multi-junction technology, wavelength conversion by absorbing light of a specific wavelength band other than the target wavelength band and emitting light of the target wavelength band Conversion technology (solar light spectrum conversion technology), etc. Among them, wavelength conversion technology using phosphors has been studied in Japan from the latter half of the 1990s to the first half of the 200...

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): H01L31/055H01L31/04
CPCC09K2211/1011Y02E10/52H01L51/447H01L31/055H01L31/02322Y02E10/543C09K11/06Y02E10/549H10K30/87
Inventor 坂本亨枝长泽德
Owner NITTO DENKO CORP
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