Title:
WAVELENGTH CONVERTER AND WAVELENGTH CONVERSION MATERIAL USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/079907
Kind Code:
A1
Abstract:
The present invention is a wavelength converter, the wavelength converter including, as semiconductor nanoparticles, first semiconductor nanoparticles for converting light having a wavelength of 450 nm to light having a wavelength of λ1 nm, and second semiconductor nanoparticles for converting light having a wavelength of 450 nm to light having a wavelength of λ2 nm, the wavelength λ1 and the wavelength λ2 satisfying the expression λ1 > λ2 > 450, and the relationship between the light emission intensity I1b at the wavelength λ1 when a wavelength converter including the first semiconductor nanoparticles and the second semiconductor nanoparticles is irradiated with light having a number of excitation light quanta of N0 at a wavelength of 450 nm and the light emission intensity I1a at the wavelength λ1 when a wavelength converter including only the first semiconductor nanoparticles as semiconductor nanoparticles is irradiated with light having a number of excitation light quanta of N0 at a wavelength of 450 nm satisfies the expression I1a < I1b. Through this configuration, there is provided a wavelength converter having enhanced absorptivity to blue light and light extraction efficiency after wavelength conversion.
Inventors:
TOBISHIMA KAZUYA (JP)
NOJIMA YOSHIHIRO (JP)
AOKI SHINJI (JP)
NOJIMA YOSHIHIRO (JP)
AOKI SHINJI (JP)
Application Number:
PCT/JP2022/037830
Publication Date:
May 11, 2023
Filing Date:
October 11, 2022
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
G02B5/20; C09K11/02; C09K11/08; C09K11/62; C09K11/70; C09K11/88; H01L33/50
Foreign References:
| JP2016114846A | 2016-06-23 | |||
| JP2020021074A | 2020-02-06 | |||
| US20200332186A1 | 2020-10-22 | |||
| US20190211262A1 | 2019-07-11 | |||
| JP2020193249A | 2020-12-03 | |||
| JP2017122175A | 2017-07-13 | |||
| US20150014728A1 | 2015-01-15 | |||
| JP2018044142A | 2018-03-22 | |||
| CN102660288A | 2012-09-12 |
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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