Title:
CORE-SHELL-TYPE SEMICONDUCTOR NANOPARTICLES, METHOD FOR PRODUCING SAME, AND LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/160093
Kind Code:
A1
Abstract:
Provided are core-shell-type semiconductor nanoparticles that each have a core and a shell disposed on the surface of the core, and that, upon being irradiated with light, emit light. The core includes a semiconductor that contains M1, M2 and Z, wherein: M1 includes at least one selected from the group consisting of Ag, Cu, and Au; M2 includes at least one selected from the group consisting of Al, Ga, In and Tl; and Z includes at least one selected from the group consisting of S, Se, and Te. The shell includes a semiconductor that contains a group 13 element and a group 16 element, and that has a greater bandgap energy than the core. The shell has disposed on the surface thereof a compound containing group 15 elements, said group 15 elements at least including P having a negative oxidation number.
Inventors:
KUWABATA SUSUMU (JP)
UEMATSU TARO (JP)
WAJIMA KAZUTAKA (JP)
TORIMOTO TSUKASA (JP)
KAMEYAMA TATSUYA (JP)
OYAMATSU DAISUKE (JP)
UEMATSU TARO (JP)
WAJIMA KAZUTAKA (JP)
TORIMOTO TSUKASA (JP)
KAMEYAMA TATSUYA (JP)
OYAMATSU DAISUKE (JP)
Application Number:
PCT/JP2019/005610
Publication Date:
August 22, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
UNIV OSAKA (JP)
UNIV NAGOYA NAT UNIV CORP (JP)
NICHIA CORP (JP)
UNIV NAGOYA NAT UNIV CORP (JP)
NICHIA CORP (JP)
International Classes:
C09K11/08; B82Y20/00; B82Y40/00; C01G15/00; C09K11/62; C09K11/64; C09K11/88; H01L33/50
Domestic Patent References:
| WO2018159699A1 | 2018-09-07 |
Foreign References:
| JP2016196631A | 2016-11-24 | |||
| JP2014169421A | 2014-09-18 | |||
| JP2018044142A | 2018-03-22 | |||
| JP2018039971A | 2018-03-15 |
Other References:
KUWABATA, SUSUMU ET AL: "Band-edge photoluminescence from Ag 工nS2 colloidal quantum dots by the formation of 工工工-V 工 semiconductor shells", PROCEEDINGS OF THE 78TH JSAP AUTUMN MEETING, 25 August 2017 (2017-08-25), pages 8p-A414-6
KAMEYAMA TATSUYA ET AL.: "Wavelength-Tunable Band-Edge Photoluminescence of Nonstoichiometric Ag-In-S Nanoparticles via Ga3+ Doping", ACS APPLIED MATERIALS & INTERFACES, vol. 10, no. 49, 3 December 2018 (2018-12-03), pages 42844 - 42855, XP055634907
UEMATSU TARO ET AL.: "Narrow band-edge photoluminescence from AgInS2 semiconductor nanoparticles by the formation of amorphous III-VI semiconductor shells", NPG ASIA MATERIALS, vol. 10, no. 8, 7 August 2018 (2018-08-07), pages 713 - 726, XP055634909
KAMEYAMA TATSUYA ET AL.: "Wavelength-Tunable Band-Edge Photoluminescence of Nonstoichiometric Ag-In-S Nanoparticles via Ga3+ Doping", ACS APPLIED MATERIALS & INTERFACES, vol. 10, no. 49, 3 December 2018 (2018-12-03), pages 42844 - 42855, XP055634907
UEMATSU TARO ET AL.: "Narrow band-edge photoluminescence from AgInS2 semiconductor nanoparticles by the formation of amorphous III-VI semiconductor shells", NPG ASIA MATERIALS, vol. 10, no. 8, 7 August 2018 (2018-08-07), pages 713 - 726, XP055634909
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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