Title:
PEROVSKITE QUANTUM DOT COMPOSITE MATERIAL, INK, AND PEROVSKITE QUANTUM DOT COMPOSITE MATERIAL MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/022093
Kind Code:
A1
Abstract:
Provided are a perovskite quantum dot composite material manufacturing method that conveniently forms core-shell particles in a single-stage synthesis step, a perovskite quantum dot composite material that, by forming an ionic crystal layer comprising a halogen compound in a shell layer, suppresses surface flaws in perovskite quantum dots and has an extremely high PLQY, and an ink that includes said perovskite quantum dot composite material. The perovskite quantum dot composite material comprises core particles and a shell layer that is present so as to cover the peripheries of the core particles, wherein the core particles comprise a halogenated metal perovskite, the shell layer comprises an organic halogen compound that has an ionic crystal structure with the same halogen composition as the core particles, the PLQY is 75% or greater, and the quantity of variation in light emission wavelength at room temperature during a period until 10,000 minutes have elapsed is 5 nm or less.
Inventors:
ASAKURA SATOSHI (JP)
SATO TAKAHIRO (JP)
MASUHARA AKITO (JP)
SATO RYOTA (JP)
OSHITA NAOAKI (JP)
KIKUCHI KEISUKE (JP)
SATO TAKAHIRO (JP)
MASUHARA AKITO (JP)
SATO RYOTA (JP)
OSHITA NAOAKI (JP)
KIKUCHI KEISUKE (JP)
Application Number:
PCT/JP2022/030583
Publication Date:
February 23, 2023
Filing Date:
August 10, 2022
Export Citation:
Assignee:
ISE CHEMICALS CORP (JP)
UNIV YAMAGATA NAT UNIV CORP (JP)
UNIV YAMAGATA NAT UNIV CORP (JP)
International Classes:
C09K11/08; B82Y20/00; B82Y40/00; C09D11/00; C09K11/66
Domestic Patent References:
| WO2017221833A1 | 2017-12-28 |
Foreign References:
| CN113025312A | 2021-06-25 | |||
| CN111500287A | 2020-08-07 | |||
| CN111349429A | 2020-06-30 | |||
| US20180002354A1 | 2018-01-04 |
Other References:
LIN HECHUN, ZHANG XU, CAI LELE, LAO JIE, QI RUIJUAN, LUO CHUNHUA, CHEN SHIYOU, PENG HUI, HUANG RONG, DUAN CHUNGANG: "High-stability fluorescent perovskites embedded in PbBrOH triggered by imidazole derivatives in water", JOURNAL OF MATERIALS CHEMISTRY C, vol. 8, no. 16, 1 January 2020 (2020-01-01), GB , pages 5594 - 5599, XP093036098, ISSN: 2050-7526, DOI: 10.1039/D0TC00939C
Attorney, Agent or Firm:
KINOSHITA Shigeru (JP)
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