Title:
PREPARATION METHOD FOR METAL HALIDE PEROVSKITE QUANTUM DOTS WITH IMPROVED STABILITY, PREPARATION APPARATUS, AND SOLAR BATTERY COMPRISING METAL HALIDE PEROVSKITE QUANTUM DOTS PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2023/085509
Kind Code:
A1
Abstract:
The present invention relates to a preparation method for metal halide perovskite quantum dots with improved stability, a preparation apparatus, and a solar battery including metal halide perovskite quantum dots prepared thereby. The preparation method for metal halide perovskite quantum dots according to the present invention is: economical since it is performed at a relatively low temperature of 80 ℃ or less compared to existing hot injection methods and, as it is performed at normal pressure, does not require expensive vacuum equipment due to there being no requirement for a vacuum process; is easy for preparation since the preparation steps are not complicated; and is able to improve yield by improving stability even in the case of the metal halide perovskite quantum dots including iodide ions having low stability compared to other halogen atoms, by performing, before purification by adding a polar solvent to a dispersion containing the formed metal halide perovskite quantum dots, a step of removing unreacted reactants that are precipitated by centrifugation, thereby being able to be usefully applied to mass production of stabilized metal halide quantum dots for preparation of a solar battery.
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Inventors:
JANG JAE YOUNG (KR)
YANG HAN SOL (KR)
YANG HAN SOL (KR)
Application Number:
PCT/KR2021/019259
Publication Date:
May 19, 2023
Filing Date:
December 17, 2021
Export Citation:
Assignee:
IUCF HYU (KR)
International Classes:
B82B3/00; C09K11/02; H01L31/0216; B82Y20/00; B82Y40/00
Foreign References:
| KR20190073130A | 2019-06-26 | |||
| KR102243623B1 | 2021-04-23 |
Other References:
KEQIANG CHEN; QIAOHUI ZHONG; WEN CHEN; BINGHUA SANG; YINGWEI WANG; TINGQIANG YANG; YUELI LIU; YUPENG ZHANG; HAN ZHANG: "Short‐Chain Ligand‐Passivated Stable α‐CsPbI3 Quantum Dot for All‐Inorganic Perovskite Solar Cells", ADVANCED FUNCTIONAL MATERIALS, WILEY - V C H VERLAG GMBH & CO. KGAA, DE, vol. 29, no. 24, 10 April 2019 (2019-04-10), DE , pages n/a - n/a, XP072405676, ISSN: 1616-301X, DOI: 10.1002/adfm.201900991
DAVIS ANDREW H., LI SHUYA, LIN HANJIE, CHU CHUN, FRANCK JOHN M., LEEM GYU, MAYE MATHEW M., ZHENG WEIWEI: "Ligand-mediated synthesis of chemically tailored two-dimensional all-inorganic perovskite nanoplatelets under ambient conditions", JOURNAL OF MATERIALS CHEMISTRY C, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 9, no. 40, 21 October 2021 (2021-10-21), GB , pages 14226 - 14235, XP093065352, ISSN: 2050-7526, DOI: 10.1039/D1TC02931B
ZHOU SHU: "Rapid separation and purification of lead halide perovskite quantum dots through differential centrifugation in nonpolar solvent", RSC ADVANCES, vol. 11, no. 45, 16 August 2021 (2021-08-16), pages 28410 - 28419, XP093065354, DOI: 10.1039/D1RA04578D
DAVIS ANDREW H., LI SHUYA, LIN HANJIE, CHU CHUN, FRANCK JOHN M., LEEM GYU, MAYE MATHEW M., ZHENG WEIWEI: "Ligand-mediated synthesis of chemically tailored two-dimensional all-inorganic perovskite nanoplatelets under ambient conditions", JOURNAL OF MATERIALS CHEMISTRY C, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 9, no. 40, 21 October 2021 (2021-10-21), GB , pages 14226 - 14235, XP093065352, ISSN: 2050-7526, DOI: 10.1039/D1TC02931B
ZHOU SHU: "Rapid separation and purification of lead halide perovskite quantum dots through differential centrifugation in nonpolar solvent", RSC ADVANCES, vol. 11, no. 45, 16 August 2021 (2021-08-16), pages 28410 - 28419, XP093065354, DOI: 10.1039/D1RA04578D
Attorney, Agent or Firm:
E-SANG PATENT & TRADEMARK LAW FIRM (KR)
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