Title:
LEAD-FREE DOUBLE PEROVSKITE FOR ENHANCING ER ION PHOTOLUMINESCENCE AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/233115
Kind Code:
A1
Abstract:
Disclosed in the present invention are a lead-free double perovskite for enhancing Er ion photoluminescence and a preparation method therefor and the application thereof, which belong to the technical field of luminescent materials. The chemical formula of lead-free double perovskite is: Cs2AgIn1-x-yCrxEryCl6, wherein 0.00 < x ≤ 1.00, and 0.00 < y ≤ 1.00. Cs2AgInCl6 is taken as a matrix, luminescence centers are respectively trivalent Cr3+ and Er3+ ions, by means of the Er3+ ions, infrared light, the peak position of which is located at 1540 nm, is generated, and the quantum efficiency can reach 22.6％, which is increased by about 60 times compared with that of a single-doped material, such that the lead-free double perovskite has stronger near-infrared light emission. There is efficient absorption within the range of 250-900 nm, and there is a very wide excitation spectrum, such that ultraviolet light and visible light can be effectively absorbed. Energy of the lead-free double perovskite is precisely located in a low-loss window in optical fiber communications, such that the lead-free double perovskite can be widely applied to the fields of near-infrared LEDs, low-loss optical fiber communications and germanium-based solar cell materials.
Inventors:
WANG JING (CN)
GAN WEIJIANG (CN)
LOU SUNQI (CN)
CAO LUYU (CN)
GAN WEIJIANG (CN)
LOU SUNQI (CN)
CAO LUYU (CN)
Application Number:
PCT/CN2021/128247
Publication Date:
November 10, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
UNIV SUN YAT SEN (CN)
International Classes:
C09K11/62; H01L31/055; H01L33/50
Foreign References:
| CN113372905A | 2021-09-10 | |||
| CN107267147A | 2017-10-20 | |||
| CN108893108A | 2018-11-27 |
Other References:
HABIBUL ARFIN; JAGJIT KAUR; TARIQ SHEIKH; SUDIP CHAKRABORTY; ANGSHUMAN NAG: "Bi3+‐Er3+ and Bi3+‐Yb3+ Codoped Cs2AgInCl6 Double Perovskite Near‐Infrared Emitters", ANGEWANDTE CHEMIE, WILEY - V C H VERLAG GMBH & CO. KGAA, DE, vol. 132, no. 28, 31 March 2020 (2020-03-31), DE , pages 11403 - 11407, XP071381773, ISSN: 0044-8249, DOI: 10.1002/ange.202002721
ZHAO FANGYI, SONG ZHEN, ZHAO JING, LIU QUANLIN: "Double perovskite Cs 2 AgInCl 6 :Cr 3+ : broadband and near-infrared luminescent materials", INORGANIC CHEMISTRY FRONTIERS, vol. 6, no. 12, 3 December 2019 (2019-12-03), pages 3621 - 3628, XP093000212, DOI: 10.1039/C9QI00905A
XU JIAN, MURATA DAISUKE, KATAYAMA YUMIKO, UEDA JUMPEI, TANABE SETSUHISA: "Cr 3+ /Er 3+ co-doped LaAlO 3 perovskite phosphor: a near-infrared persistent luminescence probe covering the first and third biological windows", JOURNAL OF MATERIALS CHEMISTRY. B, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 5, no. 31, 1 January 2017 (2017-01-01), GB , pages 6385 - 6393, XP093000214, ISSN: 2050-750X, DOI: 10.1039/C7TB01332A
ZHAO FANGYI, SONG ZHEN, ZHAO JING, LIU QUANLIN: "Double perovskite Cs 2 AgInCl 6 :Cr 3+ : broadband and near-infrared luminescent materials", INORGANIC CHEMISTRY FRONTIERS, vol. 6, no. 12, 3 December 2019 (2019-12-03), pages 3621 - 3628, XP093000212, DOI: 10.1039/C9QI00905A
XU JIAN, MURATA DAISUKE, KATAYAMA YUMIKO, UEDA JUMPEI, TANABE SETSUHISA: "Cr 3+ /Er 3+ co-doped LaAlO 3 perovskite phosphor: a near-infrared persistent luminescence probe covering the first and third biological windows", JOURNAL OF MATERIALS CHEMISTRY. B, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 5, no. 31, 1 January 2017 (2017-01-01), GB , pages 6385 - 6393, XP093000214, ISSN: 2050-750X, DOI: 10.1039/C7TB01332A
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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