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Rare earth doped perovskite nanocrystal, preparation method thereof and photoelectric detector

A photoelectric detector and rare earth doping technology, which is applied in photometry, nano optics, nanotechnology, etc. using electric radiation detectors, can solve problems such as response and difficult ultraviolet wavelengths, achieve high-efficiency luminescence, improve luminous efficiency, Improve the effect of the glow effect

Active Publication Date: 2020-10-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a rare earth-doped perovskite nanocrystal, which aims to solve the problem that it is difficult to respond to ultraviolet wavelengths in current commercial photodetectors

Method used

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  • Rare earth doped perovskite nanocrystal, preparation method thereof and photoelectric detector
  • Rare earth doped perovskite nanocrystal, preparation method thereof and photoelectric detector
  • Rare earth doped perovskite nanocrystal, preparation method thereof and photoelectric detector

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Embodiment 1

[0035] This embodiment provides a rare earth doped perovskite nanocrystal, the rare earth doped perovskite nanocrystal is based on CsPbF 3 perovskite nanocrystals as the host material, and through the Yb 3+ ions and Mn 2+ Metal ion doped CsPbF 3 Pb sites of perovskite nanocrystals obtained.

[0036] Specifically, the preparation method of the rare earth-doped perovskite nanocrystal comprises the following steps:

[0037] (1) Add 0.8g of cesium carbonate, 30mL of octadecene and 2.5mL of oleic acid into the three-necked flask, and heat the three-necked flask in an oil bath at 120°C, and stir until the cesium carbonate is completely dissolved , to obtain cesium oleate precursor solution.

[0038] (2) Add 0.15gPbF 2 , 1.5mL oleic acid, 1.5mL oleylamine, 15mL octadecene, appropriate amount of YbF 3 and an appropriate amount of MnF 2 Add it into another three-necked flask, heat to 110°C under nitrogen protection, and stir until completely dissolved to obtain a mixed solution....

Embodiment 2

[0041] This embodiment provides a rare earth doped perovskite nanocrystal, the rare earth doped perovskite nanocrystal is based on CsPbBr 3perovskite nanocrystals as the host material, and through the Yb 3+ ions and Cd 2+ Metal ion doped CsPbBr 3 Pb sites of perovskite nanocrystals obtained.

[0042] Specifically, the preparation method of the rare earth-doped perovskite nanocrystal comprises the following steps:

[0043] (1) Add 0.8g of cesium carbonate, 30mL of octadecene and 2.5mL of oleic acid into the three-necked flask, and heat the three-necked flask in an oil bath at 120°C, and stir until the cesium carbonate is completely dissolved , to obtain cesium oleate precursor solution.

[0044] (2) 0.15gPbBr 2 , 1.5mL oleic acid, 1.5mL oleylamine, 15mL octadecene, appropriate amount of YbBr 3 and an appropriate amount of CdBr 2 Add it into another three-necked flask, heat to 130°C under nitrogen protection, and stir until completely dissolved to obtain a mixed solution....

Embodiment 3

[0047] This embodiment provides a rare earth doped perovskite nanocrystal, the rare earth doped perovskite nanocrystal is based on CsPbI 3 perovskite nanocrystals as the host material, and through the Yb 3+ Ions and Ni 2+ Metal ion doped CsPbI 3 Pb sites of perovskite nanocrystals obtained.

[0048] Specifically, the preparation method of the rare earth-doped perovskite nanocrystal comprises the following steps:

[0049] (1) Add 0.8g of cesium carbonate, 30mL of octadecene and 2.5mL of oleic acid into the three-necked flask, and heat the three-necked flask in an oil bath at 120°C, and stir until the cesium carbonate is completely dissolved , to obtain cesium oleate precursor solution.

[0050] (2) 0.15gPbI 2 , 1.5mL oleic acid, 1.5mL oleylamine, 15mL octadecene, appropriate amount of YbI 3 and an appropriate amount of NiI 2 Add it into another three-necked flask, heat to 120°C under nitrogen protection, and stir until completely dissolved to obtain a mixed solution.

...

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Abstract

The invention is applicable to the technical field of photoelectricity. The invention provides a rare earth doped perovskite nanocrystal, a preparation method thereof and a photoelectric detector. Therare earth doped perovskite nanocrystal is obtained by taking CsPbX3 perovskite nanocrystal as a matrix material and doping the Pb position of the CsPbX3 perovskite nanocrystal with Yb<3+> ions and metal ions, wherein the X position of the CsPbX3 perovskite nanocrystal is one of Cl, Br, I and F, and the metal ions are one of Mn<2+>, Cd<2+>, Ni<2+> and Cr<3+>. The rare earth doped perovskite nanocrystal provided by the embodiment of the invention has a good light-emitting effect and light-emitting stability, and is convenient to apply in practice. When the rare earth doped perovskite nanocrystal is applied to a photoelectric detector, the photoelectric detector can realize wide-band response with the wavelength of 200-1100nm, so that the application value of the photoelectric detector canbe improved.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a rare earth-doped perovskite nanocrystal, a preparation method thereof and a photoelectric detector. Background technique [0002] Commercial photodetectors have been widely used in the fields of electronic information, artificial intelligence, smart cities, and aerospace. However, the spectral response capabilities of commercial photodetectors are mainly concentrated in the visible and near-infrared regions of 400-1100 nm, and they basically have no response capabilities to the ultraviolet response region. [0003] Therefore, it is difficult for current commercial photodetectors to respond to ultraviolet wavelengths. Contents of the invention [0004] The purpose of the embodiments of the present invention is to provide a rare-earth-doped perovskite nanocrystal, aiming at solving the problem that current commercial photodetectors are difficult to respond ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66G01J1/42B82Y30/00B82Y20/00
CPCB82Y20/00B82Y30/00C09K11/7773G01J1/429
Inventor 宋宏伟徐文丁楠白雪徐琳董彪
Owner JILIN UNIV
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