Perovskite quantum dot gel and preparation method thereof

A quantum dot and perovskite technology, applied in the field of perovskite quantum dot gel and its preparation, to achieve good backlight display application, good transparency, and improved stability

Inactive Publication Date: 2017-05-17
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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After searching, there is no public report on the silica-coated perovskite quantum dot gel and its preparation.

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  • Perovskite quantum dot gel and preparation method thereof
  • Perovskite quantum dot gel and preparation method thereof
  • Perovskite quantum dot gel and preparation method thereof

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[0023] The preparation and implementation process and test results of the silica-coated perovskite quantum dot gel described in the present invention will be further described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the following examples.

[0024] All chemicals in the present invention were not further purified, including: cesium carbonate (99.9%), oleic acid (90%, Oleic acid referred to as OA), 3-aminopropyltriethoxysilane (98%, APTES) , Octadecene (90%, Octadecene, ODE for short), PbBr2 (99%), n-hexane (99.5%) and toluene (99.5%).

[0025] Preparation Examples:

[0026] The concrete steps of the preparation method of perovskite quantum dot gel of the present invention are as follows:

[0027] a. Preparation of cesium oleate: Add 0.80 g of cesium carbonate, 2.5 ml of OA and 30 ml of ODE into a 100 ml three-neck round bottom flask respectively, degas under vacuum for 10 minutes, then heat to ...

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Abstract

The invention relates to perovskite quantum dot gel and a preparation method thereof. The method comprises the following steps of mixing octadecene and PbX2 (0.138g of PbBr2 in green quantum dots, 0.105g of PbI2 and 0.052g of PbBr2 in red quantum dots), degassing in vacuum, heating at 120 DEG C for an hour, and putting the ODE and PbX2 mixture into a nitrogen environment; adding oleic acid and APTES, adding cesium oleate prepared in the step a at 145 DEG C, cooling to room temperature, stirring and hydrolyzing so as to form a silicon dioxide-coated perovskite quantum dot sol solution; and drying to obtain the silicon dioxide-coated perovskite quantum dot gel. The prepared perovskite quantum dot gel has good transparency and flexibility and high quantum yield, and the long-term stability can be kept in a protonic solvent.

Description

technical field [0001] The invention relates to the field of perovskite quantum dot luminescent materials, in particular to a perovskite quantum dot gel and a preparation method thereof. [0002] technical background [0003] In recent years, perovskite quantum dots have become a new member of the "quantum dot family", with outstanding features such as narrow emission wavelength, adjustable color, high quantum yield, adjustable band gap and narrow-band emission. New quantum dot materials with growth potential. And because of its excellent intrinsic optical properties, it opens up potential applications in display, lighting, and laser fields. [0004] At present, perovskite quantum dots are mainly used in optoelectronic devices such as light-emitting diodes and solar cells in two forms, solution and phosphor, but poor stability has always restricted the development of perovskite quantum dots. [0005] Using 3-aminopropyltriethoxysilane (3-Aminopropyltriethoxysilane, APTES, C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/66C01G21/00B82Y20/00B82Y30/00B82Y40/00
CPCB82Y20/00B82Y30/00B82Y40/00C01G21/006C01P2004/64C09K11/025C09K11/665
Inventor 张宇陈真孙春于伟泳张铁强
Owner JILIN UNIV
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