Up-conversion luminescence material, and preparation method and application thereof

A technology of luminescent materials and reactions, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve problems such as complex device structures, and achieve high luminous efficiency, high light transmittance, and good stability

Active Publication Date: 2016-06-22
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One of the purposes of the present invention is to provide an up-conversion fluorescent material to overcome the problem of complex device structures existing when the up-conversion fluorescent material is combined with an organic optoelectronic device

Method used

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preparation example Construction

[0065] Another aspect of the present invention provides a method for preparing the above-mentioned up-conversion luminescent material, including:

[0066] (1) Rare earth ion-doped fluoride nanoparticles were prepared by thermal injection, and the rare earth ion-doped fluoride ink was obtained by washing and dispersing.

[0067] (2) Stir and immerse in the polymer solution for a long time to modify the surface of the fluoride nanoparticles doped with rare earth ions.

[0068] (3) Rapidly mixing and stirring the semiconductor metal oxide sol precursor solution and the rare earth ion-doped fluoride ink to obtain the composite sol ink.

[0069] In a feasible scheme, the implementation scheme specifically includes:

[0070] (1) Preparation of fluoride nanoparticles doped with rare earth ions by hot injection method: dissolving rare earth salts and alkali metal salts in high-boiling organic solvents, dissolving fluorine source and lye in methanol, and then injecting them into rare ...

Embodiment 1

[0079] Embodiment 1: NaYF based on rare earth ion doping 4 with Cr 3+ Preparation of Doped ZnO Composite and Its Application in Organic Solar Cells

[0080] Step 1. Preparation of NaYF 4 :Er 3+ -Yb 3+ Nanoparticles: Weigh 0.2mmol rare earth chloride in a 100ml three-necked flask, wherein Y 3+ :Yb 3+ :RE 3+ =80:18:2(RE 3+For up-converting luminescent ions), add 20ml oleylamine, heat to 120°C under magnetic stirring at 600rpm and keep it warm for 30 minutes. After the rare earth chloride is fully dissolved, the heating is stopped, so that the rare earth chloride solution is cooled to room temperature. Take 0.8mmolNH 4 Dissolve F and 0.6mmol NaOH in 5ml methanol and mix. Will NH 4 The mixed solution of F and NaOH was quickly injected into the three-necked flask containing the rare earth chloride solution, and then the temperature was raised to 70°C at a rate of 5°C / min, and kept at this temperature for 30 minutes, so that the methanol solvent was completely removed. A...

Embodiment 2

[0088] Embodiment 2: Based on BaF 2 :Tm 3+ ,Yb 3+ and MoO 3 :Ni 2+ Preparation of Composite Upconversion Phosphor Layer and Its Application in Organic Solar Cells

[0089] Step 1. first prepare Tm according to the similar method of embodiment 1 3+ -Yb 3+ Codoped BaF 2 nanoparticles. That is, take 0.2mmol of barium chloride and 0.01mmol of rare earth chloride dissolved in a 100ml three-necked flask, whose Yb:RE=4:1, add 20ml of oleylamine, heat to 120°C under magnetic stirring at 600rpm and keep it warm for 30 minutes. After the chloride is fully dissolved, the heating is stopped, so that the rare earth chloride solution is cooled to room temperature. Take 0.8mmolNH 4 Dissolve F and 0.6mmol NaOH in 5ml methanol and mix. Will NH 4 The mixed solution of F and NaOH was quickly injected into the chloride solution. Afterwards, the temperature was raised to 70° C. at a rate of 5° C. / min, and kept at this temperature for 30 minutes, so that the methanol solvent was complet...

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Abstract

The invention relates to an up-conversion luminescence material, and a preparation method and an application thereof. The up-conversion luminescence material includes at least one rare earth ion doped fluoride nanoparticle, at least one transition metal ion doped semiconductor metal oxide nanoparticle and at least one polymer mainly modified on the surface of the fluoride nanoparticle and used as a connecting medium between the fluoride nanoparticle and the semiconductor metal oxide nanoparticle. The invention also discloses the preparation method of the up-conversion luminescence material. The up-conversion luminescence material has the advantages of high luminescence efficiency, good stability, high light transmittance and high charge transfer ability, can effectively improve the photon utilization rate of organic photoelectric conversion devices in the infrared region, greatly improves the charge transfer of the interfaces of the devices, and has wide application prospect in various organic photoelectric conversion devices.

Description

field of invention [0001] The invention particularly relates to an up-conversion luminescent material, and its preparation method and application belong to the field of new energy and new materials. Background technique [0002] Organic photoelectric materials have the advantages of low material cost, simple manufacturing process, and lightness, and have great development potential in flexible electronic devices, photovoltaic-building integration, etc. However, the wide bandgap of organic optoelectronic materials, generally 2.0eV, limits its utilization of near-red-infrared photons. In the solar spectrum, the energy of near-infrared-infrared light (λ>700nm) accounts for 52% of the energy of the entire solar spectrum, so it is of great significance to improve the response ability of organic optoelectronic devices to the near-infrared-infrared light band. [0003] Upconversion (UC) spectral conversion, by converting two or more low-energy photons into one high-energy photo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/86C09K11/02H01L51/46
CPCY02E10/549
Inventor 骆群武娜马昌期
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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