Silver nanoparticle-rare earth doped fluorescent material composite system for modulating solar spectrum and preparation method thereof

A solar spectrum and system technology, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve the problems of narrow absorption bandwidth, weak luminous intensity, and difficulty in practical application, and achieve low cost, enhanced luminous intensity, and preparation technology. simple effect

Active Publication Date: 2020-09-04
FUJIAN NORMAL UNIV
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Problems solved by technology

However, traditional quantum tailoring materials have problems such as narrow absorption bandwidth and weak luminous intensity as light conversion layers, making it difficult to be practical
[0003] At present, there is no relevant patent report on the noble metal nanoparticle-rare earth doped fluorescent material composite powder system that has broadband absorption, multiphoton emission and can be used to modulate the solar spectrum

Method used

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  • Silver nanoparticle-rare earth doped fluorescent material composite system for modulating solar spectrum and preparation method thereof
  • Silver nanoparticle-rare earth doped fluorescent material composite system for modulating solar spectrum and preparation method thereof
  • Silver nanoparticle-rare earth doped fluorescent material composite system for modulating solar spectrum and preparation method thereof

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Embodiment Construction

[0029] Ag NPs-NaBaPO for Modulating the Solar Spectrum 4 : Ce 3+ , Er 3+ The preparation method of composite system, comprises the steps:

[0030] 1) Preparation of NaBaPO by high temperature solid phase method 4 : Ce 3+ , Er 3+ Phosphor powder

[0031] 1-1) Raw material weighing: Weigh BaCO according to the molar ratio (total 2 mmol) 3 (analytical pure) (0.3081 g), Na 2 CO 3 (analytical pure) (0.106 g), (NH 4 ) 2 HPO 4 (analytical pure) (0.2641 g), CeO 2 (99.99%) powder (0.0034 g) and Er 2 o 3(99.99%) powder (0.0096 g);

[0032] 1-2) Grinding: Grind the raw materials fully in an agate mortar, and add appropriate amount of alcohol in time to make the raw materials mix more fully;

[0033] 1-3) High-temperature calcination: place the ground mixture in a muffle furnace, and calcine at a high temperature of 750-850˚C for 5.5-6.5 h in an air atmosphere;

[0034] 1-4) Sample collection: After the high temperature calcination is completed and naturally cooled to roo...

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Abstract

The invention discloses a silver nanoparticle-rare earth doped fluorescent material composite system for modulating a solar spectrum and a preparation method thereof. The composite system is an Ag NPs-NaBaPO4: Ce < 3 + >, Er < 3 + > composite system, NaBaPO4: Ce < 3 + >, Er < 3 + > fluorescent powder and Ag NPs are placed in an ion tube, an ethanol solution is added to mix the NaBaPO4: Ce < 3 + >,Er < 3 + > fluorescent powder and the Ag NPs, ultrasonic treatment is performed, and the mixture is poured into a mortar for drying to obtain Ag NPs doped NaBaPO4: Ce < 3 + >, Er < 3 + > fluorescentpowder to form the Ag NPs-NaBaPO4: Ce < 3 + >, Er < 3 + > composite system; the composite system has the broadband absorption characteristic, four-photon near-infrared quantum cutting light emitting can be achieved, the composite system is made into a light conversion layer to be placed on a solar cell, ultraviolet light which is absorbed by the solar cell at low efficiency in sunlight can be converted into near-infrared light which can be absorbed by the solar cell at high efficiency, and the photoelectric conversion efficiency of the solar cell is improved. And the photoelectric conversion efficiency of the germanium-based solar cell is effectively improved

Description

technical field [0001] The invention relates to the technical field of composite nanomaterials, in particular to silver nanoparticles-rare earth-doped fluorescent materials (Ag NPs-NaBaPO) for modulating the solar spectrum 4 : Ce 3+ , Er 3+ ) Composite system and its preparation method. Background technique [0002] Quantum tailoring refers to the luminescence phenomenon in which one high-energy photon is absorbed and two or more low-energy photons are emitted. The light conversion layer made of quantum tailoring material is placed on the solar cell, which can convert the ultraviolet light and part of the visible light that are inefficiently absorbed by the solar cell in sunlight into the near-infrared spectrum that can be efficiently absorbed by the solar cell, effectively improving the photoelectricity of the solar cell. conversion efficiency. However, traditional quantum tailoring materials have problems such as narrow absorption bandwidth and weak luminous intensity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71C09K11/58H01L31/055
CPCC09K11/7778C09K11/58H01L31/055Y02E10/52
Inventor 洪锦泉郑志强林林冯卓宏
Owner FUJIAN NORMAL UNIV
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