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Material having cooperative frequency light conversion performance and preparation method and application thereof

A performance and frequency technology, applied in the field of synergistic frequency conversion materials and its preparation, can solve the problems of photovoltaic device damage and thermal effects, and achieve the effects of eliminating thermal effects, low cost, and improving battery efficiency

Inactive Publication Date: 2011-01-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of thermal effects in the conversion process in the prior art and damage to photovoltaic devices, the present invention provides a material with synergistic frequency conversion performance and its preparation method and application. The preparation method is simple, and the material can simultaneously realize the above Two light conversion mechanisms, conversion and down conversion, significantly improve cell efficiency

Method used

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  • Material having cooperative frequency light conversion performance and preparation method and application thereof
  • Material having cooperative frequency light conversion performance and preparation method and application thereof
  • Material having cooperative frequency light conversion performance and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0038] The molecular formula of the synthetic fluoride with synergistic frequency conversion performance is Yb 0.90 Er 0.10 f 3 . The specific preparation method is: dissolve the rare earth element oxide Yb with hydrochloric acid 2 o 3 and Er 2 o 3 , configure 0.2mol / L of YbCl 3 and ErCl 3 solution, take 25.65ml of YbCl 3 and 3.865ml of ErCl 3 solution, and the mixture was magnetically stirred for half an hour. Take 1g NH 4 HF 2 Dissolve in 10ml of deionized water, then add dropwise to the mixture, and magnetically stir the mixture for half an hour. The mixed solution after the reaction was centrifuged to obtain a white precipitate, which was washed three times under the condition of ultrasonic separation, and then dried in air at 50° C. for 5 hours. Calcined at 600°C for 6 hours, then naturally cooled to room temperature.

Embodiment 2

[0040] The molecular formula of the synthetic fluoride with synergistic frequency conversion performance is Yb 0.87 Er 0.13 f 3 . Dissolving rare earth element oxide Yb with hydrochloric acid 2 o 3 and Er 2 o 3 , configure 0.2mol / L of YbCl 3 and ErCl 3 solution, take 26ml of YbCl 3 and 3.32ml of ErCl 3 solution, and the mixture was magnetically stirred for half an hour. Take 2g NH 4 HF 2 Dissolve in 10ml of deionized water, then add dropwise to the mixture, and magnetically stir the mixture for half an hour. The mixed solution after the reaction was centrifuged to obtain a white precipitate, which was washed three times under the condition of ultrasonic separation, and then dried in air at 70° C. for 5 hours. Calcined at 750°C for 2 hours, then naturally cooled to room temperature. For the luminescence spectrum of the prepared sample under the common excitation of 373nm and 980nm, see figure 2 . For the luminescence spectrum of the prepared sample under the co...

Embodiment 3

[0042] The molecular formula of the synthetic fluoride with synergistic frequency conversion performance is Yb 0.50 Er 0.50 f 3 . Dissolving rare earth element oxide Yb with hydrochloric acid2 o 3 and Er 2 o 3 , configure 0.2mol / L of YbCl 3 and ErCl 3 solution, take 15ml of YbCl 3 and 15ml of ErCl 3 solution, and the mixture was magnetically stirred for half an hour. Take 2g NH 4 F was dissolved in 10 ml of deionized water, then added dropwise to the mixture, and the mixture was magnetically stirred for half an hour. The mixed solution after the reaction was centrifuged to obtain a white precipitate, which was washed three times under the condition of ultrasonic separation, and then dried in air at 50° C. for 5 hours. Calcined at 800°C for 2 hours, then naturally cooled to room temperature.

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Abstract

The invention discloses a material having cooperative frequency light conversion performance, and a preparation method and application thereof. The material having cooperative frequency light conversion performance has the molecular formula: YxYby(sigma Ln)zF3, wherein x is not less than 0 but less than 1, y is more than 0 but less than 1, z is more than 0 but not more than 0.50, Ln is any one or more than one of the rare earth elements including Ce, Tm, Er, Ho, Dy, Tb, Gd, Eu, Sm, Nd and Pr. The preparation method of the material having cooperative frequency light conversion performance is any one of the group consisting of conventional high-temperature solid phase method, hydrothermal synthesis method and co-precipitation method. The fluoride material having cooperative frequency light conversion performance according to the invention realizes the combination of two mechanisms, i.e. upper conversion and quantum cutting lower conversion, effectively converts ultraviolet and infrared lights into a visible light at certain frequency simultaneously while the reinforcement twice as much as the intensity of the visible light at the frequency is obtained, and has the advantages of low cost, simple and convenient synthesis method and batch production.

Description

technical field [0001] The invention relates to the field of luminescence of rare earth materials and the technical field of synthesis of rare earth materials, in particular to a synergistic frequency conversion material and its preparation method and application. Background technique [0002] As a renewable energy source, solar energy is cheap and inexhaustible, and it is an important energy source for low-carbon development that can be freely utilized by human beings. The wavelength corresponding to the maximum energy of solar radiation is 475nm, and nearly 99% of the solar energy is distributed in the broad band of 220-4000nm. However, due to the limitation of the determined energy gap width of semiconductors, all kinds of solar cells can only achieve relatively high-efficiency photoelectric conversion for light in their specific spectral ranges. For example, the wavelength corresponding to the highest photoelectric conversion efficiency of monocrystalline silicon solar ...

Claims

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Application Information

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IPC IPC(8): C09K11/85H01L31/04H01L31/032H01L31/046
CPCY02E10/50
Inventor 颜晓红王祥夫陈远
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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