Potassium-sodium niobate based oxide up-conversion luminescent material and preparation method thereof

A potassium-sodium niobate-based, luminescent material technology, applied in the direction of luminescent materials, chemical instruments and methods, to achieve the effect of broadening the application field

Inactive Publication Date: 2013-08-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And so far, Na 0.5 K 0.5 NbO 3 The research on upconversion luminescence as a host has not been reported yet, Na without doping rare earth elements 0.5 K 0.5 NbO 3 As a good lead-free piezoelectric material, it can also be used in ultrasonic transducers, ultrasonic delayers, sensors, non-destructive testing, piezoelectric transformers, communication technology, etc.

Method used

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  • Potassium-sodium niobate based oxide up-conversion luminescent material and preparation method thereof
  • Potassium-sodium niobate based oxide up-conversion luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation (Na 0.5 K 0.5 ) 1-x Er x NbO 3 Up-conversion luminescent material, where x=0.001, 0.003, 0.005, 0.007, 0.01, 0.03, 0.05.

[0029] Select raw material Na 2 CO 3 、K 2 CO 3 、Er 2 o 3 and Nb 2 o 5 , according to the formula (Na 0.5 K 0.5 ) 1-x Er x NbO 3 The stoichiometric ratios of the corresponding elements in the formula were weighed respectively, and the weighed raw materials were put into a ball mill jar, added with absolute ethanol and zirconia balls, milled on the ball mill for 24 hours, and dried with absolute ethanol to obtain a ball mill. . Pre-fire the ball abrasive in an alumina crucible, the pre-fire temperature is 880°C, the heating rate is 3°C / min, keep warm for 6 hours and cool naturally to get the pre-fired powder, grind the pre-fired powder and add anhydrous Ethanol and zirconia balls are ball-milled for 24 hours and dried, then sintered in the temperature range of 1100-1200°C, with a heating rate of 3°C / min, kept for 4 hours,...

Embodiment 2

[0035] Preparation (Na 0.5 K 0.5 ) 0.995-z Er 0.005 Yb z NbO 3 , where z=0.1, 0.2, 0.35.

[0036] Raw material selection Na 2 CO 3 、K 2 CO 3 、Er 2 o 3 , Yb 2 o 3 and Nb 2 o 5 , according to the formula (Na 0.5 K 0.5 ) 0.995 Er 0.005 Yb z NbO 3 Carry out element proportioning and weigh the selected raw materials, put the raw materials into a ball mill tank, add absolute ethanol and zirconia balls, mill on the ball mill for 24 hours, discharge and dry with absolute ethanol to obtain a ball mill. Pre-fire the ball abrasive in an alumina crucible, the pre-fire temperature is 880°C, the heating rate is 3°C / min, keep warm for 6 hours and cool naturally to get the pre-fired powder, grind the pre-fired powder and add anhydrous Ethanol and zirconia balls are ball-milled for 24 hours and dried, then sintered in the temperature range of 1100-1200°C, with a heating rate of 3°C / min, kept for 4 hours, cooled naturally and ground to obtain a powder, which is The up-conv...

Embodiment 3

[0039] Preparation (Na 0.5+δ K 0.5-y A y ) 1-x-z m x Yb z NbO 3 : φC, where φ=0.1, z=0.25, x=0.15, y=0.2; δ=0.1, M is Ho 3+ , A is Li, and C is Li.

[0040] Raw material selection Na 2 CO 3 、K 2 CO 3 、Ho 2 o 3 , Yb 2 o 3 , Nb 2 o 5 and Li 2 CO 3 , according to the formula (Na 0.6 K 0.3 Li 0.2 ) 0.6 Ho 0.15 Yb 0.25 NbO 3 : 0.1 Li to carry out the element ratio and weigh the selected raw materials, put into the ball mill tank after weighing the raw materials, add absolute ethanol and zirconia balls, ball mill on the ball mill for 24 hours, discharge and dry with absolute ethanol to obtain the ball mill. Pre-fire the ball abrasive in an alumina crucible, the pre-fire temperature is 880°C, the heating rate is 3°C / min, keep warm for 6 hours and cool naturally to get the pre-fired powder, grind the pre-fired powder and add anhydrous Ethanol and zirconia balls are ball-milled for 24 hours and dried, then sintered in the temperature range of 1100-1200°C, with...

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PUM

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Abstract

The invention discloses a potassium-sodium niobate based oxide up-conversion luminescent material with a chemical formula of (Na0.5+sigmaK0.5-yAy)1-x-zMxYbzNbO3:Phi C or (Na0.5-yAyK0.5+sigma)1-x-zMxYbzNbO3: Ph iC, wherein M is selected from one or more of Li, Na, K, Tl and Ag; C is selected from one or more of Li, Na, K, Tl and Ag; A is one or more of K, Na and Li; a value range of x is not smaller than 0.00001 and not bigger than 0.15, the value range of y is not smaller than 0 and not bigger than 0.5, the value range of z is not smaller than 0 and not bigger than 0.35, the value range of sigma is not smaller than 0 and not bigger than 0.1 and the value range of Phi is not smaller than 0 and not bigger than 0.1. The luminescent material disclosed by the invention further has up-conversion luminescent characteristic in addition to piezoelectric performances, ferroelectric performances and dielectric performances, belongs to photoelectric multifunctional materials, and not only can be applied to the piezoelectric field, but also can be applied to the sensor field, the information storage field, the biological detection field and the biomedical field.

Description

technical field [0001] The invention relates to an oxide up-conversion luminescent material with a novel perovskite structure excited by infrared light and a preparation method thereof, belonging to the field of photoelectric functional materials. Background technique [0002] Up-conversion luminescent material is a luminescent material that can emit visible light under the excitation of infrared laser, that is, a material that can convert long-wavelength infrared light into short-wavelength visible light. This luminescent phenomenon violates Stokes' law, so it is also called Anti-Stokes law luminescent material. Up-conversion luminescent materials have broad application prospects in the fields of laser anti-counterfeiting, infrared detection, three-dimensional display, information processing, short-wavelength all-solid-state lasers, optical temperature sensors, solar cells, biomarkers, and medical diagnosis. [0003] Upconversion luminescence has been observed in organic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 王旭升孙海勤彭登峰张奇伟李艳霞
Owner TONGJI UNIV
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