A kind of rare earth ion pair co-doped k 3 y(po 4 ) 2 Up-conversion luminescent material and preparation method thereof

Abstract

The invention discloses a rare earth ion pair co-doped K3Y(PO4)2 up-conversion light-emitting material and a preparation method thereof. According to the present invention, KYP:Yb<3+>-Tm<3+> and KYP:Yb<3+>-Ho<3+> are synthesized through a solid phase method by using K3Y(PO4)2 as a matrix material doping Yb<3+> and Tm<3+> / Ho<3+> ion pair; the preparation method has advantages of simple operation, extremely low requirement on equipment and low production cost; and the synthesized up-conversion light-emitting material has advantages of stable performance and high sensitivity in temperature detection, and has wide application prospects in the fields of optoelectronics, laser technology and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of rare-earth doped luminescent materials, and in particular relates to a Yb 3+ , Tm 3+ / Ho 3+ Co-doping K 3 Y(PO 4 ) 2 Upconversion luminescent material and preparation method thereof. [0002] technical background [0003] In science, industry, military and many other fields, temperature is one of the most important parameters, and its accurate measurement and calibration is the key research work in this technical field. Traditional temperature detection sensors are based on the principle of thermal expansion and contraction of liquids or metals, but they generally must be in contact with the body of the material to be measured, and cannot achieve submicron or even nanoscale temperature measurement, temperature detection of cells in living organisms, and corrosive environments. Temperature measurement; in order to solve this technical problem, those skilled in the art have proposed a no...

AI Technical Summary

Problems solved by technology

Traditional temperature detection sensors are based on the principle of thermal expansion and contraction of liquids or metals, but they generally have to contact the body of the material to be measured, and cannot achieve submicron or nanoscale temperature measurement, temperature detection of cells in living organisms, and detection of corrosive environments. temperature measurement; in order to solve this technical problem, those skilled in the art have proposed a non-contact temperature detection method. The relationship between temperature changes, in order to complete the detection of ambient temperature

[0004] Up-conversion luminescent material is a luminescent material that can convert near-infrared light into visible light, usually including activator, sensitizer and matrix, Er 3+ 、Tm 3+ Plasma has abundant energy levels, and some energy levels have a long lifetime. It is the activator of up-conversion materials that have been studied more at present. Er 3+ 、Tm 3+ Up-conversion materials with ions as activators usually use ytterbium ions Yb 3+ As a sensitizer, for the matrix in the up-conversion material, the phosphor with high-efficiency luminescence generally uses fluoride with low phonon energy as the matrix, such as NaYF 4 , is currently the host material with the highest up-conversion luminous efficiency, doped with Yb 3+ -Er 3+ Synthesize up-conversion luminescent materials after various ion pairs, such as NaYF 4 :Er 3+ -Yb 3+ ; but the physical and chemical properties of fluoride itself are very unstable, and it is very sensitive to the surface contact with oxygen, which is easily polluted and deteriorated to affect the subsequent luminescent performance; in addition, the fluorine source used in the preparation process of fluoride materials has a strong Corrosivity and volatility, easy to cause environmental pollution, and the synthesis temperature is high

[0005] Compared with fluoride, the oxide matrix material has high physical and chemical stability, the production process is simple, easy to synthesize, and no pollutants are generated during the preparation process, such as SrWO 4 、BaMoO 4 etc., but the currently developed luminescent materials, such as BaMoO 4 :Er 3+ -Yb 3+ 、SrWO 4 :Er 3+ -Yb 3+ etc., the temperature detection sensitivity is compared to NaYF 4 :Er 3+ -Yb 3+ Lower, and the material emits less color

Images