Method for regulating upconversion emitting color of rare earth illuminant
A technology of rare earth luminescence and luminescence color, which is applied in the direction of luminescence materials, chemical instruments and methods, etc. It can solve the problems of difficulty in adjusting its color and uncontrollable luminescence process, and achieve the effect of enhancing luminescence intensity
Inactive Publication Date: 2015-05-20
KUNMING UNIV OF SCI & TECH
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Problems solved by technology
The main "bottleneck" problem encountered in the practical application of up-conversion luminescent materials in the field of 3D display is that the uncontrollable luminescence process makes it difficult to adjust its color
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Embodiment 1
[0020] Embodiment 1: Erbium-doped ytterbium phosphate (Yb 0.8 Er 0.2 PO 4 ) Upconversion luminescent color tunable opal photonic crystals of inverse opal photonic crystals:
[0021] Opal photonic crystals were prepared by self-assembly method.
[0022] The sols of material systems such as phosphates, oxides, silicates, aluminates, and borates doped with rare earth ions were prepared by the sol-gel method.
[0023] The above-mentioned sol is filled into the opal template prepared by the self-assembly method, and the rare earth ion-doped luminophore-based inverse opal photonic crystal is obtained after high-temperature calcination.
[0024] First: Add 800ul of monodisperse polystyrene microspheres with a diameter of 350nm or mixed polystyrene microspheres of 350nm (600ul) and 220nm (200ul) into a weighing bottle filled with 7ml of water, and then ultrasonically disperse for 3 minutes; Second: put a 4cm long, 1cm wide, 10mm thick quartz substrate into the weighing bottle at a...
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Abstract
The invention discloses a method for regulating upconversion emitting color of a rare earth illuminant, in particular to a method that the photonic bandgap of the inverse opal photonic crystal is changed to regulate the upconversion emitting color of the rare earth illuminant, belonging to the technical fields of photonic crystal and upconversion luminescence. The method disclosed by the invention is characterized in that the size of microspheres in an opal template is changed to regulate the periodic structure dimension of the inverse opal photonic crystal, thus the upconversion emission peak of the rare earth illuminant is overlapped with the band edge of the photonic bandgap, the luminescent intensity of the upconversion emission peak can be increased and the upconversion emitting color of the rare earth illuminant can be regulated. The invention has important application value in the fields such as the upconversion emitting display.
Description
technical field [0001] The invention discloses a method for regulating the up-conversion luminous color of a rare earth luminous body, specifically the up-conversion luminous color of the rare-earth luminous body regulated by the photon band gap of an inverse opal photonic crystal, and belongs to the technical field of photonic crystals and up-conversion luminescence. Background technique [0002] Up-conversion luminescence refers to the generation of short-wavelength light emission under the excitation of long-wavelength light during the excitation process of photoluminescence. Up-conversion luminescence has broad application prospects in laser technology, optical fiber communication technology, optical fiber amplifier, three-dimensional display, infrared detection technology and anti-counterfeiting. The main "bottleneck" problem encountered in the practical application of up-conversion luminescent materials in the field of 3D display is that the uncontrollable luminescence...
Claims
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IPC IPC(8): C09K11/08C09K11/81
Inventor 杨正文邱建备宋志国余雪周大成尹兆益
Owner KUNMING UNIV OF SCI & TECH