Photoluminescent crystal material praseodymium potassium borate, and preparation method and application thereof

Abstract

The invention discloses a photoluminescent crystal material praseodymium potassium borate, and a preparation method and an application thereof, and belongs to the technical field of rare earth luminescent materials. A technical scheme comprises the key point that the photoluminescent crystal material praseodymium potassium borate has the chemical formula of K3Pr3(BO3)4, belongs to a triclinic crystal system, and has the space group of P-1; the unit cell parameters comprise a=9.0814 angstroms, b=10.8052 angstroms, c=14.0885 angstroms, alpha=69.800 DEG, beta=89.922 DEG, gamma=89.892 DEG, Z=4, and V=1297.4 angstrom<3>. The method comprises the steps: synthesizing praseodymium potassium metaborate monocrystals by a high temperature solution method; placing a fully and evenly ground mixed raw material in a platinum crucible, placing the crucible in a box-type oven, and carrying out heating synthesis; and keeping a constant temperature at the maximum temperature, and then slowly cooling down to room temperature to obtain monocrystals of the compound. The crystal material can be excited by 445 nm light to emit red fluorescence, can be used in fluorescent luminescent materials and devices, and meets the demand of electronic industry, public place display, home appliance display and the like.

Description

technical field [0001] The invention belongs to the technical field of rare earth luminescent materials, and in particular relates to a photoluminescence crystal material potassium praseodymium borate and a preparation method and application thereof. Background technique [0002] In the field of luminescent materials, rare earth elements play an irreplaceable and important role. Due to the unique electron layer structure of rare earth ions, rare earth luminescent materials have many excellent properties that other luminescent materials do not have. It can be said that the research and development of rare earth luminescent materials is like a revolution compared with traditional luminescent materials. In the field of long afterglow luminescent materials, the luminous brightness of rare earth long afterglow luminescent materials is dozens of times that of traditional luminescent materials, and the afterglow time is as high as several thousand minutes. Rare earth ions have an ...

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Problems solved by technology

Potassium praseodymium borate crystal compound may become a new material with excellent luminescent properties, but there has been no report on this compound so far

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