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Photoelectric functional crystal M3RE(PO4)3 and preparation method thereof

A photoelectric function and crystal technology, applied in the field of photoelectric function crystal M3RE3 and its preparation, to achieve the effect of wide absorption edge and high optical transmittance

Active Publication Date: 2019-07-30
SHANDONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Although part M 3 RE(PO 4 ) 3 Types of compound powders were successfully prepared, but about M 3 RE(PO 4 ) 3 The single crystal of configuration and growth technique are still rarely reported, propose the present invention for this reason

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  • Photoelectric functional crystal M3RE(PO4)3 and preparation method thereof
  • Photoelectric functional crystal M3RE(PO4)3 and preparation method thereof
  • Photoelectric functional crystal M3RE(PO4)3 and preparation method thereof

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Embodiment Construction

[0008] Technical scheme of the present invention is as follows:

[0009] The general formula is M 3 RE(PO 4 ) 3 The photoelectric functional crystal of the present invention has a noncentrosymmetric structure and belongs to the -43m point group of the cubic crystal system, wherein M=Ba, Ca or Sr, RE=Y, La or Gd.

[0010] Preferably, the M 3 RE(PO 4 ) 3 Photoelectric functional crystals are selected from one of the following:

[0011] Ba 3 Y(PO 4 ) 3 Crystal, Ba 3 La(PO 4 ) 3 Crystal, Ca 3 Gd(PO 4 ) 3 Crystal, Sr 3 Y(PO 4 ) 3 Crystal, Sr 3 La(PO 4 ) 3 Crystal, Sr 3 Gd(PO 4 ) 3 Crystal; the corresponding chemical names are: yttrium barium phosphate crystal, lanthanum barium phosphate crystal, gadolinium calcium phosphate crystal, yttrium strontium phosphate crystal, lanthanum strontium phosphate crystal, gadolinium strontium phosphate crystal.

[0012] Further, the above crystal structure parameters are as follows:

[0013] Ba 3 Y(PO 4 ) 3 Crystal: cu...

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Abstract

The invention relates to a photoelectric functional crystal M3RE(PO4)3 and a preparation method thereof. The M3RE (PO4) 3 crystal is of a non-centrosymmetric structure, and belongs to a cubic system-43m point group, wherein M=Ba or Ca or Sr, RE=Y or La or Gd. The M3RE(PO4)3 crystal growth method comprises the steps of (1) polycrystal material synthesis, wherein stoichiometric MCO3, RE2O3 and a phosphorus compound are adopted, the phosphorus compound is excessive, and raw materials are sintered twice to obtain a M3RE(PO4)3 polycrystal material; (2) polycrystal material melting; (3) Czochralskicrystal growth. The prepared M3RE(PO4)3 crystal material is a high quality single crystal, not only are high optical transmittance and wide absorption edge achieved, but also no phase change exists from the room temperature to a melting point, deliquescence does not exist, and the piezoelectric activity and non-linear frequency conversion characteristics are achieved.

Description

technical field [0001] The invention relates to a photoelectric functional crystal M 3 RE(PO 4 ) 3 The invention and a preparation method thereof belong to the technical field of photoelectric functional crystals. Background technique [0002] Optoelectronic functional crystal materials, as key materials in high-tech fields such as microelectronics, optoelectronics, communications, aerospace and modern military technology, are valued by countries all over the world. The development of laser and optoelectronics has further promoted the development and application of functional crystals. The research and application of optoelectronic functional crystals in my country are at the forefront of the world, especially the research on inorganic nonlinear optical crystals is in the leading position in the world. Nevertheless, the current international competition in the field of optoelectronic functional crystals is increasingly fierce, and researchers in the field of crystal mate...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B15/20
CPCC30B29/14C30B15/20
Inventor 于法鹏武广达樊梦迪李芳林程秀凤赵显
Owner SHANDONG UNIV
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