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Development of environmentally friendly inorganic fluorescent pigments, A3V5O14 (A = K and Rb) and Cs2V4O11:Crystal structure, optical and color properties

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2020, 30(2), pp.47~54
  • DOI : 10.6111/JKCGCT.2020.30.2.047
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : April 6, 2020
  • Accepted : April 18, 2020
  • Published : April 30, 2020

Gyu Jin Jeong 1,  Jinho Kim 2,  Lee, Younki ORD ID 3,  Jonghee Hwang 2,  Kenji Toda 4,  BAE BYUNGSEO ORD ID 5,  Sun Woog Kim ORD ID 2

1한국세라믹기술원 전자융합본부 광전자부품소재센터
2한국세라믹기술원
3경상대학교
4Niigata University
5재단법인 영월산업진흥원

Accredited

ABSTRACT

To develop the bright-vivid red- and yellow-inorganic fluorescent pigments with high luminescence properties,A3V5O14 (A = K and Rb) and Cs2V4O11 inorganic pigments were synthesized by a water assisted solid state reaction (WASSR)method and a conventional solid state reaction method. Although impurity peaks corresponding to the AVO3 and AV3O8(A = K, Rb, and Cs) were observed in all samples prepared, the trigonal structure A3V5O14 (A = K and Rb) and orthorhombic structure Cs2V4O11 were successfully obtained as a main phase. These inorganic pigments showed the broad absorption band(under 550 nm) originated from CT transitions of VO4 polyhedron, and the strong broad red- and green-emission bands dueto ³T₂→¹A₁ and ³T₁→¹A₁ transitions of the [VO4]3- group. The A3V5O14 (A = K and Rb) and Cs2V4O11 pigments showeda bright-vivid red- and yellow-body color, where the a* values of the A3V5O14 (A = K and Rb) were +35.5 and +45.9,respectively, and b* value of Cs2V4O11 pigments was +50.3. The L* values of the A3V5O14 (A = K and Rb) and Cs2V4O11 inorganic pigments were over +45. These results indicate that the A3V5O14 (A = K and Rb) and Cs2V4O11 inorganic pigmentscould be an attractive candidate as a bright-vivid red- and yellow inorganic pigments.

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