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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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