Synthesis of Luminescent Ink from Europium-Doped Y2O3 Dispersed in Polyvinyl Alcohol Solution. (3rd May 2009)

• Record Type: Journal Article
• Authors: Astuti, ; Abdullah, Mikrajuddin; Khairurrijal,
• Other Names: Chen W.-C. Academic Editor.
• Is Part Of: Advances in optoelectronics. Volume 2009(2009)
• Publication Date: 2009-05-03
• Subjects: Optoelectronics -- Periodicals; Optoélectronique; Optoelectronics; Periodicals; 621.381045
• DOI: 10.1155/2009/918351
• Languages: English
• ISSNs: 1687-563X

Abstract

Abstract : Luminescent ink from europium-dopedY 2 O 3 (Y 2 O 3 :Eu) has been synthesized by two steps method: first, synthesis of luminescent powder ofY 2 O 3 :Eu by simple heating of metallic nitrates in a polymer solution and second, dispersing the powder in a polyvinyl alcohol (PVA) solution. The stability of the ink (luminescent colloid) was strongly affected by mixing process of the powder and the solution. Mixing process must be performed for a long time (about 8 hours) at above room temperature to product stable colloids. We observed that mixing at 30–40 ∘ C resulted in a stable and highly dispersed colloid. The writing test was performed on a white paper to show the potential use of the colloid for making security codes.