Combinatorial screening of Eu3+ doped TiO2-Y2O3-Gd2O3 ternary system at soft UV excitation

Duk Hyun Park, Sang Ho Cho, Ji Sik Kim, Kee Sun Sohn

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The main objective of the present investigation was to develop new oxide red phosphors, which should be efficient in terms of the luminescence under soft ultra-violet excitation. In this regard, a solution combinatorial chemistry (combi-chem) technique was employed to screen the Eu3+ doped TiO2-Y2O3-Gd2O3 ternary system. Several luminance libraries were obtained at various temperatures and ensuing systematic phase identifications were achieved in this ternary system. Y2O3 and Gd2O3 played an important role in enhancing the Eu3+ emission and that TiO2 promoted the Eu3+ excitation at the 400 nm excitation. Even though our best sample showed 4.5 times as high luminance as the commercially available Y2O3:Eu3+ phosphor, the luminance level still needs an improvement.

Original languageEnglish
Pages (from-to)196-201
Number of pages6
JournalJournal of Alloys and Compounds
Volume449
Issue number1-2
DOIs
StatePublished - 31 Jan 2008

Keywords

  • Luminescence
  • Optical properties
  • Phosphors
  • Sol-gel processes

Fingerprint

Dive into the research topics of 'Combinatorial screening of Eu3+ doped TiO2-Y2O3-Gd2O3 ternary system at soft UV excitation'. Together they form a unique fingerprint.

Cite this