White-emitting inorganic thin-film electroluminescent devices using oxide phosphors

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560426
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Kanazawa Institute of Technology
• Principal Investigator: FUKADA Haruki 金沢工業大学, 工学部, 准教授 (90509176)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 無機EL / 照明 / 酸化物 / 薄膜 / コンビナトリアル / ディップコート / 均一沈殿法 / 発光

Outline of Final Research Achievements

To develop white-emitting inorganic thin-film electroluminescent (TFEL) devices using oxide phosphors, the photoluminescent (PL) and EL characteristics in new blue-emitting Bi- or Eu-activated multicomponent oxide thin-film phosphors, and the PL characteristics in the thin films and nanoparticles of yellow-emitting Y3Al5O12:Ce phosphors were investigated. Intense emissions in the ultraviolet-blue region were obtained in PL from some Bi- or Eu-activated oxide phosphors, such as Y3Ga5O12:Bi, Y4Ga2O9:Bi and (SrO)-(Al2O3):Eu, prepared using a combinatorial dip coating method followed by postannealing. In addition, intense yellow PL emission was observed from the Y3Al5O12:Ce phosphor thin films and nanoparticle phosphors prepared under optimized methods and conditions.

Free Research Field

光物性，蛍光体，発光デバイス，結晶成長