논문 상세보기

주형법으로 제조된 Gd2O3:Eu3+ 적색 형광체의 나노입자 분산 및 형상제어 KCI 등재 SCOPUS

Dispersion and Shape Control on Nanoparticles of Gd2O3:Eu3+ Red Phosphor Prepared by Template Method

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/334047
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

Gd2O3:Eu3+ red phosphors were prepared by template method from crystalline cellulose impregnated by metal salt. The crystallite size and photoluminescence(PL) property of Gd2O3:Eu3+ red phosphors were controlled by varying the calcination temperature and Eu3+ mol ratio. The nano dispersion of Gd2O3:Eu3+ was also conducted with a bead mill wet process. Dependent on the time of bead milling, Gd2O3:Eu3+ nanosol of around 100 nm (median particle size : D50) was produced. As the bead milling process proceeded, the luminescent efficiency decreased due to the low crystallinity of the Gd2O3:Eu3+ nanoparticles. In spite of the low PL property of Gd2O3:Eu3+ nanosol, it was observed that the photoluminescent property was recovered after re-calcination. In addition, in the dispersed nanosol treated at 85 oC, a self assembly phenomenon between particles appeared, and the particles changed from spherical to rod-shaped. These results indicate that particle growth occurs due to mutual assembly of Gd(OH)3 particles, which is the hydration of Gd2O3 particles, in aqueous solvent at 85 oC.

저자
  • 박정민(한국세라믹기술원 에코복합소재센터)
  • 반세민(한국세라믹기술원 에코복합소재센터)
  • 정경열(공주대학교)
  • 최병기(㈜씨큐브)
  • 강광중(㈜씨큐브)
  • 김대성(한국세라믹기술원 에코복합소재센터) Corresponding author