The Luminescent Properties of SrTiO<TEX>$_3$</TEX> :Al, Pr Red Phosphor

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J. Korean Ceram. Soc. > Volume 36(5); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(5): 478.

Al과 Pr이 첨가된 SrTiO$_3$ 적색 형광체의 발광 특성

박정규, 류호진¹, 박희동¹, 최승철

아주대학교 재료공학과
¹한국화학연구소 화학소재연구단

The Luminescent Properties of SrTiO$_3$ :Al, Pr Red Phosphor

ABSTRACT

SrTiO3 :Al, Pr phosphor as an oxide compound phosphor is expect to be applied for a field emission display(FED). In this phosphor the excitation spectrum shows a different tendency according to an addition Al3+ and Pr3+ In this excitation spectrum the main peak at 359 nm represent excitation level of Pr3+(1S0longrightarrow1D2 transition) and the absorption characteristic according to Ti/Sr molar ratio is influenced by the structure symmetry. The emission spectrum exhibits the red luminescence with the radiative decay of the 1D2 states(1D2 longrightarrow3H4 transition) The concentration quenching phenomena at 1D2 state shows up as Al3+ and Pr3+ ion concentration increases.

Key words: SrTiO$_3$, Al$^{3+}$, Pr$^{3+}$, Photoluminescence