PLD 방법으로 Si(100) 기판위에 증착한 Y2-xGdxO3:Eu3+/ 박막의 형광특성

Abstract

<TEX>$Y_2$</TEX><TEX>$_{-x}$</TEX>G <TEX>$d_{x}$</TEX> <TEX>$O_3$</TEX>:E <TEX>$u^{3+}$</TEX>(x=0.0, 0.3, 0.6, 1.0, 1.4) luminescent thin films have been grown on Si (100) substrates using pulsed laser deposition. The films grown under different deposition conditions have been characterized using microstructural and luminescent measurements. The crystallinity, the surface morphology and photoluminescence (PL) of the films are highly dependent on the amount of Gd. The photoluminescence (PL) brightness data obtained from <TEX>$Y_2$</TEX><TEX>$_{-x}$</TEX>G <TEX>$d_{x}$</TEX> <TEX>$O_3$</TEX>:E <TEX>$u^{3+}$</TEX> films grown under optimized conditions have indicated that Si (100) is one of promised substrates for the growth of high quality <TEX>$Y_2$</TEX><TEX>$_{-x}$</TEX>G <TEX>$d_{x}$</TEX> <TEX>$O_3$</TEX>:E <TEX>$u^{3+}$</TEX> thin film red phosphor. In particular, the incorporation of Gd into <TEX>$Y_2$</TEX> <TEX>$O_3$</TEX> lattice could induce a remarkable increase of PL. The highest emission intensity was observed with <TEX>$Y_{1.35}$</TEX>G <TEX>$d_{0.60}$</TEX> <TEX>$O_3$</TEX>: <TEX>$E^{3+}$</TEX>, whose brightness was increased by a factor of 1.95 in comparison with that of <TEX>$Y_2$</TEX> <TEX>$O_3$</TEX>:E <TEX>$u^{3+}$</TEX> films.3+/ films.films.lms.