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Photoluminescence behaviors from stoichiometric gadolinium oxide films

By Zhou JP, Chai CL, Yang SY, Liu ZK, Song SL, Chen NF, Lin LY and Peoples R China. Beijing 100083 Key Lab Semicond Mat Sci Inst Semicond Chinese Acad Sci Zhou JP

Abstract

Stoichiometric gadolinium oxide thin films have been grown on silicon (100) substrates with a low-energy dual ion-beam epitaxial technique. Gadolinium oxide shares Gd2O3 structures although the ratio of gadolinium and oxygen in the film is about 2:1 and a lot of oxygen deficiencies exist. Photoluminescence (PL) measurements have been carried out within a temperature range of 5-300 K. The detailed characters of the PL emission integrated intensity, peak position, and peak width at different temperature were reported and an anomalous photoluminescence behavior was observed. The character of PL emission integrated intensity is similar to that of some other materials such as porous silicon and silicon nanocrystals in silicon dioxide. Four peaks relative to alpha band and beta band were observed also. Therefore we suggest that the nanoclusters with the oxygen deficiencies contribute to the PL emission and the model of singlet-triplet exchange splitting of exciton was employed for discussion. (C) 2003 American Institute of Physics

Topics: Interfacial Layer Formation, Gate Dielectrics Gd2o3, Ion-beam, Temperature-dependence, Silicon, Si, Gaas(100), Constants, Europium, Yttrium, 半导体物理, ion beam, temperature dependence, silicon, metric system, silicon, avogadro constant, europium, bore, 离子束, silicium, si, silizium, sudden impulse, systeme international, state interaction method, stieltje imaging, spherical interaction approximation, international metric system, international system of units, si (weights and measures), si-metric, metric unit, si, silicium, silizium, sudden impulse, systeme international, state interaction method, stieltje imaging, spherical interaction approximation, 引力常量, avogadro's number, constant, avogadro, loschmidt's number, constants, fundamental constants, gravitational constant, boltzmann constant, 阿伏伽德罗常量, 玻耳兹曼常量, g, eu, europium (deutsch), europium (francais), 无机发光材料, [+], bor, boron, carbon, carbone, kalium, kohlenstoff, phosphor, phosphore, phosphorus, potassium, potassium (francais), schwefel, soufre, sulfur, sulphur, tungsten, tungstene, uran, uranium, uranium (francais), vanadium, vanadium (deutsch), vanadium (francais), wolfram, wolfram (deutsch), yttrium, yttrium (deutsch), yttrium (francais), y
Year: 2003
OAI identifier: oai:ir.semi.ac.cn:172111/11448
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