(1. 沈陽化工學(xué)院 材料科學(xué)與工程學(xué)院，沈陽 110142；
2. 沈陽大學(xué) 材料科學(xué)與工程系，沈陽 110044；
3. 中國科學(xué)院 金屬研究所 沈陽材料科學(xué)國家(聯(lián)合)實(shí)驗(yàn)室，沈陽 110016)
摘 要: 采用反相微乳液法制備(Y,Gd)2O3׃Eu3+納米粉體。通過XRD、TG/DSC、SEM、TEM、PL等手段分別對(duì)樣品的晶化過程、晶粒尺寸、粉體形貌以及發(fā)光性能進(jìn)行分析。結(jié)果表明：晶粒尺寸隨著晶化溫度提高而增加，樣品在
關(guān)鍵字: 反相微乳液；(Y,Gd)2O3׃Eu3+納米粒子；發(fā)光性能；濃度猝滅
（1. School of Materials Science and Engineering, Shenyang Institute of Chemical Technology, Shenyang 110142, China;
2. Department of Materials Science and Engineering, Shenyang University, Shenyang 110044, China;
3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China）
Abstract:(Y,Gd)2O3׃Eu3+ nanoparticles were prepared by reverse microemulsion method. The crystallization process, grain size, morphology and photoluminescence properties of the sample were characterized by XRD, TG/DSC, SEM, TEM and PL. The results show that the grain size increases with increasing crystallization temperature and the complete crystallization temperature of the precursor is 800 ℃. The particles are near-spherical with the primary size of 20 nm when the initiate concentration is 0.37 mol/L. The excitation spectra of (Y,Gd)2O3׃Eu3+ is observed by monitoring at 612 nm, and there is a wide band which is due to the charge transfer band (CTB) of Eu3+-O2−. The characteristic peak of (Y,Gd)2O3׃Eu3+ locates at 612 nm which is caused by 5D0-7F2 transition of Eu3+ excited by 237 nm. When the atomic content of Eu is above 10%, the concentration quenching occurs and it leads to the intensity decreasing of the characteristic peak.
Key words: reverse microemulsion; (Y,Gd)2O3׃Eu3+ nanoparticles; photoluminescence properties; concentration quenching
