CAJ | 학술논문

以甘氨酸为燃料,采用溶液燃烧法制备了Y2O3:Eu3+ (3%)纳米粉末,并研究了制备过程中前驱溶液的pH值对Y2O3:Eu3+发光性质的影响.从XRD和SEM分析得到,随着溶液pH值的增大,样品颗粒逐渐变大,并且多孔粉末变得越来越致密.通过对样品发光性质的测量得到,随着pH值的增大,样品发光逐渐增强,但寿命逐渐变短.激发谱显示,基质吸收和电荷迁移带的相对强度比随着pH值的增大逐渐减小.
이감안산위연료,채용용액연소법제비료Y2O3:Eu3+ (3%)납미분말,병연구료제비과정중전구용액적pH치대Y2O3:Eu3+발광성질적영향.종XRD화SEM분석득도,수착용액pH치적증대,양품과립축점변대,병차다공분말변득월래월치밀.통과대양품발광성질적측량득도,수착pH치적증대,양품발광축점증강,단수명축점변단.격발보현시,기질흡수화전하천이대적상대강도비수착pH치적증대축점감소.
Y2O3:Eu3+(3%)nano powders were prepared by auto-combustion method and the effect of pH value of the precursor solution was investigated. The XRD and SEM analyses indicate that ssmples prepared under high pHvalue have less porous morphology and larger particle size, at the same time, they present stronger luminescence intensity revealed by emission. The excitatin spectra show that the decay curves show shorter lifetime with the increase of crystalline size.