Effect of pH value on photoluminescence properties of Eu^3+/Tb^3+co-doped ZnO  

作　　者：BIAN Ming-jing ZHANG Hong-yan 卞明晶;张红燕(School of Physical Science and Technology,Xinjiang University,Urumqi 830046,China)

机构地区：[1]School of Physical Science and Technology,Xinjiang University,Urumqi 830046,China

出　　处：《Optoelectronics Letters》2020年第5期355-359,共5页光电子快报（英文版）

基　　金：This work has been supported by the National Natural Science Foundation of China Xinjiang Project(No.2019D01C036).

摘　　要：In this work,we studied the effect of different pH values on morphology,band gap and photoluminescence(PL)properties of Eu^3+/Tb^3+co-doped ZnO prepared by coprecipitation method.Experimental results show that alkaline condition is more favorable for the doping of Eu^3+and Tb^3+ions which reduce the band gap and increases the PL intensity of UV emission(385 nm)and visible emission(400—600 nm)of ZnO.Gaussian deconvolution PL spectra show that the defects on the surface of ZnO are decreased when it is synthesized under alkaline conditions.Furthermore,both the intrinsic orange emission of Eu3+ions(611 nm)and the intrinsic green emission of the Tb^3+ions(495 nm)of ZnO in this case are obtained at the same time.High intensity green and orange emission indicates that Eu^3+/Tb^3+co-doped ZnO is a promising PL material and has potential in emission devices.

关 键 词：ORANGE ALKALINE INTENSITY 

分 类 号：TB3[一般工业技术—材料科学与工程]