电沉积氧化锌纳米柱的带隙和近带边发射蓝移  

Band Gap Energy and Near Band Edge Emission Blue Shifts of ZnO Nanorods Prepared by Electrodeposition

作　　者：汤洋 TANG Yang(Center for Green Energy and Architecture,China Energy Investment Corporation,Beijing 102211,China;National Institute of Clean-and-Low-Carbon Energy,Beijing 102211,China)

机构地区：[1]国家能源集团绿色能源与建筑研究中心,北京102211 [2]北京低碳清洁能源研究院,北京102211

出　　处：《材料研究学报》2020年第11期875-880,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金(61404007);北京市优秀人才培养拔尖自然科学项目(2015000021223ZK38)。

摘　　要：用电化学沉积方法制备了ZnO纳米柱阵列。在Zn(NO3)2基础电解液中加入新电解质并引入NH4NO3和Ga(NO3)3,实现了对ZnO纳米柱阵列的带隙、近带边发射、斯托克斯位移、直径、密度等物理性质的设计和裁剪。可在63~77 nm操控纳米柱的直径。增加电解液中的Ga(NO3)3浓度,阵列的密度可降低到7.0×109/cm2。新加入电解液中的盐类使ZnO纳米柱的带隙蓝移~50 meV并使光致发光图谱中的近带边发射蓝移53~73 meV以及斯托克斯位移蓝移23 meV,表明可对其非辐射复合进行抑制设计和裁剪。ZnO nanorod arrays were fabricated by electrodeposition in the traditional electrolytes incorporated with addition of salts such as NH4NO3 and Ga(NO3)3,so that the phyisical properties,such as the diameter,density,band gap energy,near band edge emission and stokes shift of the prepared ZnO nanorod arrays may be designed and tailored.Namely their diameter can be adjusted between 63 nm to77 nm.With the use of Ga(NO3)3 as the additive,the density of ZnO nanorod arrays can be decreased to 7.0×109/cm2;the band gap energy of the ZnO nanorod arrays showed blue shift from 53 meV to 73 meV with the stokes shift of 23 meV,which indicated that the new process of involving the Ga(NO3)3 resulted in the suppression of the non-radiative recombination.

关 键 词：无机非金属材料 氧化锌 电沉积 硝酸镓 带隙蓝移 近带边发射 

分 类 号：TM23[一般工业技术—材料科学与工程]