溶胶-凝胶法制备氧化锌/石墨烯薄膜和退火温度对其光致发光的影响（英文）  

Effect of Annealing Temperature on Photoluminescence of ZnO/Graphene Nano-films Deposited by Sol-gel Method

作　　者：刘进[1] 吕媛媛[1] 张志勇[1] 闫军锋[1] 赵武[1] 允江妮[1] 翟春雪[1] 

机构地区：[1]西北大学,陕西西安710069

出　　处：《稀有金属材料与工程》2017年第4期888-892,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(61405159);Natural Science Foundation Research Project Key Projects of Shaanxi Province(2014JZ2-003);Natural Science Foundation of Shaanxi Province(2015JM6274)

摘　　要：在铜衬底通过低压化学气相淀积(LPCVD)和溶胶-凝胶法直接制备氧化锌/石墨烯纳米薄膜。分析退火温度对其结构、形态、化学状态和成分、光学性能的影响。XRD分析表明,氧化锌/石墨烯纳米结构表现出六方纤锌矿结构,晶体质量随退火温度从500℃到700℃的增加而提高。当退火温度达到700℃时,SEM显示,氧化锌薄膜呈现出颗粒均匀密集、表面光滑。其薄膜的平均颗粒尺寸约为35.7 nm。PL测量显示,退火温度为700℃时,氧化锌/石墨纳米薄膜具有较好的光学性能,这是因为样品的结晶质量较高且缺陷密度较低。ZnO/graphene nano-films were directly prepared on Cu substrate via low pressure chemical vapor deposition （LPCVD） combined with a sol-gel method. The effects of the annealing temperature on the structure, morphology, the chemical state, component, and optical property of these ZnO/grapbene nano-films were investigated. The XRD patterns demonstrate that the ZnO/graphene nanostructures exhibit the hexagonal wurtzite structure and the crystalline quality increases with increasing the annealing temperatures from 500 ℃ to 700 ℃. When the annealing temperature reaches 700℃, SEM analysis shows that sample film exhibits dense and uniform grains and smooth surface and the average grain size of film deposited 3 layers is about 35.7 nm. The PL measurement confirms that ZnO/graphene nano-film with deposited 3 layers at the armealing temperatures of 700 ℃ has a better optical performance, due to the higher crystalline quality and lower defect concentration.

关 键 词：石墨烯 氧化锌/石墨烯纳米薄膜 光致发光性质 石墨烯相关能级 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—热处理]