摘要
以KOH,Nb_2O_5为原料,通过激光诱导法成功地在常温常压条件下制备出直径均匀、结晶性良好的铌酸钾纳米线。产物经XRD,SEM,Raman和UV-Vis等技术进行表征,并研究铌酸钾纳米线的光吸收和光致发光性能。结果表明:激光诱导产物化学式为KNb3O8(空间群为Pmmm(47),为正交晶系),纳米线的生长机制为SLS机制。纳米线的带隙宽度为2.84eV,在436nm处有一较强的蓝色发光峰。
Under normal temperature and pressure conditions,potassium niobate nanowires with uniform diameter and good crystallinity were prepared by laser-induced method using KOH and Nb2O5 as raw materials.The samples were characterized by XRD,SEM,Raman and UV-Vis,the light absorption and photoluminescence properties of potassium niobate nanowires were studied.The results show that the chemical formula of laser-induced samples is KNb3O8（the space group is Pmmm（47）,which is orthorhombic system）.The growth mechanism of nanowires is the SLS mechanism.The band gap of the prepared nanowires is 2.84 eV,there is a strong blue emission peak at 436 nm.
作者
李瑞
刘立英
姬宇航
王如志
杨炎翰
胡安明
白石
LI Rui1 ,LIU Li-ying2 ,JI Yu-hang1 ,WANG Ru-zhi1, YANG Yan-ban1 ,HU An-ming3 ,BAI Shi3(1 College of Materials Science and Engineering,Beijing University of Technology, Beijing 100124, China; 2 College of Applied Science, Beijing University of Technology, Beijing 100124, China ; 3 Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2018年第11期51-56,共6页
Journal of Materials Engineering
基金
国家自然科学基金(51472010
11774017)
北京工业大学日新人才支持计划(0060000514117010)
北京市留学人员科技项目择优资助重点类项目
北京市属高校高水平创新团队建设计划项目(IDHT20170502)
关键词
激光诱导
铌酸钾纳米线
生长机制
带隙宽度
光致发光
laser induced
potassium niobate nanowire
growth mechanism
band gap
photoluminescence
