title: Self-assembly and cathodoluminescence of microbelts from Cu-doped boron nitride nanotubes.
abstract: We report the self-assembly of microbelts from Cu-doped boron nitride nanotubes by chemical vapor deposition using Cu as a catalyst. The BN nanotubes with Cu-encapsulated flat tips have uniform outer diameters of approximately 240 nm, inner diameters of approximately 210 nm, and lengths of approximately 10 microm, and Cu is found to uniformly dope into the nanotubes. Most importantly, the nanotubes are self-assembled to form microbelts with 10 microm in width and tens of micrometers in length. Strong and tunable light emissions from the ultraviolet to visible light range are observed in such Cu-doped microbelts, showing their high potential for applications in lasing, light-emitting diode, and medical diagnosis devices.
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Chen
authors.forename: Jin
authors.initials: J
authors.lastname: Zou
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Liu
authors.forename: Chenghua
authors.initials: C
authors.lastname: Sun
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Yao
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.forename: Bo
authors.initials: B
authors.lastname: Wu
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Yuan
authors.forename: Takashi
authors.initials: T
authors.lastname: Sekiguchi
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Cheng
authors.forename: Gao Qing
authors.initials: GQ
authors.lastname: Lu
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D004566:Electrodes; D008029:Lighting / Q000379:methods*; D008163:Luminescent Measurements / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D001896:Boron Compounds; D046911:Macromolecular Substances; C017282:boron nitride; D003300:Copper