title: Hexagonal Boron Nitride Coated Carbon Nanotubes: Interlayer Polarization Improved Field Emission.
abstract: Coating of h-BN onto carbon nanotubes induces polarization at interfaces, and charges become localized at N and C atoms. Field emission of coated tubes is found to be highly stable, and current density fluctuates within 4%. Study further reveals that the electric field established between coatings and tubes facilitates charge transfer across interfaces and electrons are emitted through occupied and unoccupied bands of N and B atoms.
authors.affiliation: Department of Materials Science and Engineering, National Tsinghua University, HsinChu 30013, Taiwan.
authors.forename: Han-Chen
authors.initials: HC
authors.lastname: Chang
authors.affiliation: Department of Materials Science and Engineering, National Tsinghua University, HsinChu 30013, Taiwan.
authors.forename: Hsin-Jung
authors.initials: HJ
authors.lastname: Tsai
authors.affiliation: Department of Materials Science and Engineering, National Tsinghua University, HsinChu 30013, Taiwan.
authors.forename: Wen-Yi
authors.initials: WY
authors.lastname: Lin
authors.affiliation: Department of Materials Science and Engineering, National Tsinghua University, HsinChu 30013, Taiwan.
authors.forename: Yung-Chi
authors.initials: YC
authors.lastname: Chu
authors.affiliation: Department of Materials Science and Engineering, National Tsinghua University, HsinChu 30013, Taiwan.
authors.forename: Wen-Kuang
authors.initials: WK
authors.lastname: Hsu
keywords: Fowler−Nordheim equation; Mulliken charge; ab initio calculation; boron nitride; carbon nanotubes; field emission; interlayer polarization