Hexagonal Boron Nitride Coated Carbon Nanotubes: Interlayer Polarization Improved Field Emission

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• 作者：Han-Chen Chang ; Hsin-Jung Tsai ; Wen-Yi Lin ; Yung-Chi Chu ; Wen-Kuang Hsu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 8, 2015
• 年：2015
• 卷：7
• 期：26
• 页码：14456-14462
• 全文大小：592K
• ISSN：1944-8252

文摘

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.