中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4585-4591.doi: 10.1088/1674-1056/17/12/042

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Synthesis and photoluminescence property of boron carbide nanowires

鲍丽宏, 李晨, 田园, 田继发, 惠超, 王兴军, 申承民, 高鸿钧   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2008-06-19 修回日期:2008-06-24 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    Project supported by the National High Technology Development Program of China (Grant No 2007AA03Z305) and the state Key Development Program for Basic Research of China (Grant No 2007CB935503) the National Science Foundation of China (Grants Nos 60571045,

Synthesis and photoluminescence property of boron carbide nanowires

Bao Li-Hong (鲍丽宏), Li Chen (李晨), Tian Yuan (田园), Tian Ji-Fa (田继发), Hui Chao (惠超), Wang Xing-Jun (王兴军), Shen Cheng-Min (申承民), Gao Hong-Jun (高鸿钧)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2008-06-19 Revised:2008-06-24 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    Project supported by the National High Technology Development Program of China (Grant No 2007AA03Z305) and the state Key Development Program for Basic Research of China (Grant No 2007CB935503) the National Science Foundation of China (Grants Nos 60571045,

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摘要： Large scale, high density boron carbide nanowires have been synthesized by using an improved carbothermal reduction method with B/B2O3/C powder precursors under an argon flow at 1100℃. The boron carbide nanowires are 5--10μm in length and 80--100nm in diameter. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) characterizations show that the boron carbide nanowire has a B4C rhombohedral structure with good crystallization. The Raman spectrum of the as-grown boron carbide nanowires is consistent with that of a B4C structure consisting of B11C icosahedra and C-B-C chains. The room temperature photoluminescence spectrum of the boron carbide nanowires exhibits a visible range of emission centred at 638nm.

Abstract: Large scale, high density boron carbide nanowires have been synthesized by using an improved carbothermal reduction method with B/B2O3/C powder precursors under an argon flow at 1100℃. The boron carbide nanowires are 5--10μm in length and 80--100nm in diameter. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) characterizations show that the boron carbide nanowire has a B4C rhombohedral structure with good crystallization. The Raman spectrum of the as-grown boron carbide nanowires is consistent with that of a B4C structure consisting of B11C icosahedra and C-B-C chains. The room temperature photoluminescence spectrum of the boron carbide nanowires exhibits a visible range of emission centred at 638nm.

Key words: carbothermal reduction, vapour-liquid-solid (VLS), Raman, photoluminescence

中图分类号:  (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties)

  • 68.65.-k
78.30.Hv (Other nonmetallic inorganics) 78.55.Hx (Other solid inorganic materials) 78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 81.07.-b (Nanoscale materials and structures: fabrication and characterization) 81.16.-c (Methods of micro- and nanofabrication and processing)