Boron nanotubes (BNTs) have been theoretically proposed to have metallic properties whether they are in armchair or zigzag structure, so they have attracted much interest from researchers. However, their real properties have been not understood until now because they are hard to synthesize. In this paper, we have successfully fabricated a large quantity of boron nanotubes, which may provide a way to master their electric and field emission (FE) properties. Study on individual boron nanotubes shows that BNTs have metallic properties with an averaged conductivity of 40 Ω~(-1) cm~(-1). Moreover, individual BNTs can sustain a high current of about 80 μA and their current density can reach 2.04 x 10~(11) A m~(-1), which is very close to those of CNTs. They are also incorporated into prototype luminescent tube devices for the first time and exhibit high luminescent efficiency and stability, which suggests that BNTs have a promising future in the FE area.
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机译:从理论上讲,硼纳米管(BNT)具有扶手椅或锯齿状的金属特性,因此引起了研究者的极大兴趣。但是,直到现在为止,由于它们的合成困难,因此尚未真正了解它们的性质。在本文中,我们成功地制造了大量的硼纳米管,这可能提供一种掌握其电和场发射(FE)特性的方法。对单个硼纳米管的研究表明,BNT具有金属性质,平均电导率为40Ω〜(-1)cm〜(-1)。此外,单个BNT可以承受约80μA的高电流,其电流密度可以达到2.04 x 10〜(11)A m〜(-1),非常接近CNT的电流密度。它们还首次被集成到原型发光管设备中,并展现出高发光效率和稳定性,这表明BNT在FE领域具有广阔的发展前景。
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