Praseodymium hexaboride (PrB_6) nanowires have been successfully fabricated for the first time with the self-catalyst method using praseodymium (Pr) powders and boron trichloride (BCl_3) gas mixed with hydrogen and argon. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to characterize the compositions, morphologies and structures of the samples. Field-emission measurements on the PrB_6 nanowires showed that a current emission density of 3.3 x 10~4 A cm~(-2) was achieved at a voltage of 1457 V with an effective cmission area as small as 1.2 mu m~2. A growth mechanism on the self-catalyst process is proposed for the formation of the PrB_6 nanostructures.
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机译：六溴化（PrB_6）纳米线已首次通过自催化方法成功地使用using（Pr）粉末和三氯化硼（BCl_3）气体与氢和氩混合而成。 X射线衍射（XRD），扫描电子显微镜（SEM）和透射电子显微镜（TEM）用于表征样品的组成，形态和结构。对PrB_6纳米线的场发射测量表明，在1457 V的电压下，有效发射面积小至1.2μm〜2时，实现了3.3 x 10〜4 A cm〜（-2）的电流发射密度。提出了自催化过程的生长机理，以形成PrB_6纳米结构。
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