Far-ultraviolet plane-emission handheld device based on hexagonal boron nitride
Far-ultraviolet plane-emission handheld device based on hexagonal boron nitride
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DOI：
10.1038/nphoton.2009.167
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发表时间：
2009-10-01
期刊：
影响因子：
35
通讯作者：
Taniguchi, Masateru
中科院分区：
文献类型：
--
作者：
Watanabe, Kenji;Taniguchi, Takashi;Taniguchi, Masateru
许多研究人员一直在尝试生产具有更长的工作寿命的高效固态器件，用于远紫外波长区域，作为传统远紫外灯的替代品。然而，由于远紫外操作效率较低，研究人员仍在继续开发性能足够高的远紫外器件（1,2）。本文研究了六方氮化硼作为远紫外荧光材料的潜力。具体而言，利用六方氮化硼(3)的高发光特性，制备了一种以场发射阵列(4)为激励源的远紫外平面发射紧凑型器件，并证明了其在225 nm处稳定工作，输出功率为0.2 mW。由于其低电流消耗在运行中，该装置可以由干电池驱动。这种方便的远紫外装置可能在光化学和生物技术应用中非常有用，如光催化、杀菌和净化。化学物质的阳离子。
Many researchers have been trying to produce highly efficient solid-state devices with longer operating lives for the far-ultraviolet wavelength region as an alternative to conventional far-ultraviolet lamps. However, owing to the low efficiency of far-ultraviolet operation, research continues into the development of far-ultraviolet devices with sufficiently high performance(1,2). Here, the potential of hexagonal boron nitride as a far-ultraviolet fluorescent material is studied. Specifically, taking advantage of the highly luminous properties of hexagonal boron nitride(3), a far-ultraviolet plane-emission compact device equipped with a field-emission array(4) as an excitation source is fabricated, and its stable operation with an output power of 0.2 mW at 225 nm demonstrated. Because of its low current consumption in operation, the device can be driven by dry batteries. This convenient far-ultraviolet device is likely to prove extremely useful in photochemical and biotechnological applications such as photocatalysis, sterilization and modi. cation of chemical substances.