Nanoplasmonic 1D Diamond UV Photodetectors with High Performance
Nanoplasmonic 1D Diamond UV Photodetectors with High Performance
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DOI：
10.1021/acsami.9b13321
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发表时间：
2019-10-16
影响因子：
9.5
通讯作者：
Feng, Peter X.
中科院分区：
文献类型：
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作者：
Zhou, Andrew F.;Velazquez, Rafael;Feng, Peter X.
金刚石纳米线由于其独特的物理和化学性质在电化学传感器、光电子学和纳米光子学等方面的应用，近年来引起了人们的广泛关注。然而，基于金刚石纳米线的紫外光探测器尚未被报道，因为合成具有可控形态的结晶金刚石纳米线所涉及的挑战，以及更根本的是，该材料的高载流子浓度和低迁移率限制了可获得的光响应性。超纳米金刚石纳米线与贵金属纳米粒子增强纳米等离子体激元的协同集成是克服这些缺点的一种非常有前途的方法。在这里，我们报告的制造硼掺杂超纳米金刚石纳米线功能化的铂纳米颗粒，形成自供电的紫外光电探测器，表现出一个快速的响应时间约为20 ms，在300 nm波长的388 Ω/瓦，和一个良好的紫外/可见光抑制比约5个数量级的零偏压条件下。
Diamond nanowires have recently drawn substantial attention because of their unique physical and chemical properties for electrochemical sensors, optoelectronics, and nanophotonics applications. However, diamond nanowire-based ultraviolet photodetectors have not been reported because of the challenges involved in synthesizing crystalline diamond nanowires with controllable morphologies and, more fundamentally, the material's high carrier concentration with low mobilities that limits the obtainable photoresponsivity. The synergetic integration of ultrananocrystalline diamond (UNCD) nanowires with nanoplasmonic enhancement by noble metal nanoparticles is a very promising approach to overcome these shortcomings. Here we report the fabrication of boron-doped ultrananocrystalline diamond nanowires functionalized with the platinum nanoparticles to form self-powered ultraviolet photodetectors that exhibit an ultrahigh photoresponsivity of 388 Amp/Watt at 300 nm wavelength, a fast response time around 20 ms, and a good UV/visible rejection ratio of about 5 orders of magnitude under zero-bias condition.