Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Plasma Treatments and Light Extraction from Fluorinated CVD-Grown (400) Single Crystal Diamond Nanopillars
oleh: Mariusz Radtke, Abdallah Slablab, Sandra Van Vlierberghe, Chao-Nan Lin, Ying-Jie Lu, Chong-Xin Shan
Format: | Article |
---|---|
Diterbitkan: | MDPI AG 2020-06-01 |
Deskripsi
We investigate the possibilities to realize light extraction from single crystal diamond (SCD) nanopillars. This was achieved by dedicated 519 nm laser-induced spin-state initiation of negatively charged nitrogen vacancies <i>(NV<sup>−</sup>)</i>. We focus on the naturally-generated by chemical vapor deposition (CVD) growth of <i>NV<sup>−</sup></i>. Applied diamond was neither implanted with <sup>14</sup>N<sup>+</sup>, nor was the CVD synthesized SCD annealed. To investigate the possibility of light extraction by the utilization of <i>NV<sup>−</sup></i>’s bright photoluminescence at room temperature and ambient conditions with the waveguiding effect, we have performed a top-down nanofabrication of SCD by electron beam lithography (EBL) and dry inductively-coupled plasma/reactive ion etching (ICP-RIE) to generate light focusing nanopillars. In addition, we have fluorinated the diamond’s surface by dedicated 0 V SF<sub>6</sub> ICP plasma. Light extraction and spin manipulations were performed with photoluminescence (PL) spectroscopy and optically detected magnetic resonance (ODMR) at room temperature. We have observed a remarkable effect based on the selective 0 V SF<sub>6</sub> plasma etching and surprisingly, in contrast to literature findings, deactivation of <i>NV<sup>−</sup></i> centers. We discuss the possible deactivation mechanism in detail.