Preparation of step-flow grown diamond films and directionally oriented NV center ensembles

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-04-28 DOI:10.1016/j.diamond.2025.112387

Xin Tan , Jian Wang , Xiangsheng Li , Xueyuan Wei , Qiao Yang , Zhanqing He , Hui Qi , Bochen Zhang , Dachuan Meng , Zhengyu Liang , Shiyang Sun

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Abstract

The nitrogen-vacancy (NV) color center in diamond, serving as an ideal solid-state sensing structure in quantum sensing, holds significant value. However, due to the random orientation distribution of NV center, it results in low contrast in magnetic detection. This study employed microwave plasma chemical vapor deposition equipment to prepare diamond (111) thin film Substrate with smooth and uniform surfaces, utilizing epitaxial growth principles and hydrofluoric acid separation techniques for improved orientation consistency. Explored the effects of methane concentration and deposition temperature on the step-flow growth of diamond (111) thin film. Introduction of ammonia gas facilitated the directed preparation of NV color center, achieving an alignment rate of 46 % as detected by ODMR. The contrast reached a high of 4.5 %, and magnetic sensitivity, as indicated by the F/C ratio, improved threefold, laying a foundation for future advancements in optical and magnetic sensing fields.

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阶梯流生长金刚石薄膜的制备及定向NV中心系综

金刚石中的氮空位（NV）色心作为量子传感中理想的固态传感结构，具有重要的应用价值。然而，由于NV中心的方向分布是随机的，导致在磁检测中对比度较低。本研究采用微波等离子体化学气相沉积设备制备表面光滑均匀的金刚石（111）薄膜衬底，利用外延生长原理和氢氟酸分离技术提高取向一致性。探讨了甲烷浓度和沉积温度对金刚石（111）薄膜阶梯流生长的影响。氨气的引入促进了NV色心的定向制备，ODMR检测的对准率达到46%。对比度达到了4.5%，磁灵敏度（F/C比）提高了三倍，为光学和磁传感领域的未来发展奠定了基础。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.