中国物理B ›› 2025, Vol. 34 ›› Issue (8): 86103-086103.doi: 10.1088/1674-1056/add8ff

所属专题： SPECIAL TOPIC — Structures and properties of materials under high pressure

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Low-temperature photoluminescence study of optical centers in HPHT-diamonds

Liangchao Chen(陈良超)1, Xinyuan Miao(苗辛原)2,†, Zhuangfei Zhang(张壮飞)1, Biao Wan(万彪)1, Yuewen Zhang(张跃文)1, Qianqian Wang(王倩倩)1, Longsuo Guo(郭龙锁)3,‡, and Chao Fang(房超)1,§   

  1. 1 Key Laboratory of Material Physics of Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou 450052, China;
    2 College of Physics, Guangxi University of Science and Technology, Liuzhou 545006, China;
    3 Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
  • 收稿日期:2025-01-23 修回日期:2025-04-18 接受日期:2025-05-15 出版日期:2025-07-17 发布日期:2025-08-05
  • 通讯作者: Xinyuan Miao, Longsuo Guo, Chao Fang E-mail:miaoxy@gxust.edu.cn;guols@sdas.org;fangchao1989@zzu.edu.cn
  • 基金资助:
    This project was supported by the National Natural Science Foundation of China (Grant Nos. 12274373, 12274372, and 12204259), the Natural Science Foundation of Henan Province (Grant No. 242300421155), the Key Research Projects of Higher Education Institutions in Henan Province (Grant No. 25A140008), the Science and Technology Base and Talent Project of Guangxi, China (Grant No. AD21220154), and the Central Plains Science and Technology Innovation Youth Top Notch Talents.

Low-temperature photoluminescence study of optical centers in HPHT-diamonds

Liangchao Chen(陈良超)1, Xinyuan Miao(苗辛原)2,†, Zhuangfei Zhang(张壮飞)1, Biao Wan(万彪)1, Yuewen Zhang(张跃文)1, Qianqian Wang(王倩倩)1, Longsuo Guo(郭龙锁)3,‡, and Chao Fang(房超)1,§   

  1. 1 Key Laboratory of Material Physics of Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou 450052, China;
    2 College of Physics, Guangxi University of Science and Technology, Liuzhou 545006, China;
    3 Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
  • Received:2025-01-23 Revised:2025-04-18 Accepted:2025-05-15 Online:2025-07-17 Published:2025-08-05
  • Contact: Xinyuan Miao, Longsuo Guo, Chao Fang E-mail:miaoxy@gxust.edu.cn;guols@sdas.org;fangchao1989@zzu.edu.cn
  • Supported by:
    This project was supported by the National Natural Science Foundation of China (Grant Nos. 12274373, 12274372, and 12204259), the Natural Science Foundation of Henan Province (Grant No. 242300421155), the Key Research Projects of Higher Education Institutions in Henan Province (Grant No. 25A140008), the Science and Technology Base and Talent Project of Guangxi, China (Grant No. AD21220154), and the Central Plains Science and Technology Innovation Youth Top Notch Talents.

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摘要： The properties and creation of optical centers in diamond are essential for applications in quantum technology. Here, we study the photoluminescence (PL) spectroscopy behavior at low temperatures of diamond subjected to electron irradiation and annealing heat treatment. Through temperature variation testing, it was found that the NV$^{-}$ center intensity of diamond with a nitrogen content of 150 ppm before treatment is insensitive to the experimental temperature, but significantly increases with decreasing temperature after treatment, showing sensitivity to temperature. In addition, the H3 center also shows an increasing trend with decreasing temperature. The results of annealing diamond with a nitrogen content of 730 ppm showed that even at a low temperature of 93 K, no NV$^{-}$ centers were detected, but there were a large number of Ni-N related centers, especially NE8 centers. Our findings can promote a deeper understanding of the behavioral characteristics of HPHT-diamond optical centers in low-temperature environments.

关键词: high temperature and high pressure, diamond, optical centers, photoluminescence

Abstract: The properties and creation of optical centers in diamond are essential for applications in quantum technology. Here, we study the photoluminescence (PL) spectroscopy behavior at low temperatures of diamond subjected to electron irradiation and annealing heat treatment. Through temperature variation testing, it was found that the NV$^{-}$ center intensity of diamond with a nitrogen content of 150 ppm before treatment is insensitive to the experimental temperature, but significantly increases with decreasing temperature after treatment, showing sensitivity to temperature. In addition, the H3 center also shows an increasing trend with decreasing temperature. The results of annealing diamond with a nitrogen content of 730 ppm showed that even at a low temperature of 93 K, no NV$^{-}$ centers were detected, but there were a large number of Ni-N related centers, especially NE8 centers. Our findings can promote a deeper understanding of the behavioral characteristics of HPHT-diamond optical centers in low-temperature environments.

Key words: high temperature and high pressure, diamond, optical centers, photoluminescence

中图分类号:  (Color centers)

  • 61.72.jn
61.72.S- (Impurities in crystals) 67.80.dj (Defects, impurities, and diffusion) 74.25.Gz (Optical properties)