高压物理学报2026，Vol.40Issue(9)：129-140,12.DOI:10.11858/gywlxb.20261106
高温高压预处理诱导的氮聚集及其对金刚石NV色心表观电荷态比的影响
Nitrogen Aggregation Induced by High-Pressure High-Temperature Pretreatment and Its Effect on the Apparent Charge-State Ratio of NV Centers in Diamond
摘要
Abstract
Formation of nitrogen-vacancy(NV)centers and their apparent charge-state response in high-pressure high-temperature(HPHT)type-Ⅰb diamond were investigated.Effects of the initial substitutional nitrogen content(C-center nitrogen),electron irradiation,vacuum annealing,and HPHT pretreatment on the photoluminescence(PL)behavior of NV centers were compared.Two groups of HPHT diamond single crystals with different C-center nitrogen contents were subjected to electron irradiation,vacuum annealing(600-1 000℃),and HPHT pretreatment(5 GPa,1 100-1 900℃).Fourier-transform infrared spectroscopy(FTIR),Raman spectroscopy,and photoluminescence spectroscopy were employed to analyze nitrogen aggregation,lattice state,and NV-related photoluminescence responses.The results show that high-nitrogen samples exhibit more pronounced NV-related emission,whereas irradiation-induced vacancies in the low-nitrogen samples tend to remain as GR1 centers.As the vacuum annealing temperature increases,the overall emission intensities of NV0 and NV-increase,while the apparent photoluminescence response of NV-relative to NV0 generally decreases.HPHT pretreatment does not directly generate a large number of NV centers but promotes nitrogen aggregation and modifies the apparent NV-/NV0 charge-state ratio during subsequent irradiation and annealing.These results indicate that HPHT pretreatment can serve as a preceding processing parameter for regulating the initial defect state before irradiation and the subsequent apparent charge-state ratio of NV centers.关键词
金刚石/氮空位色心/电子辐照/真空退火/高温高压Key words
diamond/nitrogen-vacancy(NV)center/electron irradiation/vacuum annealing/high-pressure high-temperature分类
数理科学引用本文复制引用
李玮健,陈宁,王宏伟,王浩,赵仕修,潘益龙..高温高压预处理诱导的氮聚集及其对金刚石NV色心表观电荷态比的影响[J].高压物理学报,2026,40(9):129-140,12.基金项目
国家重点研发计划(2023YFA1406200) （2023YFA1406200）
国家留学基金(202507580064) （202507580064）
国家博士后项目 （）
甬江人才计划(2024A-119-G) （2024A-119-G）
浙江省优秀青年科学家基金会 （）
宁波市自然科学基金(2025J117) （2025J117）
