Affiliation:
1. East China Normal University
Abstract
The negatively charged nitrogen−vacancy (NV−) center ensembles in diamonds offer enormous potential for developing integrated sensors with an improved signal-to-noise ratio (SNR) and high sensitivity. However, the preparation and treatment of diamond samples with suitable NV− concentrations and dephasing time have remained challenging. This work provided insight into the NV− center formation mechanism and reconstruction via a comprehensive analysis of the concentration and dephasing time of a set of diamond samples treated by various parameters. By varying the electron irradiation dose and subsequent annealing duration, the conversion rate of nitrogen to NV− is up to 18.45%, and the corresponding maximum NV− concentration is 3.69 ppm. The dephasing time for all samples varies around 300 ns. The nitrogen-related NV− center ensemble dephasing rate per unit density is 146.4 (ppm·ms)−1, indicating that the treatment did not substantially alter the paramagnetic spin environment around the NV− center. This study not only offers support to exquisite sensitivities of NV-based sensors but also provides valuable experience for the preparation of unique properties of synthetic diamonds.
Funder
National Natural Science Foundation of China
Subject
Electronic, Optical and Magnetic Materials
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献