本文選題：NV色心　切入點：熒光光譜　出處：《光譜學(xué)與光譜分析》2017年05期 　論文類型：期刊論文

【摘要】：金剛石NV-色心具有優(yōu)越的光致發(fā)光特性,可實現(xiàn)高靈敏度物理量探測。其中,NV-色心的濃度是影響其宏觀領(lǐng)域物理量探測靈敏度的重要因素之一。分析了金剛石在NV-色心制備過程中產(chǎn)生的發(fā)光缺陷,研究了不同的電子注入劑量與NV-色心濃度的關(guān)系。首先,對金剛石進行電子輻照并高溫真空退火,制備了NV-色心;然后,利用拉曼光譜儀測試了金剛石在電子輻照前、電子輻照后及退火后三個階段中的熒光光譜,分析了金剛石在NV-色心制備過程中的光譜特性;最后,對生成的NV-色心的濃度進行了估算,并探究了不同電子注入劑量對NV-色心濃度的影響規(guī)律。結(jié)果表明,金剛石經(jīng)電子注入后生成了524.7,541.1,578和648.1nm發(fā)光中心。其中,HPHT合成金剛石經(jīng)電子注入后普遍存在524.7nm中心。電子注入后的金剛石經(jīng)高溫(≥800℃)真空(≥10-7 Pa)退火后,空位自由移動,不穩(wěn)定的缺陷消失,當(dāng)空位靠近氮原子時被束縛而形成氮空位色心。對于氮含量100ppm的金剛石,當(dāng)電子注入產(chǎn)生的空位含量小于120ppm(2.1×1019 cm-3)時,NV-色心濃度與電子注入生成空位的含量的關(guān)系符合Boltzmann分布。該研究為利用氮含量100ppm的金剛石實現(xiàn)定量NV-色心濃度的制備提供了參考依據(jù),為NV-色心在宏觀物理量精密測量的應(yīng)用奠定了基礎(chǔ)。
[Abstract]:Diamond NV- color center has excellent photoluminescence properties, High sensitivity physical quantity detection can be realized. The concentration of NV- color center is one of the important factors that affect the detection sensitivity of physical quantity in macroscopical field. The luminescence defects of diamond in the preparation of NV- color center are analyzed. The relationship between different electron implantation doses and NV- color center concentration was studied. Firstly, the NV- color center was prepared by electron irradiation and vacuum annealing at high temperature, and then the diamond was measured by Raman spectroscopy before electron irradiation. After electron irradiation and annealing, the spectral characteristics of diamond in the preparation of NV- color center were analyzed. Finally, the concentration of the generated NV- color center was estimated. The effects of different electron implantation doses on NV- color center concentration were investigated. After electron implantation, 524.7Nm and 648.1nm photoluminescence centers were formed in diamond. There are 524.7 nm centers in diamond synthesized by HPHT. After annealing at high temperature (鈮，

本文編號：1565839