通过振动光谱法研究块状单晶金刚石在80 - 1200 K温度下的光学性质

Optical Properties of Bulk Single-Crystal Diamonds at 80-1200 K by Vibrational Spectroscopic Methods.

作者信息

Shi Zitao, Yuan Qilong, Wang Yuezhong, Nishimura Kazuhito, Yang Guojian, Zhang Bingxue, Jiang Nan, Li He

机构信息

Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo 315201, China.

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Materials (Basel). 2021 Dec 3;14(23):7435. doi: 10.3390/ma14237435.

DOI:10.3390/ma14237435

PMID:34885590

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8659058/

Abstract

Bulk diamonds show great potential for optical applications such as for use in infrared (IR) windows and temperature sensors. The development of optical-grade bulk diamond synthesis techniques has facilitated its extreme applications. Here, two kinds of bulk single-crystal diamonds, a high-pressure and high-temperature (HPHT) diamond and a chemical vapor deposition (CVD) diamond, were evaluated by Raman spectroscopy and Fourier Transform Infra-Red (FTIR) spectroscopy at a range of temperatures from 80 to 1200 K. The results showed that there was no obvious difference between the HPHT diamond and the CVD diamond in terms of XRD and Raman spectroscopy at 300-1200 K. The measured nitrogen content was ~270 and ~0.89 ppm for the HPHT diamond and the CVD diamond, respectively. The moderate nitrogen impurities did not significantly affect the temperature dependence of Raman spectra for temperature-sensing applications. However, the nitrogen impurities greatly influence FTIR spectroscopy and optical transmittance. The CVD diamond showed higher transmittance, up to 71% with only a ~6% drop at temperatures as high as 873 K. This study shows that CVD bulk diamonds can be used for IR windows under harsh environments.

摘要

块状钻石在光学应用方面展现出巨大潜力，例如用于红外（IR）窗口和温度传感器。光学级块状钻石合成技术的发展推动了其极端应用。在此，通过拉曼光谱和傅里叶变换红外（FTIR）光谱，在80至1200 K的温度范围内对两种块状单晶钻石，即高温高压（HPHT）钻石和化学气相沉积（CVD）钻石进行了评估。结果表明，在300 - 1200 K时，HPHT钻石和CVD钻石在X射线衍射（XRD）和拉曼光谱方面没有明显差异。HPHT钻石和CVD钻石测得的氮含量分别约为270 ppm和0.89 ppm。适度的氮杂质对用于温度传感应用的拉曼光谱的温度依赖性没有显著影响。然而，氮杂质对FTIR光谱和光学透过率有很大影响。CVD钻石显示出更高的透过率，高达71%，在高达873 K的温度下仅下降约6%。这项研究表明，CVD块状钻石可用于恶劣环境下的红外窗口。