Yan Bing-Min, Jia Xiao-Peng, Qin Jie-Ming, Sun Shi-Shuai, Zhou Zhen-Xiang, Fang Chao, Ma Hong-An. Characterization of typical infrared characteristic peaks of hydrogen in nitrogen and hydrogen co-doped diamond crystalsJ. Acta Physica Sinica, 2014, 63(4): 048101. DOI: 10.7498/aps.63.048101