Effects of microwave oxygen plasma treatments on microstructure and Ge-V photoluminescent properties of diamond particles

Sheng Ling-Xiao, Chen Cheng-Ke, Jiang Mei-Yan, Li Xiao, Hu Xiao-Jun^†

(a) PL spectra, variation of (b) position and FWHM values and (c) normalized intensity of Ge-V PL peak of samples with microwave oxygen plasma treatment time.