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Growth of mirror-like ultra-nanocrystalline diamond (UNCD) films by a facile hybrid CVD approach

MetadataDetails
Publication Date2017-03-31
JournalPlasma Science and Technology
AuthorsShuo Yang, Weidong Man, Jilei Lyu, Xiong Xiao, Zhiheng You
InstitutionsWuhan Institute of Technology, Ningbo Institute of Industrial Technology
Citations4

In this study, growth of mirror-like ultra-nanocrystalline diamond (UNCD) films by a facile hybrid CVD approach was presented. The nucleation and deposition of UNCD films were conducted in microwave plasma CVD (MPCVD) and direct current glow discharge CVD (DC GD CVD) on silicon substrates, respectively. A very high nucleation density (about 1 Ɨ 1011 nuclei cmāˆ’2) was obtained after plasma pretreatment. Furthermore, large area mirror-like UNCD films of Φ 50 mm were synthesized by DC GD CVD. The thickness and grain size of the UNCD films are 24 μm and 7.1 nm, respectively. In addition, the deposition mechanism of the UNCD films was discussed.