Synthesis of N-type semiconductor diamonds with sulfur, boron co-doping in FeNiMnCo-C system at high pressure and high temperature

Zhang He¹, Li Shangsheng^{1, †}, Su Taichao¹, Hu Meihua¹, Ma Hongan², Jia Xiaopeng², Li Yong³

(color online) Photographs of large diamonds synthesized with different contents of sulfur and boron (nitrogen getter: Ti and Cu (1.51 wt.%), (a) with 0% S, (b) with 2% S, (c) with 0.2% B and 2% S, (d) with 0.8% B and 2% S, (e) with 1.2% B and 2% S).