[15a-D215-1~12] 7.2 Applications and technologies of electron beams

[15a-D215-8] Field emission spectroscopy characteristics of graphene/n-type diamond structure

〇Tomoaki Masuzawa¹, Ken Okano³, Hidenori Mimura¹, Takatoshi Yamada² (1.Shizuoka Univ., 2.AIST, 3.ICU)

Keywords:graphene, phosphorus-doped diamond, field emission

In this study, a graphene was formed on a heavily P-doped diamond to form a graphene/n-type diamond structure. Electron emission from the structure was characterized by field emitted electron spectroscopy (FES) and ultraviolet photoelectron spectroscopy(UPS). The FES and UPS results showed that the electrons were emitted from Fermi level of the graphene at low applied voltages, but were emitted from the valence band of the diamond at increased applied voltages. It was confirmed that even a single graphene layer modified the electron emission mechanism.