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Field emission properties of nitrogen(N)-doped diamond with different dopant concentrations were investigated. Time-of-flight secondary ion mass spectroscopy measurement on the diamond samples showed a correlation between threshold field and the intensity of carbon(C)-nitrogen(N). This suggests that the N incorporation in the form of C-N, may be responsible for the extremely low threshold emission...
We have been focusing on fabricating a photodetector that consists of a diamond cold cathode and an amorphous selenium (a-Se) photoconductor, which is one of the practical applications of a cold cathode. We have previously succeeded in achieving a proto-type photodetector of which a heavily nitrogen (N)-doped diamond was used as the cold cathode, and the results indeed showed a low operation voltage...
In this paper, a) a-Se, b) lightly As doped a-Se and c) heavily As doped a-Se films were fabricated by multi-layered vacuum evaporation method as introduced in previous report. To explain briefly, Se and As 2Se3 were charged into the boat as the evaporation source and the sample holder rotates on top of both sources to create a multi-layered film. A slit was introduced on top of the As2Se 3 to limit...
In this study, combined X-ray photoelectron spectroscopy (XPS)/ultraviolet photoelectron spectroscopy (UPS)/field emission spectroscopy (FES) system was used to characterize the electron emission mechanism of doped CVD diamond. The energy band diagram of emitting diamond is drawn using the electron energy distribution obtained from the system
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