Fabrication and field emission characteristic of microcrystalline diamond/carbon nanotube double-layered pyramid arrays

Carbon Nanotubes Decorated with Platinum Nanoparticles for Field-Emission Application

“…According to our previous work, the grown NTs are attributed to the multiwall nanostructures. 14 As for the sample subjected to oxygen plasma treatment, its morphology remained the same as that of pristine sample (Figure 3c,d). Figure 3e–g represent CNT samples decorated with Pt NPs fabricated by ALD with 25, 50, and 100 cycles, respectively.…”

“…The linear curve of the high field segments of the F – N plot indicates the electron emission from the tunnel effect, and the slope of the curve is related to the FE enhancement factor (β). In the F – N theory, β can be calculated using the following equation 14 where B = −6.83 × 10 3 eV –3/2 V/μm –1 , m is the slope of high field segments of F – N plot and ψ is the work function of the emitter material with the assumption of 4.5 eV. 14 The enhancement factor β for the pristine CNTs, CNTs@Pt25, CNTs@Pt50, and CNTs@Pt100 were calculated to be 3571, 6715, 7537, and 17340, respectively.…”

“…More details can be found in our previous work. 14 The solutions were vigorously stirred for 1 h and later sonicated for 30 min to completely dissolve the iron nitrate. An n-type silicon wafer (100) was used as a substrate material for the growth of CNTs.…”

“…The catalyst for the growth of CNTs was prepared by mixing iron nitrate, tetrabutyl titanate, and n -propanol. More details can be found in our previous work . The solutions were vigorously stirred for 1 h and later sonicated for 30 min to completely dissolve the iron nitrate.…”

Photocatalytic and Optoelectronic Properties of Polycrystalline Diamond

“…According to the different grain size, there are microcrystalline diamond (MCD) [1] and nanocrystalline diamond (NCD). [2] Diamond crystals are potential candidates for quantum computing, biosensing field emission devices, thermionic solar cells, and other fields.…”