Decreasing Work Function of Carbon Nanotubes Hydrogenated in Hydrogen Plasma

Heterojunctions on Ta2O5@MWCNT for Ultrasensitive Ethanol Sensing at Room Temperature

“…It can be confirmed from UV–vis that the energy band-gap values of the pure Ta 2 O 5 and the MWCNT are E g 1 = 4.18 eV and E g 2 = 0.91 eV, respectively, as shown in Figure g–h. In addition, the work function values of the pure Ta 2 O 5 and the MWCNT are W 1 = 3.2 eV and W 2 = 4.8 eV, respectively, according to the previous literature. , Figure e,f exhibits the valence band XPS of the pristine Ta 2 O 5 and the MWCNTs are VBM 1 = 1.78 eV and VBM 2 = 0.86 eV, respectively. Based on the available data, we can draw the energy band structure diagram of the Ta 2 O 5 @MWCNT p–n heterojunction (Figure ).…”

Additive Influence of Top Metal Contact and Alumina Deposition on the Threshold Voltage of Suspended Carbon Nanotube Field-Effect Transistors

“…3. , Note that the work function of the CNT can be influenced under such processing conditions. A decreasing work function of (MW) CNTs from ϕ CNT ∼ 4.8 eV to ϕ CNT ∼ 3.3 eV on exposure to hydrogen-containing plasma has been reported by Bulyarskiy et al Such a change in the work function can influence the overall Ψ Bp and CNTFET characteristics.…”