TY - JOUR
T1 - Field emission from hydrogen titanate nanotubes
AU - Chakraborty, Indrani
AU - Chatterjee, Sriparna
AU - Ayyub, Pushan
PY - 2011/10/3
Y1 - 2011/10/3
N2 - Hydrothermally synthesized hydrogen titanate (H2Ti 3O7) nanotube meshes and arrays exhibit excellent field emission characteristics. The turn-on field is as low as 1.4 V μm -1 for the mesh and 2.6 V μm-1 for the array, while the electric field corresponding to an emission current density of 10 μA cm -2 is 2 V μm-1 (mesh) and 3.8 V μm-1 (array). The H2Ti3O7 nanotube mesh has one of the lowest reported turn-on voltages and highest enhancement factors. The emission current also shows good long term stability. We attribute the efficient field emission to the presence of mid-gap states arising from the negative surface charge on the H2Ti3O7 nanotubes.
AB - Hydrothermally synthesized hydrogen titanate (H2Ti 3O7) nanotube meshes and arrays exhibit excellent field emission characteristics. The turn-on field is as low as 1.4 V μm -1 for the mesh and 2.6 V μm-1 for the array, while the electric field corresponding to an emission current density of 10 μA cm -2 is 2 V μm-1 (mesh) and 3.8 V μm-1 (array). The H2Ti3O7 nanotube mesh has one of the lowest reported turn-on voltages and highest enhancement factors. The emission current also shows good long term stability. We attribute the efficient field emission to the presence of mid-gap states arising from the negative surface charge on the H2Ti3O7 nanotubes.
UR - http://www.scopus.com/inward/record.url?scp=80053972877&partnerID=8YFLogxK
U2 - 10.1063/1.3646401
DO - 10.1063/1.3646401
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:80053972877
SN - 0003-6951
VL - 99
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 14
M1 - 143106
ER -