title: Field emission luminescence of nanodiamonds deposited on the aligned carbon nanotube array.
abstract: Detonation nanodiamonds (NDs) were deposited on the surface of aligned carbon nanotubes (CNTs) by immersing a CNT array in an aqueous suspension of NDs in dimethylsulfoxide (DMSO). The structure and electronic state of the obtained CNT-ND hybrid material were studied using optical and electron microscopy and Infrared, Raman, X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopy. A non-covalent interaction between NDs and CNT and preservation of vertical orientation of CNTs in the hybrid were revealed. We showed that current-voltage characteristics of the CNT-ND cathode are changed depending on the applied field; below ~3 V/µm they are similar to those of the initial CNT array and at the higher field they are close to the ND behavior. Involvement of the NDs in field emission process resulted in blue luminescence of the hybrid surface at an electric field higher than 3.5 V/µm. Photoluminescence measurements showed that the NDs emit blue-green light, while blue luminescence prevails in the CNT-ND hybrid. The quenching of green luminescence was attributed to a partial removal of oxygen-containing groups from the ND surface as the result of the hybrid synthesis.
authors: 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia.
authors: Yu V
authors: YV
authors: Fedoseeva
authors: 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia.
authors: L G
authors: LG
authors: Bulusheva
authors: 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia.
authors: A V
authors: AV
authors: Okotrub
authors: Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia.
authors: M A
authors: MA
authors: Kanygin
authors: Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia.
authors: D V
authors: DV
authors: Gorodetskiy
authors: 1] Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia [2] Novosibirsk State University, Novosibirsk 630090, Russia.
authors: I P
authors: IP
authors: Asanov
authors: Institute of Solid State Physics, Dresden University of Technology, D-01062 Dresden, Germany.
authors: D V
authors: DV
authors: Vyalikh
authors: Institute of Biophysics SB RAS, Krasnoyarsk 660036, Russia.
authors: A P
authors: AP
authors: Puzyr
authors: Institute of Biophysics SB RAS, Krasnoyarsk 660036, Russia.
authors: V S
authors: VS
authors: Bondar