@ARTICLE{Velardi2016,
author={Velardi, L. and Valentini, A. and Cicala, G.},
title={Highly efficient and stable ultraviolet photocathode based on nanodiamond particles},
journal={Applied Physics Letters},
year={2016},
volume={108},
number={8},
doi={10.1063/1.4942648},
art_number={083503},
note={cited By 15},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959420291&doi=10.1063%2f1.4942648&partnerID=40&md5=ed1286875b4bf0a52a31938efc960197},
abstract={Nanodiamond (ND) layers on silicon substrate are deposited by the pulsed spray technique starting from nanoparticles of about 250 nm dispersed in 1,2-dichloroethane solvent. The aim of this letter is to investigate the quantum efficiency (QE) of photocathodes based on ND particles in the vacuum ultraviolet spectral range. Various ND layers are examined employing as-received and hydrogenated nanoparticles. As expected, the hydrogen plasma treatment improves strongly the photoemission of the layer giving a QE of 22% at 146 nm. Indeed, this efficiency value is achieved only if the particles are treated in H2 microwave plasma before the growth of the sprayed layer rather than to hydrogenate the already formed one. These QE values are higher than those of photocathodes based on plasma chemical vapor deposition diamond films, but with the advantage of being much stable, too. The highest QE values are explained to be due to the intrinsic chemical and structural features of utilized ND particles. © 2016 AIP Publishing LLC.},
publisher={American Institute of Physics Inc.},
issn={00036951},
coden={APPLA},
document_type={Article},
source={Scopus},
}

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