Nitrogenated　carbon　nanotips　(NCNTPs)　with　different　structures　were　synthesized　by　plasma-enhanced　hot　filament　chemical　vapor　deposition　under　different　time　using　methane,　nitrogen　and　hydrogen　as　the　reaction　gases.　The　results　of　field　emission　scanning　electron　microscopy,　micro-Raman　spectroscopy　and　X-ray　photoelectron　spectroscopy　indicate　that　the　NCNTPs　are　amorphous　structure　and　they　have　significant　changes　in　the　morphologies　and　components　with　the　growth　time.　The　electron　field　emission　(EFE)　from　NCNTPs　was　measured　and　the　results　show　that　the　current　density　increases　from　about　200　to　2800　mu　A/cm(2)　at　the　field　of　12　V/mu　m　depending　on　their　structures　and　components.　According　to　the　growth　conditions,　the　characterization　results　and　the　electronic　structure　of　amorphous　carbon,　the　changes　in　the　structures,　components　and　work　function　of　NCNTPs　were　analyzed.　Combined　the　work　function　with　the　characterization　results,　the　EFE　properties　of　NCNTPs　were　studied.　(C)　2012　Elsevier　Ltd.　All　rights　reserved.