02264nas a2200277   4500008004100000022001400041245008700055210006900142260011000211300001400321490000600335520127700341100002401618700002001642700001701662700001801679700002801697700001901725700001801744700001601762700001801778700002301796700002401819700002201843856012101865       2016                        eng d  a2046-206900aField emission properties of highly ordered low-aspect ratio carbon nanocup arrays0 aField emission properties of highly ordered lowaspect ratio carb  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a9932-99390 v63 a<p>Herein, we design and develop a field emission device utilizing highly porous carbon nanocup (CNC) films. These three-dimensional (3D) low-aspect ratio CNC structures were fabricated by a combination of anodization and chemical vapor deposition techniques. The low turn-on fields of 2.30 V mu m(-1) were observed to draw an emission current density of 1 mu A cm(-2) and a maximum emission current density of similar to 1.802 mA cm(-2) drawn at an applied field of similar to 4.20 V mu m(-1). The enhanced field emission behavior observed from the CNC films is attributed to an excellent field enhancement factor of 1645. The observed field emission properties of CNC arrays are attributed to a synergistic combination of high aspect ratio, nano-sized radius of curvature, highly organized distribution of the emitters over the whole area of specimen and lower screening effect of the CNC arrays. These observations shed light on the effect of the stacking carbon layers of CNC on their electronic properties and open up possibilities to integrate new morphologies of graphitic carbon in nanotechnology applications. Thus, the low turn on field, high emission current density and better emission current stability enable CNC based future field emission applications.</p>1 aGupta, Bipin, Kumar1 aKedawat, Garima1 aKumar, Pawan1 aSingh, Satbir1 aSuryawanshi, Sachin, R.1 aAgrawal, Neetu1 aGupta, Govind1 aKim, Ah, Ra1 aGupta, R., K.1 aMore, Mahendra, A.1 aLate, Dattatray, J.1 aHahm, Myung, Gwan  uhttps://library.ncl.res.in/content/field-emission-properties-highly-ordered-low-aspect-ratio-carbon-nanocup-arrays-0