02217nas a2200277   4500008004100000022001400041245009700055210006900152260007100221300001600292490000600308520122000314653001901534653000901553653003201562653002801594653001401622100002401636700002301660700002301683700002301706700002801729700002301757700002901780856013001809       2014                        eng d  a1944-824400aPulsed laser-deposited MoS2 thin films on W and Si: field emission and photoresponse studies0 aPulsed laserdeposited MoS2 thin films on W and Si field emission  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP  a15881-158880 v63 a<p>We report field electron emission investigations on pulsed laser-deposited molybdenum disulfide (MoS2) thin films on W-tip and Si substrates. In both cases, under the chosen growth conditions, the dry process of pulsed laser deposition (PLD) is seen to render a dense nanostructured morphology of MoS2, which is important for local electric field enhancement in field emission application. In the case of the MoS2 film on silicon (Si), the turn-on field required to draw an emission current density of 10 mu A/cm(2) is found to be 2.8 V/mu m. Interestingly, the MoS2 film on a tungsten (W) tip emitter delivers a large emission current density of similar to 30 mA/cm(2) at a relatively lower applied voltage of similar to 3.8 kV. Thus, the PLD-MoS2 can be utilized for various field emission-based applications. We also report our results of photodiode-like behavior in (n- and p- type) Si/PLDMoS2 heterostructures. Finally we show that MoS2 films deposited on flexible kapton substrate show a good photoresponse and recovery. Our investigations thus hold great promise for the development of PLD MoS2 films in application domains such as field emitters and heterostructures for novel nanoelectronic devices.</p>10afield emission10aMoS210aphotodiode heterostructures10apulsed laser deposition10athin film1 aLate, Dattatray, J.1 aShaikh, Parvez, A.1 aKhare, Ruchita, T.1 aKashid, Ranjit, V.1 aChaudhary, Minakshi, V.1 aMore, Mahendra, A.1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/pulsed-laser-deposited-mos2-thin-films-w-and-si-field-emission-and-photoresponse-studies-002027nas a2200229   4500008004100000245012300041210006900164260000800233300001600241490000600257520120000263100002201463700001701485700002301502700002301525700002101548700002201569700002401591700002501615700002501640856013201665       2016                        eng d00aPromising field electron emission performance of vertically aligned one dimensional (1D) brookite (beta) TiO2 nanorods0 aPromising field electron emission performance of vertically alig  cOCT  a98722-987290 v63 aWe evidence field-electron emission (FE) studies on the large-area array of one-dimensional (1D) brookite (beta) TiO2 nanorods. The pure 1D beta-TiO2 nanorods of 10 nm width and 760 nm long were synthesized on Si substrate utilizing hot-filament metal vapor deposition technique. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis evidenced the beta-TiO2 nanorods to be composed of orthorhombic crystals in brookite (beta) phase. X-ray photoemission spectroscopy (XPS) revealed the formation of pure stoichiometric (i.e. 1 : 1.98) 1D TiO2 nanorods. The values of turn-on field, required to draw current density of 10 mA cm(-2), was observed 3.9 V mu m(-1) for pristine 1D beta-TiO2 nanorods emitters, which were found significantly lower than doped/undoped 1D TiO2 nanostructures (i.e. nanotubes, nanowires, nanorods) based field emitters. The enhanced FE behavior of the TiO2/Si emitter can be attributed to modulation of electronic properties due to the high aspect ratio of vertically aligned TiO2 nanorods. Furthermore, the orthodox emission situation of pristine TiO2/Si emitters exhibit good emission stability and reveal their potentials as promising FE material.1 aDevan, Rupesh, S.1 aMa, Yuan-Ron1 aMore, Mahendra, A.1 aKhare, Ruchita, T.1 aAntad, Vivek, V.1 aPatil, Ranjit, A.1 aThakare, Vishal, P.1 aDhayal, Rajendra, S.1 aSchmidt-Mende, Lukas  uhttps://library.ncl.res.in/content/promising-field-electron-emission-performance-vertically-aligned-one-dimensional-1d-brookite