01165nas a2200181   4500008004100000022001400041245017800055210007900233260000800312300001400320490000600334520040500340100001900745700002000764700001700784700001400801856016800815       2014                        eng d  a2040-337200aBack-to-back MOS–Schottky (Pt–SiO2–Si–C–Pt) nano-heterojunction device as an efficient self-powered photodetector: one step fabrication by pulsed laser deposition 0 aBacktoback MOS–Schottky Pt–SiO2–Si–C–Pt nanoheterojunction devic  cJAN  a3550-35560 v63 aAn efficient self-powered photodetector design involving a C–Si hetero-interface with back-to-back MOS–Schottky (Pt–SiO2–Si–C–Pt) device action is presented. Pulsed laser deposition of a carbon thin film is used which dynamically removes the native surface oxide to form the desired Schottky interface. The combined device action yields two orders of magnitude photoresponse at zero bias.1 aShaikh, P., A.1 aThakare, V., P.1 aLate, D., J.1 aOgale, S.  uhttps://library.ncl.res.in/content/back-back-mos%E2%80%93schottky-pt%E2%80%93sio2%E2%80%93si%E2%80%93c%E2%80%93pt-nano-heterojunction-device-efficient-self-powered01231nas a2200169   4500008004100000245005200041210005200093260000800145300001400153490000700167520072600174100001700900700002100917700001900938700001700957856008700974       2016                        eng d00aAtomically thin WS2 nanosheets based gas sensor0 aAtomically thin WS2 nanosheets based gas sensor  cDEC  a1249-12540 v143 aWe report here the UV light and NO2 gas sensing properties of atomically thin few-layered WS2 nanosheets synthesized by a simple hydrothermal method. For the UV sensor, the response time was observed to be <15 s whereas the recovery time was <56 s. The Few layered WS2 nanosheets sensor devices were also tested for different concentration of NO2 gas at room temperature and 100 °C. The response time was observed to be <60 s whereas recovery time was >10 min. Further, the response and recovery time can be shortened by UV illumination or by removing the absorbed gas by heating the device at higher temperature. Our results open up the new avenues for gas sensors based on two-dimensional inorganic layered materials. 1 aLate, D., J.1 aKanawade, R., V.1 aKannan, P., K.1 aRout, C., S.  uhttps://library.ncl.res.in/content/atomically-thin-ws2-nanosheets-based-gas-sensor02150nas a2200205   4500008004100000020002200041245013100063210006900194260023600263520118000499653001901679653000901698653001601707653001001723100002201733700002401755700001901779700001701798856012901815       2016                        eng d  a978-1-5090-2419-300aField emission investigation of composites of polypyrrole with graphene oxide, reduced graphene oxide and graphene nanoribbons0 aField emission investigation of composites of polypyrrole with g  a345 E 47th St, New York,NY 10017 USAbIEEE; IEEE Electron Devices Soc; ZEISS; Modern Electron; Amer Vacuum Soci; Paul Scherrer Inst; Elect & Comp Engn; Univ British Columbia, Peter Wall Inst Adv Studies; Dept Elect & Comp EngncJUL3 a<p>The monomer pyrrole has been polymerized by chemical route in the presence of graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoribbons (GNR) separately to prepare nanocomposites as Polypyrrole-GO (PGO), PPy-rGO (PRGO), PPy-GNR (PGNR), respectively. The morphological, chemical and structural characterization of the as-synthesized products was carried out using scanning electron microscopy (SEM), Raman and fourier transform infrared (FTIR) spectroscopy. Field emission (FE) studies of PGO, PRGO, PGNR emitters were performed at the base pressure of 1x10(-8) mbar in planar `diode' configuration. Onset and threshold field values corresponding to emission current densities of 1 and 100 mu A/cm(2) are observed to be 1.5 and 2.3V/mu m for PGO, 1.4 and 2.2 V/mu m for PRGO and lowest for PGNR as 0.9 and 1.2V/mu m, respectively. The maximum emission current density of 2.5 mA/cm(2) drawn for PGO at the applied electric field of 3.2V/mu m, 1.2 mA/cm(2) at 3.6V/mu m from the PRGO and 8 mA/cm(2) at the field of 2.2 V/mu m from the PGNR emitters. An emission current versus time (I-t) plot shows stable emission behavior for the preset current values.</p>10afield emission10aFTIR10apolypyrrole10aRaman1 aHarpale, Kashmira1 aBansode, Sanjeewani1 aMore, Mahendra1 aLate, D., J.  uhttps://library.ncl.res.in/content/field-emission-investigation-composites-polypyrrole-graphene-oxide-reduced-graphene-oxide01471nas a2200169   4500008004100000245012400041210006900165260000800234300001200242490000800254520084800262100001401110700001501124700001701139700001701156856012801173       2017                        eng d00aElectrodeposited nickel cobalt manganese based mixed sulfide nanosheets for high performance supercapacitor application0 aElectrodeposited nickel cobalt manganese based mixed sulfide nan  cMAY  a101-1080 v2443 aPorous multi component Nickel Cobalt Manganese Sulfide (NCMS) nanosheets have been grown on Ni foam by cathodic electrodeposition method. The as-prepared NCMS nanosheets sample is used as an electrode material for supercapacitor application due to its large electrochemically active surface and high porosity structure. Moreover, NCMS nanosheets have good electrical and mechanical connections to the conductive Ni foam to achieve enhanced reaction kinetics with improved electrode integrity. The NCMS nanosheets exhibit an ultrahigh specific capacitance of 2717 Fig at a current density of 1 Aug with excellent cyclic stability and energy density of 94.07 Wh/kg. The electrodeposited NCMS nanosheets with extraordinary electrochemical performance enable the novel electrodes to hold great potential for high efficient energy storage systems. 1 aSahoo, S.1 aMondal, R.1 aLate, D., J.1 aRout, C., S.  uhttps://library.ncl.res.in/content/electrodeposited-nickel-cobalt-manganese-based-mixed-sulfide-nanosheets-high-performance01616nas a2200229   4500008004100000245009200041210006900133260000800202300001200210490000800222520089800230653002201128653001901150653001501169653001101184100001901195700001401214700001601228700001701244700001701261856010801278       2017                        eng d00aEnhanced field emission performance of NiMoO<inf>4</inf> nanosheets by tuning the phase0 aEnhanced field emission performance of NiMoOinf4inf nanosheets b  cOCT  a270-2740 v4183 aIn this paper we report, large scale synthesis of α and β-NiMoO4 by a facile hydrothermal method and we observed that urea plays important role on the growth of β-NiMoO4 nanosheets. We have also carried out field emission (FE) investigations of α and β-NiMoO4 at a base pressure of ∼1 × 10−8 mbar. The obtained turn-on field at emission current density of 1 μA/cm2 for β-NiMoO4 nanosheets and α −NiMoO4 is 1.3 V/μm and 2.2 V/μm respectively were observed. The maximum field emission current density of 1.006 mA/cm2at an applied electric field of 2.7 V/μm was achieved for β-NiMoO4 nanosheets. Furthermore, we found that the β-NiMoO4 nanosheets possess good field emission performance compared to α-NiMoO4. The results indicate that NiMoO4can be used as a promising material in FE applications with possibility of tuning field emission performance by controlling the phase.10aCurrent stability10afield emission10ananosheets10aNiMoO41 aBankar, P., K.1 aRatha, S.1 aMore, M., A1 aLate, D., J.1 aRout, C., S.  uhttps://library.ncl.res.in/content/enhanced-field-emission-performance-nimoo4-nanosheets-tuning-phase-001905nas a2200229   4500008004100000245012800041210006900169260000800238300001200246490000800258520111200266100001801378700001801396700001901414700001801433700001901451700001801470700001701488700002401505700001801529856012801547       2019                        eng d00aEnhanced energy density and stability of self-assembled cauliflower of Pd doped monoclinic WO3 nanostructure supercapacitor0 aEnhanced energy density and stability of selfassembled cauliflow  cMAR  a192-1990 v2253 aEnhanced electrochemical performance of WO3 nanostructures by engineering their morphology, structural and surface defect at nanoscale is feasible. Herein we report the effect of Pd doping on the morphological and electrochemical properties of WO3 at nanoscale prepared by a simple hydrothermal method. The synthesized pristine WO3 (cabbage like morphology) and Pd doped WO3 (cauliflower like morphology) are examined by using XRD, XPS, Raman spectra, BET, FE-SEM, TEM. The morphological investigation shows the effective rebuilding of nanosheets assembled cabbage shaped pristine WO3 into nanobricks assembled cauliflower shaped Pd doped WO3 with improvement in crystallinity, surface area and conductivity. As a result, the enhancement in the electrochemical performance of cauliflower shaped Pd-WO3 is recorded four times higher specific capacitance than pristine WO3. Additionally, the excellent cyclic stability (almost ten times higher than pristine WO3) up to 1100 cycles with nearly 86.95% capacity retention is observed in Pd-WO3 attributed to Pd content and highly modified structural arrangement.1 aGupta, S., P.1 aPatil, V., B.1 aTarwal, N., L.1 aBhame, S., D.1 aGosavi, S., W.1 aMulla, I., S.1 aLate, D., J.1 aSuryavanshi, S., S.1 aWalke, P., S.  uhttps://library.ncl.res.in/content/enhanced-energy-density-and-stability-self-assembled-cauliflower-pd-doped-monoclinic-wo302068nas a2200301   4500008004100000022001100041245008100052210006900133260000800202300001200210490000800222520116200230653002101392653001701413653003001430653001901460653002401479653001801503100001401521700001501535700001901550700001701569700001701586700001801603700001901621700001701640856010901657       2019                        eng d  a22369700aVSe2-reduced graphene oxide as efficient cathode material for field emission0 aVSe2reduced graphene oxide as efficient cathode material for fie  cMAY  a384-3900 v1283 a<p>Field emission properties of pristine VSe2 and its hybrid with reduced graphene oxide (RGO) have been investigated in detail. Promising field emission performance were noted with lower values of turn-on and threshold fields of ∼1.3 V μm−1 and 2.12 V μm−1 respectively for the VSe2/RGO hybrid which is much more superior than that of pristine VSe2 emitter and other 2D materials. Density Functional Theory (DFT) simulations have also been performed to qualitatively support our experimental observations through demonstration of Density of States and computation of work function for pristine VSe2 and hybrid VSe2/RGO. The lowering of work function and appearance of additional states near Fermi level from carbon p orbital of RGO is responsible for superior field emission characteristics in hybrid VSe2/RGO compared to pristine VSe2 which supports our experimental observations. Our experimental data and theoretical insight from electronic structure simulations strongly infer that the synthesized hybrid VSe2/RGO has the potential to be tailored as efficient and high performance cathode material in field emission based devices.</p>
10acathode material10aChalcogenide10aDensity functional theory10afield emission10aVanadium diselenide10aWork function1 aRatha, S.1 aBankar, P.1 aGangan, A., S.1 aMore, M., A.1 aLate, D., J.1 aBehra, J., N.1 aChkraborty, B.1 aRout, C., S.  uhttps://library.ncl.res.in/content/vse2-reduced-graphene-oxide-efficient-cathode-material-field-emission