01718nas a2200301 4500008004100000020002200041022001400063245006700077210006600144260019300210520062500403653002201028653001901050653001401069653001901083100002501102700002301127700002001150700002401170700002201194700001601216700001701232700001701249700001801266700001701284700001501301856010001316 2014 eng d a978-1-4799-5306-6 a2164-237000aPhoto-enhanced field emission studies of tapered CdS nanobelts0 aPhotoenhanced field emission studies of tapered CdS nanobelts a345 E 47th St, New York, NY 10017 USAbPaul Scherrer Inst; EMPA, Mat Sci & Technol; Swiss Nanoscience Inst; Appl MicroSWISS; Amer Elements; Amer Vacuum Soc; IEEE, Electron Devices SoccJUL3 a

Field emission and photo-enhanced field emission characteristics of single crystalline tapered CdS nanobelts have been investigated. The turn-on field for the emission current density of similar to 0.1 mu A/cm(2) is found to be similar to 2.1 V/mu m, which is much lower than reported values for various CdS nanostructures. The photo-enhanced field emission current shows a reproducible photo-switching behavior with rise in current level nearly four times that of its initial preset value (similar to 1 mu A) which is found to be very remarkable. Possible mechanism of photo-enhanced field emission is discussed.

10aCurrent stability10afield emission10aNanobelts10aPhotoswitching1 aChavan, Padmakar, G.1 aMore, Mahendra, A.1 aJoag, Dilip, S.1 aBadadhe, Satish, S.1 aMulla, Imtiaz, S.1 aTsujino, S.1 aGobrecht, J.1 aParaliev, M.1 aBraun, H., H.1 aGroening, O.1 aFeurer, T. uhttp://library.ncl.res.in/content/photo-enhanced-field-emission-studies-tapered-cds-nanobelts-002793nas a2200265 4500008004100000020002200041245011500063210006900178260019300247520172400440653001902164653002102183653001902204100002602223700002002249700002702269700002402296700001502320700001602335700001602351700001402367700001602381700001402397856011602411 2014 eng d a978-1-4799-5306-600aPhotosensitive field emission study of SnS2 nanosheets (27th International Vacuum Nanoelectronics Conference )0 aPhotosensitive field emission study of SnS2 nanosheets 27th Inte a345 E 47TH ST, NEW YORK, NY 10017 USAbPaul Scherrer Inst; EMPA, Mat Sci & Technol; Swiss Nanoscience Inst; Appl MicroSWISS; Amer Elements; Amer Vacuum Soc; IEEE, Electron Devices SoccJUL3 a

SnS2 nanosheets (SnS(2)NSs), synthesized by one-step hydrothermal reaction, are subjected to Field Emission (FE) studies. For synthesis, specific concentrations of Na2SnO3 and thioamide solution are used. The FE study is carried out in all metal Ultra High Vacuum (UHV) chamber in planar diode configuration at a base pressure of similar to 10(-8) torr. A maximum current density of 110 mu A/cm(2) was attainable. The turn on field required to draw a current density of 1 mu A/cm(2) is found to be 2.6 V/mu m. A separate study was carried out to investigate the photosensitivity of the emitter by illuminating the specimen under visible light. In dark, the FN plot is non-linear, indicative of semiconductor nature of the emitter. However, on illumination, the FN plot is observed to be linear. This remarkable change can be explained by the photoconductivity imparted on illumination. The field at the tip is high in presence of light, than in dark, due to enhanced conductivity. It is also observed that on switching ON the light, the FE current increases almost instantaneously. Repetitive switching is observed at a fixed applied voltage, generating current pulses. The visible light soaking of the sample is carried out by illuminating the lamp for more than 100 minutes, where the current seems to saturate. On switching off the lamp the emission current decayed almost to its initial value exponentially. The photosensitivity has been studied for different wavelengths in the visible spectra. The maximum photosensitive field emission is observed for green filter. With this photoresponse, it is envisaged that SnS2 nanosheets are a potential candidate for optoelectronic applications of field emitters.

10afield emission10aphotosensitivity10aPhotoswitching1 aJoshi, Padmashree, D.1 aJoag, Dilip, S.1 aRout, Chandra, Shekhar1 aLate, Dattatray, J.1 aTsujino, S1 aGobrecht, J1 aParaliev, M1 aBraun, HH1 aGroening, O1 aFeurer, T uhttp://library.ncl.res.in/content/photosensitive-field-emission-study-sns2-nanosheets-27th-international-vacuum01871nas a2200181 4500008004100000022001400041245005900055210005900114260009900173300002700272490000700299520119400306100002601500700002001526700002701546700002401573856009201597 2015 eng d a1071-102300aPhotosensitive field emission study of SnS2 nanosheets0 aPhotosensitive field emission study of SnS2 nanosheets aSTE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USAbA V S AMER INST PHYSICScMAY aArticle Number: 03C1060 v333 a

SnS2 nanosheets (SnS(2)NSs), synthesized by one-step hydrothermal reaction, are subjected to field emission (FE) studies. For synthesis, specific concentrations of Na2SnO3 and thioamide solutions are used. The FE study is carried out in a planar diode configuration at a base pressure of similar to 10(-8) mbar. The emission photosensitivity is also investigated by illuminating the specimen with a visible light source. In dark, the turn on field, the electric field required to obtain a current density of 1 mu A/cm(2), is found to be 5.9 V/mu m. Upon illumination, the emitter with visible light, it is found to reduce to 5.0 V/mu m. A significant change in the nature of the Fowler-Nordheim plot with light illumination is also observed and has been explained on the basis of photoconductivity. Repetitive switching ON and OFF the light source, at a fixed applied voltage, is found to generate current pulses. The photosensitivity is also studied with various color filters. With the photoswitching and the enhanced field emission properties, it is envisaged that SnS(2)NSs possess a potential for optoelectronic applications of field emitters. (C) 2014 American Vacuum Society.

1 aJoshi, Padmashree, D.1 aJoag, Dilip, S.1 aRout, Chandra, Shekhar1 aLate, Dattatray, J. uhttp://library.ncl.res.in/content/photosensitive-field-emission-study-sns2-nanosheets-2