01590nas a2200169   4500008004100000245005100041210005000092260000800142300001400150490000600164520107600170100002401246700002501270700002301295700002401318856007801342       2017                        eng d00aPbS nanostar-like structures as field emitters0 aPbS nanostarlike structures as field emitters  cJUL  a5175-51790 v23 a<p>The crystalline PbS nanostars were synthesized by thermal decomposition of thioacetamide (TAA) in aqueous solutions of lead acetate and acetic acid at 80 8 degrees C. The structure and morphology of the PbS nanostars have been characterized using X-Ray Diffraction (XRD), Raman Spectroscopy, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The optical properties of the PbS nanostars have been studied using UV-Visible absorption Spectroscopy (UVVis). The field emission investigations have been carried out on the as synthesized PbS nanostars at the base pressure of similar to 13 10(-8) mbar. The turn on field required to draw an emission current density of 1 mu A/cm(2) is found to be 1.8 V/mm. The emission current-time plots show good emission current stability of the PbS nanostar emitter over a period of 4 hrs. The results in terms of low turn-on field and long term emission current stability of the PbS nanostars emitter reveals that it can be used in field emission based vacuum microelectronics / nanoelectronic devices.</p>1 aPawar, Mahendra, S.1 aBankar, Prashant, K.1 aMore, Mahendra, A.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/pbs-nanostar-structures-field-emitters