02012nas a2200277   4500008004100000022001400041245012300055210006900178260010600247300001400353490000700367520099000374653002801364653002301392653002401415653001901439653002301458100002501481700002101506700001401527700001701541700001601558700001401574700002701588856011901615       2005                        eng d  a0025-540800aGrowth of PbS nanopyramidal particulate films for potential applications in quantum-dot photovoltaics and nanoantennas0 aGrowth of PbS nanopyramidal particulate films for potential appl  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAUG  a1353-13600 v403 a<p>We report a simple interfacial process called the liquid-liquid interface reaction technique (LLIRT) that leads to the formation of nanosized PbS particulate films with hitherto unreported pyramidal morphology. The resultant PbS films were characterized by transmission electron microscopy (TEM) with selected area electron diffraction (SAED), X-ray diffractometery (XRD), atomic force microscopy (AFM), near field scanning optical microscopy (NSOM) and UV-vis spectroscopy. The pyramidal morphology is speculated to originate from the preferred orientation of the 2 2 0 plane of cubic PbS. Our nanopyramidal PbS particulate films display remarkably sharp excitonic peak centered around 656 nm that accounts for a band gap of 1.8 eV suggesting, in turn, their potential application in QD photovoltaics. Interestingly, the feasibility of such nanopyramids to potentially act as nanoantennas (as revealed by the NSOM) is also suggested. (c) 2005 Elsevier Ltd. All rights reserved.</p>10aAtomic force microscopy10aChemical synthesis10aElectron microscopy10aNanostructures10aOptical properties1 aHawaldar, Ranjit, R.1 aMulik, Uttam, P.1 aPatil, K.1 aPasricha, R.1 aSathaye, S.1 aLewis, A.1 aAmalnerkar, Dinesh, P.  uhttps://library.ncl.res.in/content/growth-pbs-nanopyramidal-particulate-films-potential-applications-quantum-dot-001540nas a2200253   4500008004100000022001400041245007600055210006900131260006900200300001200269490000700281520069100288653002800979653001601007653001901023653000801042100002501050700001901075700001801094700002001112700002101132700002701153856010601180       2005                        eng d  a0254-058400aSelf-assembly of nanostructured PbS for solar photovoltaic applications0 aSelfassembly of nanostructured PbS for solar photovoltaic applic  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJUN  a447-4530 v913 a<p>In the present communication, the self-assembly of nanocrystalline PbS at the liquid-liquid interface is reported. The PbS nanocrystals were, subsequently, transformed in the form of thin films by dip coating. The resultant Q-PbS films were characterized by SEM-EDAX, TEM-SAED, XRD, XPS and UV-vis Spectroscopy. Pyramidal features at the nanometer scale, preferred orientation along (2 2 0) and (4 0 0) planes of cubic structure and a sharp excitonic peak at 656 run are the salient aspects of this work. The band-gap of the order of 1.8 eV (associated with the excitonic feature) is ideally suited for solar photovoltaic applications. (c) 2004 Elsevier B.V. All rights reserved.</p>10aLiquid-liquid interface10ananopyramid10aNanostructures10aPbS1 aHawaldar, Ranjit, R.1 aKanade, K., G.1 aPatil, K., R.1 aSathaye, S., D.1 aMulik, Uttam, P.1 aAmalnerkar, Dinesh, P.  uhttps://library.ncl.res.in/content/self-assembly-nanostructured-pbs-solar-photovoltaic-applications-0