02067nas a2200253   4500008004100000022001400041245013000055210006900185260010600254300001400360490000700374520107300381653002501454653001301479653001901492653002801511653004301539100001601582700002201598700001701620700003001637700002001667856012601687       2008                        eng d  a1359-645400aEffect of fuel and its concentration on the nature of Mn in Mn/CeO2 solid solutions prepared by solution combustion synthesis0 aEffect of fuel and its concentration on the nature of Mn in MnCe  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a1461-14720 v563 a<p>Nano and microcrystalline, Mn/CeO2 solid solutions (5 mol.% Mn) have been prepared by solution combustion synthesis using urea, glycine or polyethylene glycol (PEG) as fuel. The nature of the fuel and its concentration (fuel to metal mole ratio, F/M have a strong influence on the physical and chemical characteristics of the resulting Mn/CeO2 solid solutions. The variations in the physicochemical properties are attributed to differences in (i) the adiabatic/real flame temperature realized with these fuels at different F/M ratios; (ii) the sustenance of the temperature or the quenching effect of the fuel at higher F/M ratios; (iii) combustion or decomposition of the precursors as the main course of the reaction; and (iv) the generation of gaseous products during combustion. Since the addition of the fuel to the initial precursor solution does not change the pH of the medium, the differences in the type of Mn species formed are mainly attributed to the combustion process. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.</p>10aCombustion synthesis10aMn-ceria10aNanocomposites10aX-ray diffraction (XRD)10aX-ray photoelectron spectroscopy (XPS)1 aMurugan, B.1 aRamaswamy, A., V.1 aSrinivas, D.1 aGopinath, Chinnakonda, S.1 aRamaswamy, Veda  uhttps://library.ncl.res.in/content/effect-fuel-and-its-concentration-nature-mn-mnceo2-solid-solutions-prepared-solution-001687nas a2200253   4500008004100000022001400041245014600055210006900201260000800270300001200278490000700290520080300297653001901100653001501119653002401134653001601158653002501174653002801199100001801227700002701245700001601272700002601288856011901314       2023                        eng d  a2159-685900aUnleashing methylammonium-guanidinium lead iodide hybrid perovskite spherulitic microstructures: a structural and morphological investigation0 aUnleashing methylammoniumguanidinium lead iodide hybrid perovski  cJUN  a406-4150 v133 a<p>
	Perovskites can offer an attractive replacement option for existing commercial solar technologies. Herein microstructure plays an important role in improving the efficiency and stability of solar cells. Previously unidentified spherulitic microstructures of self-assembled polycrystalline perovskites are explored in this report. For this an intermediate phase of a promising guanidinium (GUAI)-rich perovskite has been investigated for its structural and morphological properties. This study infuses new insight into the evolution of perovskite microstructure from heterogeneity to homogeneity, as a result unravels the structure of perovskite embryonic spherulites, lamellar arrangements, transcrystalline nature, novel spherulites bridging, hole nucleation, impingement, and defects.</p>
10aMicrostructure10aMorphology10aNucleation & growth10aPerovskites10aPhase transformation10aX-ray diffraction (XRD)1 aMukul, Monika1 aKaliaperumal, Selvaraj1 aRani, Mamta1 aTripathi, Surya, Kant  uhttps://library.ncl.res.in/content/unleashing-methylammonium-guanidinium-lead-iodide-hybrid-perovskite-spherulitic