NDLI: Nanoparticles for nucleation of heavy metal iodide films: Mercuric iodide and bismuth tri-iodide cases

Content Provider	IEEE Xplore Digital Library
Author	Fornaro, L. Aguiar, I. Perez, M.E. Pereira, H.B.
Copyright Year	2010
Description	Author affiliation: Compound Semiconductors Group, Facultad de Química, Universidad de la República, Montevideo, Uruguay (Aguiar, I.; Perez, M.E.; Pereira, H.B.) \|\| Compound Semiconductors Group, CURE, Universidad de la República, Rocha, Uruguay (Fornaro, L.)
Abstract	Mercuric iodide and bismuth tri-iodide nanoparticles were synthesized by suspension in octadecene, from Hg(NO. HO and I, and from Bi(NO. 5HO and I, respectively. The best synthesis conditions were 2 hrs. at 60–70 ºC, followed by 10 min. at 95–110 ºC for mercuric iodide nanoparticles, and 4 hrs. at 80–110 ºC, followed by 10 min. at 180–210 ºC for bismuth tri-iodide ones. Nanoparticles were then washed and centrifugated with ether repeatedly. Compounds identity was confirmed by X-ray diffraction (XRD) and energy dispersive spectrometry (EDS). Nanoparticles were characterized by transmission (TEM) and scanning (SEM) electron microscopy. Disk-like and squared mercuric iodide nanostructures were obtained, 80–140 nm and 100–125 nm in size respectively. Rounded and rod-like bismuth tri-iodide nanoparticles, 30–500 nm in size were obtained. Acetonitrile and isopropanol suspensions of mercuric iodide nanoparticles, and acetonitrile suspension of bismuth tri-iodide nanoparticles exhibited peak maxima shifts in their UV-Vis spectra, as was reported for nanoparticles of other materials. It is the first time that mercuric iodide and bismuth tri-iodide nanoparticles are synthesized by the suspension method, although uniform shape and size distributions have not yet been obtained. They offer interesting perspectives for crystalline film nucleation, for improving current applications of these materials, as far as for opening new ones.
Starting Page	3923
Ending Page	3926
File Size	676962
Page Count	4
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874550
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanoparticles Bismuth Films Suspensions Compounds Scanning electron microscopy
Content Type	Text
Resource Type	Article

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