Raman scattering, far infrared spectrum of BiI3 nanocrystallites

The optical properties of BiI3 nanocrystallites have been investigated by Raman scattering, far infrared spectrum and UV–vis absorption at room temperature. The Raman and far infrared spectrum of the BiI3 nanocrystallites have a shift in comparison with that of the BiI3 single crystals. The shift is...

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Veröffentlicht in:	Materials letters 2003-04, Vol.57 (15), p.2185-2188
Hauptverfasser:	Yang, Yijun, Wang, Chunrui, Hou, Junqing, Dai, Jianming
Format:	Artikel
Sprache:	eng
Schlagworte:	Bismuth tri-iodide Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Nanocrystals and nanoparticles Nanomaterials Optical properties Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics Raman spectrum Wide band gap
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Zusammenfassung:	The optical properties of BiI3 nanocrystallites have been investigated by Raman scattering, far infrared spectrum and UV–vis absorption at room temperature. The Raman and far infrared spectrum of the BiI3 nanocrystallites have a shift in comparison with that of the BiI3 single crystals. The shift is mainly attributed to nanosize effect. The first exciton peak of BiI3 nanocrystallites is a slight blue shift in comparison with the band gap of the bulk materials.
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(02)01171-0