Solid-to-solid phase transformations of nanostructured selenium-tin thin films induced by thermal annealing in oxygen atmosphere

Journal Article · Thu Jun 19 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4883039· OSTI ID:22311372

Serra, A. ^[1]; Rossi, M. ^[2]; Buccolieri, A.; Manno, D. ^[3]

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1. Physics Applied to Material Science interdepartmental Laboratory (PAMS-Lab) - Dipartimento di Beni Culturali - Università del Salento - Lecce (Italy)
2. Dipartimento Scienze di Base ed Applicate all'Ingegneria, and CNIS - Sapienza Università di Roma, Roma (Italy)
3. Physics Applied to Material Science interdepartmental Laboratory (PAMS-Lab) - Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali - Università del Salento - Lecce (Italy)

The structural and morphological evolution of nanostructured thin films obtained from thermal evaporation of polycrystalline Sn-Se starting charge as a function of the subsequent annealing temperature in an oxygen flow has been analysed. High-resolution transmission electron microscopy, small area electron diffraction, digital image processing, x-ray diffraction and Raman spectroscopy have been employed in order to investigate the structure and the morphology of the obtained films. The results evidenced, in the temperature range from RT to 500°C, the transition of the material from a homogeneous mixture of SnSe and SnSe{sub 2} nanocrystals, towards a homogeneous mixture of SnO{sub 2} and SeO{sub 2} nanocrystals, with an intermediate stage in which only SnSe{sub 2} nanocrystals are present.

• OSTI ID: 22311372
• Journal Information: AIP Conference Proceedings, Vol. 1603, Issue 1; Conference: Nanoforum 2013, Rome (Italy), 18-20 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ELECTRON DIFFRACTION
EVAPORATION
HOMOGENEOUS MIXTURES
IMAGE PROCESSING
MORPHOLOGY
NANOSTRUCTURES
OXYGEN
POLYCRYSTALS
RAMAN SPECTROSCOPY
SELENIUM
SELENIUM OXIDES
THIN FILMS
TIN
TIN OXIDES
TIN SELENIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION