DOI: 10.1063/1.2885060. Cathodoluminescence defect characterization of hydrothermally grown SnO2 nanoparticles

Cathodoluminescence defect characterization of hydrothermally grown SnO2 nanoparticles

10.1063/1.2885060

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Sn O 2 nanoparticles in the 50–150nm size range were grown by a low temperature hydrothermal process, using SnCl4⋅5H2O as precursor and CH3(CH2)15N(Br)(CH3)3 as stabilizing agent. The as-grown samples were mostly amorphous and their crystallinity improved either by prolonged hydrothermal process or by air annealing at high temperatures. The absence of near-band-edge emission and appearance of a broad visible emission related mainly to oxygen vacancies and crystalline defects were the main characteristics of their room temperature cathodoluminescence (CL) spectra. A luminescent band in the 1.79–1.83eV spectral region was also detected. The intensity of the defect bands reduces both on prolonged hydrothermal treatment and air annealing at high temperatures, indicating a net decrease of defect content on thermal treatments. Panchromatic CL images revealed that most of the defect emissions come from smaller SnO2 nanoparticles.

Bibliography

Pal, U., PÃ©rez-Centeno, A., & Herrera-ZaldÃvar, M. (2008). Cathodoluminescence defect characterization of hydrothermally grown SnO2 nanoparticles. Journal of Applied Physics, 103(6).

Authors 3

U. Pal (first)
A. Pérez-Centeno (additional)
M. Herrera-Zaldívar (additional)

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Dates

Type	When
Created	17 years, 5 months ago (March 17, 2008, 6:45 p.m.)
Deposited	2 years, 2 months ago (June 30, 2023, 3 p.m.)
Indexed	1 month ago (July 30, 2025, 6:50 a.m.)
Issued	17 years, 5 months ago (March 15, 2008)
Published	17 years, 5 months ago (March 15, 2008)
Published Online	17 years, 5 months ago (March 17, 2008)
Published Print	17 years, 5 months ago (March 15, 2008)

Funders 0

None

BibTeX

@article{Pal_2008, title={Cathodoluminescence defect characterization of hydrothermally grown SnO2 nanoparticles}, volume={103}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.2885060}, DOI={10.1063/1.2885060}, number={6}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Pal, U. and Pérez-Centeno, A. and Herrera-Zaldívar, M.}, year={2008}, month=mar }

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  "abstract": "<jats:p>Sn O 2 nanoparticles in the 50\u2013150nm size range were grown by a low temperature hydrothermal process, using SnCl4\u22c55H2O as precursor and CH3(CH2)15N(Br)(CH3)3 as stabilizing agent. The as-grown samples were mostly amorphous and their crystallinity improved either by prolonged hydrothermal process or by air annealing at high temperatures. The absence of near-band-edge emission and appearance of a broad visible emission related mainly to oxygen vacancies and crystalline defects were the main characteristics of their room temperature cathodoluminescence (CL) spectra. A luminescent band in the 1.79\u20131.83eV spectral region was also detected. The intensity of the defect bands reduces both on prolonged hydrothermal treatment and air annealing at high temperatures, indicating a net decrease of defect content on thermal treatments. Panchromatic CL images revealed that most of the defect emissions come from smaller SnO2 nanoparticles.</jats:p>",
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