DOI: 10.1063/1.1370991. Strong visible photoluminescence from SiO2 nanotubes at room temperature

Strong visible photoluminescence from SiO2 nanotubes at room temperature

10.1063/1.1370991

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

The optical studies of SiO2 mesoporous materials with hierarchical tubules-within-tubule structure have been investigated by photoluminescence and Fourier-transform infrared transmittance (FTIR). Our results suggest that the radiative intensity can be strongly enhanced by annealing the samples in N2 environment. From the FTIR spectra, we have pointed out that the origin responsible for the strong emission is Si–OH complexes located on nanotube surface. It has been observed that after turning off the pumping laser, the photoluminescence signal of SiO2 nanotubes can persist for several seconds, which is much longer than that of most materials performed under similar conditions. We have found that the decay of the photoluminescence signal is due to the quantum tunneling process. These are triplet and singlet states of Si–OH complexes that are responsible for the observed persistent photoluminescence.

Bibliography

Chang, H. J., Chen, Y. F., Lin, H. P., & Mou, C. Y. (2001). Strong visible photoluminescence from SiO2 nanotubes at room temperature. Applied Physics Letters, 78(24), 3791â3793.

Authors 4

H. J. Chang (first)
Y. F. Chen (additional)
H. P. Lin (additional)
C. Y. Mou (additional)

References 17 Referenced 75

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 10:17 a.m.)
Deposited	1 year, 7 months ago (Feb. 3, 2024, 3:16 p.m.)
Indexed	1 year, 4 months ago (April 5, 2024, 8:52 a.m.)
Issued	24 years, 2 months ago (June 11, 2001)
Published	24 years, 2 months ago (June 11, 2001)
Published Print	24 years, 2 months ago (June 11, 2001)

Funders 0

None

BibTeX

@article{Chang_2001, title={Strong visible photoluminescence from SiO2 nanotubes at room temperature}, volume={78}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1370991}, DOI={10.1063/1.1370991}, number={24}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Chang, H. J. and Chen, Y. F. and Lin, H. P. and Mou, C. Y.}, year={2001}, month=jun, pages={3791–3793} }

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