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Composition and Morphology of Luminescent Porous Si

Published online by Cambridge University Press:  15 February 2011

V. Petrova-Koch
Affiliation:
Physik-Dept. E16, Tech. Univ. München, D-8046 Garching, Germany
A. Kux
Affiliation:
Physik-Dept. E16, Tech. Univ. München, D-8046 Garching, Germany
F. Müller
Affiliation:
Physik-Dept. E16, Tech. Univ. München, D-8046 Garching, Germany
T. Muschik
Affiliation:
Physik-Dept. E16, Tech. Univ. München, D-8046 Garching, Germany
F. Koch
Affiliation:
Physik-Dept. E16, Tech. Univ. München, D-8046 Garching, Germany
V. Lehmann
Affiliation:
Siemens Forschungslaboratorien, Otto-Hahn-Ring 6, D-8000 München 83, Germany
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Abstract

Using thermal effusion of H together with a weighing of the remaining Si we determine the composition of luminescing porous Si. From studies of the IR vibration spectrum and its change with effusion we. argue that the H of freshly prepared microporous Si is bound in the dihydride form SiH2. We thus obtain a surface to volume ratio and a characterisicic linear dimension of the porous surface layer. The paper concludes with some observations on photo- and electroluminescence.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

[1] Lehmann, V. and Gösele, U., Appl. Phys. Lett. 58, 856 (1991)CrossRefGoogle Scholar
[2] Canham, L.T., Appl. Phys. Lett. 57, 1046 (1990)CrossRefGoogle Scholar
[3] Lehmann, V., Cerva, H., Gösele, U., this volumeGoogle Scholar
[4] Gupta, P., Colvin, V.L., George, S.M., Phys. Rev. B 37, 8234 (1988)CrossRefGoogle Scholar
[5] Ito, T., Kato, Y., Hiraki, A., The structure of surfaces II, 378 (Springer 1988)Google Scholar
[6] Robinson, M.B., Dillon, A.C., Haynes, D.R., George, S.M., this volumeGoogle Scholar

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