Digitale Medien
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
61 (1992), S. 1447-1449
ISSN:
1077-3118
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Changes in dangling bond densities in porous silicon were measured and results indicate a relatively low dangling bond density (roughly 3×1016 bonds/cm3) in as-prepared samples, which increases by a factor of 6–7 upon quenching of the photoluminescence (PL). The electron spin resonance (ESR) data suggest the presence of significant disorder in the as-prepared 1 Ω cm porous silicon samples, which may correlate with an enhanced PL intensity. The results of heat cycling and HF dipping experiments suggest that a continuous decrease in particle size does not result in a continuous PL blue shift, as would be expected in the quantum confinement model. These results will be discussed in terms of a hydride/polysilane luminescence mechanism.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.107565
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