Enhanced photoluminescence and photonic bandgap modification from composite photonic crystals of macroporous silicon and nanocrystalline PbS thin films

N. Gutman; A. Armon; A. Sa'Ar; A. Osherov; Y. Golan

doi:10.1063/1.2969054

Enhanced photoluminescence and photonic bandgap modification from composite photonic crystals of macroporous silicon and nanocrystalline PbS thin films

N. Gutman, A. Armon, A. Sa'Ar, A. Osherov, Y. Golan

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We report on the fabrication of composite photonic crystals (PCs) of macroporous silicon and PbS thin films and about their passive and active optical properties. We have measured a redshift in the composite PC photonic stopbands relative to those of the PC substrate. In addition, we have measured a high extraction efficiency of the photoluminescence from the embedded PbS films due to band-edge singularities and slow-light modes of a defect-free two-dimensional composite PC. The peak extraction efficiency has been found to be six times larger than that of planar unpatterned PbS films.

Original language	English
Article number	073111
Journal	Applied Physics Letters
Volume	93
Issue number	7
DOIs	https://doi.org/10.1063/1.2969054
State	Published - 1 Sep 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Enhanced photoluminescence and photonic bandgap modification from composite photonic crystals of macroporous silicon and nanocrystalline PbS thin films",

abstract = "We report on the fabrication of composite photonic crystals (PCs) of macroporous silicon and PbS thin films and about their passive and active optical properties. We have measured a redshift in the composite PC photonic stopbands relative to those of the PC substrate. In addition, we have measured a high extraction efficiency of the photoluminescence from the embedded PbS films due to band-edge singularities and slow-light modes of a defect-free two-dimensional composite PC. The peak extraction efficiency has been found to be six times larger than that of planar unpatterned PbS films.",

author = "N. Gutman and A. Armon and A. Sa'Ar and A. Osherov and Y. Golan",

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AU - Gutman, N.

AU - Armon, A.

AU - Sa'Ar, A.

AU - Osherov, A.

AU - Golan, Y.

N1 - Funding Information: This work was partially funded by the Israel Science Foundation (ISF), Grant No. 1298/07.

PY - 2008/9/1

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N2 - We report on the fabrication of composite photonic crystals (PCs) of macroporous silicon and PbS thin films and about their passive and active optical properties. We have measured a redshift in the composite PC photonic stopbands relative to those of the PC substrate. In addition, we have measured a high extraction efficiency of the photoluminescence from the embedded PbS films due to band-edge singularities and slow-light modes of a defect-free two-dimensional composite PC. The peak extraction efficiency has been found to be six times larger than that of planar unpatterned PbS films.

AB - We report on the fabrication of composite photonic crystals (PCs) of macroporous silicon and PbS thin films and about their passive and active optical properties. We have measured a redshift in the composite PC photonic stopbands relative to those of the PC substrate. In addition, we have measured a high extraction efficiency of the photoluminescence from the embedded PbS films due to band-edge singularities and slow-light modes of a defect-free two-dimensional composite PC. The peak extraction efficiency has been found to be six times larger than that of planar unpatterned PbS films.

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Enhanced photoluminescence and photonic bandgap modification from composite photonic crystals of macroporous silicon and nanocrystalline PbS thin films

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