Spark-processing — A novel technique to prepare light-emitting, nanocrystalline silicon

The properties of spark-processed Si appear quite promising for applications like optically active components. Spark-processed Si photoluminesces strongly in the violet and in the green spectral range (dependent on processing). The response is fast (nanoseconds), and its stability against HF etching...

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Bibliographic Details
Published in:Journal of luminescence 1996-05, Vol.68 (2), p.69-76
Main Authors: Hummel, R.E., Ludwig, M.H.
Format: Article
Language:English
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Summary:The properties of spark-processed Si appear quite promising for applications like optically active components. Spark-processed Si photoluminesces strongly in the violet and in the green spectral range (dependent on processing). The response is fast (nanoseconds), and its stability against HF etching, intense laser irradiation, and annealing is remarkable. The microstructure reveals nanocrystalline Si particles which are imbedded in an amorphous matrix. An unambiguous link between these nanocrystals and photoluminescence has not been established. However, several other proposed mechanisms can be excluded based on experimental evidence.
ISSN:0022-2313
1872-7883
DOI:10.1016/0022-2313(96)00003-8