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Luminescence Bands and their Proposed Origins In Highly Porous Silicon
Author(s) -
Canham L. T.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221900102
Subject(s) - luminescence , porous silicon , photoluminescence , silicon , materials science , porosity , optoelectronics , quantum yield , nanotechnology , yield (engineering) , porous medium , nanostructure , light emission , visible spectrum , chemical physics , optics , chemistry , physics , composite material , fluorescence
Abstract The striking photoluminescent properties of porous silicon nanostructures have received intense study since 1990. This literature review focuses on the large number of models proposed to account for efficient light emission. Two distinct luminescence bands in the visible spectral range have received most study. Strong evidence now exists that quantum confined carriers in crystalline Si can yield efficient red to green (‘S band’) luminescence. The blue (‘F band’) emission reported to date in oxidised porous Si is, however, unlikely to arise from quantum confinement effects.