ISSN:
1573-4854
Keywords:
porous Si
;
luminescence
;
nanoparticle
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The excitation energy dependence of red-luminescence spectrum of porous Si prepared in different conditions is investigated in detail. The dependence has shown that the luminescence peak energy EL of the porous Si nanoparticle is related to the bandgap Eg by EL = 0.65 Eg+0.44 (eV). The relation has been explained from the model that holes in the Si nanoparticles excited by the interband excitation are trapped and then radiatively recombine with electrons in the conduction band.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009619711775
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