%0 Journal Article
%T Light emitting diode as a photorefectance pump source
%A Leonardo Dias de Souza
%A Ivan Frederico Lupiano Dias
%A Edson Laureto
%A Dari Oliveira Toginho Filho
%J Semina : Ci¨ºncias Exatas e Tecnol¨®gicas
%D 2008
%I State University of Londrina
%X Light-emitting diodes (LEDs) with different wavelengths are used as photorefectance light pump sources. Photorefectance spectra of bulk semiconductors of GaAs and GaAs/InGaP and GaAsSbN/GaAs heterostructures prepared on GaAs substrates were investigated, using blue, green, orange and red LEDs, in comparison with spectra obtained with the use of Ar and He-Ne lasers, using a conventional technique. Results show the possibility of using LEDs as pump light sources in photorefectance measurements.
%K Photorefectance
%K Pump Source
%K Light-emitting diodes
%U http://www.uel.br/revistas/uel/index.php/semexatas/article/view/2976