화학공학소재연구정보센터
Applied Surface Science, Vol.159, 308-312, 2000
MBE growth and electroluminescence of ferromagnetic/non-magnetic semiconductor pn junctions based on (Ga,Mn) As
Molecular beam epitaxial (MBE) growth of novel hybrid ferromagnetic/non-magnetic semiconductor pn junction Light emitting diodes (LEDs) is presented. The ferromagnetic p-type (Ga,Mn)As layers were grown on i-(In,Ga)As/n-GaAs structures to form LED structures. The current-voltage (I-V) characteristics and the electroluminescence (EL) spectra were measured at temperatures from 5 K to room temperature. In comparison to the properties of control samples consisting of all non-magnetic p-GaAs/(In,Ga)As/n-GaAs LEDs, the EL intensity of ferromagnetic/non-magnetic pn junction LEDs exhibited unique temperature dependence.