Abstract
An unwanted green satellite emission in blue GaInN light emitting diodes (LEDs) has been investigated under various electrical bias conditions and temperatures. The dot-shaped green satellite emission appears only under electrically biased conditions of the LED (but not under photoluminescence excitation) and contributes directly to a high subthreshold leakage current of the LED. A weak temperature dependency of the green satellite emission intensity is observed indicating that tunneling-assisted radiative recombination involving Mg acceptors is the origin of the green emission.
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