@article{zu28346,
          volume = {104},
           title = {The effect of current crowding on the heat and light pattern in high-power AlGaAs light emitting diodes},
          author = {A. V. Zinovchuk and O. Yu. Malyutenko and V. K. Malyutenko and A. D. Podoltsev and A. A. Vilisov},
       publisher = {American Institute of Physics},
            year = {2008},
         journal = {Journal Of Applied Physics},
        keywords = {current crowding, AlGaAs , temperature gradient},
             url = {http://eprints.zu.edu.ua/8346/},
        abstract = {The results of the light and temperature micromapping in AlGaAs light emitting diodes grown by
liquid phase epitaxy as double heterostructures and emitting at ??0.87 ?m are presented. At a
driving current well above the safe operating limit ??300 mA?, the nonuniform light pattern and
local self-heating ?with temperature gradient of about 950 ?C/cm? followed by catastrophic
degradation of a device were detected with the charge coupled device and infrared microscopes
operating in a pulsed mode. These were shown to result from the current crowding effect in the active and contact areas of a device. Good agreement between the theory and experiment was found}
}