Current crowding impact at spatially and temporarily resolved thermal characters of large-area AlGaInP light emitting diodes operating in dimming/flashing modes

By exploring spatially (μm-scale) and temporarily (ms-scale) resolved light and 8–12 μm thermal imaging analyses, we demonstrate how current crowding alternates the thermal parameters of light emitting diodes (LEDs) operating in dimming/flashing mode. For example, in AlGaInP/GaAs high-current (I ≥ 1...

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Veröffentlicht in:	Journal of applied physics 2015-10, Vol.118 (15)
Hauptverfasser:	Malyutenko, V. K., Podoltsev, A. D., Malyutenko, O. Yu
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum gallium indium phosphides Applied physics Computer simulation Crowding Current density Diffusion length Dimming Gallium arsenide High current Light emitting diodes Organic light emitting diodes Ships Substrates Temperature Thermal diffusivity Thermal imaging Thermal resistance Thermodynamic properties Time constant
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