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Abstract Originating from a non-radiative recombination in the active region of a light-emitting diode (LED), the self-heating effect was investigated under continuous wave ( cw ) operation with a GaInN… Click to show full abstract
Abstract Originating from a non-radiative recombination in the active region of a light-emitting diode (LED), the self-heating effect was investigated under continuous wave ( cw ) operation with a GaInN blue LED. Current–voltage (I–V) characteristics under pulse operation that lacked self-heating were measured and compared with the corresponding I–V measurement under the cw operation. Accordingly, a comparison of the measured I–V curves enabled estimation of the junction temperature of the LED during the cw operation. The junction temperature of the device increased as high as 323 K at an input current of 480 mA. The operating current showed a weaker temperature dependence in accordance with the bias increase, which is explained by the expansion of the Shockley diode equation.
Journal Title: Thin Solid Films
Year Published: 2017
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