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Current spreading, heat transfer, and light extraction in multipixel LED array
M.V. Bogdanov, K.A. Bulashevich, I.Yu. Evstratov, S.Yu. Karpov
phys. stat. solidi (c) 5, No. 6, 2070–2072 (2008) (04) |
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| Using simulation, we have investigated into the current spreading, heat transfer, and light emission in a
high-power light-emitting diode (LED) with an interdigitated multipixel array (IMPA) chip design. The
main advantages of such LEDs compared with conventional square-shaped ones, like a lower series resistance
and a higher emission efficiency at high currents, are interpreted in terms of current spreading and
local active region overheating originated from the current crowding typical for planar LED dice. |
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