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A double heterojunction InGaAsP LED operating at 1310 nm has radiative and non-radiative recombination times of 30 and 100 ns respectively. ..

A double heterojunction InGaAsP LED operating at 1310 nm has radiative and non-radiative recombination times of 30 and 100 ns respectively. The current injected is 40Ma. Calculate, Bulk recombination lifetime. Internal quantum efficiency Internal power level.

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Solution:

λ=1310 nm=(1.31×106 m)

τrr=30 nsτrr=100 ns

Bulk Recombination Lifetime (τ):

ηint=ττr

1τ=1τr+1τnr

Internal quantum efficiency (ηint):

$ \begin{aligned} & \eta_{i n t}=\frac{23.07}{30} \\\\ & \eta_{i n t}=\mathbf{0 . …

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