Semiconductor LED's have a slow response time and hence a low frequency operation and low band width because: а. their produced photons are mainly due to the diffusion process of the injected carriers b. Their produced photons are due to injected electrons having a low drift velocity only in n-side of the junction С. Their produced photons are due to injected holes having a low drift velocity only in p-side of the junction d. Their produced photons are due to injected electrons and holes having a low drift velocity due to low biasing voltage.
Semiconductor LED's have a slow response time and hence a low frequency operation and low band width because: а. their produced photons are mainly due to the diffusion process of the injected carriers b. Their produced photons are due to injected electrons having a low drift velocity only in n-side of the junction С. Their produced photons are due to injected holes having a low drift velocity only in p-side of the junction d. Their produced photons are due to injected electrons and holes having a low drift velocity due to low biasing voltage.
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Transcribed Image Text:Semiconductor LED's have a slow
response tiте аnd hencе a low
frequency operation and low band
width because:
а.
their produced photons
are mainly due to the
diffusion process of the
injected carriers
b. Their produced photons
are due to injected
electrons having a low
drift velocity only in
n-side of the junction
С.
Their produced photons
are due to injected
holes having a low drift
velocity only in p-side
of the junction
d. Their produced photons
are due to injected
electrons and holes
having a low drift
velocity due to low
biasing voltage.
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