The excess density of electrons Δnand holes Δpin an LED is ________ – McqOptions

MCQOPTIONS

1.	The excess density of electrons Δnand holes Δpin an LED is ____________
A.	Equal
B.	Δpmore than Δn
C.	Δn more than Δp
D.	Does not affects the LED
Answer» B. Δpmore than Δn

Discussion

No Comment Found

Related MCQs

If a particular optical power is coupled from an incoherent LED into a low-NA fiber, the device must exhibit very high radiance.
Determine coupling efficiency into the fiber when GaAs LED is in close proximity to fiber core having numerical aperture of 0.3.
In a GaAs LED, compute the loss relative to internally generated optical power in the fiber when there is small air gap between LED and fiber core. (Fiber coupled = 5.5 * 10-4Pint)
For a GaAs LED, the coupling efficiency is 0.05. Compute the optical loss in decibels.
A planar LED is fabricated from GaAs is having a optical power emitted is 0.018% of optical power generated internally which is 0.018% of optical power generated internally which is 0.6 P. Determine external power efficiency.
A planar LED fabricated from GaAs has a refractive index of 2.5. Compute the optical power emitted when transmission factor is 0.68.
The Lambertian intensity distribution __________ the external power efficiency by some percent.
Compute power internally generated within a double-heterojunction LED if it has internal quantum efficiency of 64.5 % and drive current of 40 mA with a peak emission wavelength of 0.82 μm.
In a junction diode, an equilibrium condition occurs when ____________
The carrier recombination lifetime becomes majority or injected carrier lifetime.