Question

Calculate the ''In'' composition for the alloy InGaN which have a band gap needed to produce blue light and red light emission (ignore quantum or strain effects).

Band gap: InN:0.7ev ; GaN:3.4ev

Answer #1

We can find this using the following equation

Calculate the ''In'' composition for the alloy InGaN which have
a band gap needed to produce blue light and red light emission
(ignore quantum or strain effects).
Band gap: InN:0.7ev ; GaN:3.4ev

Recall from your homework last week that the lowest-mass stars
are called "M-dwarfs", which have masses and diameters that are
typically 1/5th that of the Sun. These stars are also
much cooler than the Sun. The temperature of a typical
M-dwarf star is approximately 3,000 K.
(i) Calculate the wavelength of maximum intensity for the
emission from an M-dwarf and compare it to that of the Sun
(TSun = 5,800 K).
(ii) Sketch the thermal spectrum of each star together on the...

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