Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
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R vs T for intrinsic semiconductor<br />
<strong>Bolometers</strong> measure the resistance R via Vout<br />
Vbias<br />
RL<br />
R Vout<br />
Detection of Light: <strong>Lecture</strong> <strong>10</strong><br />
Rd =<br />
...where the number of charge carriers is:<br />
So, R depends on the temperature:<br />
From previous lectures, we know that:<br />
1 l<br />
wd<br />
n0 =2<br />
= 1<br />
qn0µn<br />
✓ 2m ⇤ nkT<br />
h 2<br />
l<br />
wd<br />
◆ 3/2<br />
R = R0T 3/2 e B/T<br />
...where and are constants<br />
R0<br />
e (Ec EF )/kT<br />
B
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