BARBIER, Remi (University of Lyon 1 - IPNL) - NDIP 11 - IN2P3
BARBIER, Remi (University of Lyon 1 - IPNL) - NDIP 11 - IN2P3
BARBIER, Remi (University of Lyon 1 - IPNL) - NDIP 11 - IN2P3
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Introduction – Photoelectric effect<br />
The photoelectric effect is responsible for the photon detection.<br />
We can distinguish two types:<br />
1. External: the phe is emitted into the vacuum from a photocathode material.<br />
2. Internal: the phe is excited and occupies the conduction band <strong>of</strong> the<br />
semiconductor material, the photoconductive effect.<br />
material<br />
External<br />
Vacuum<br />
Two types <strong>of</strong> photon detection<br />
pe escapes the material Notation in what follows:<br />
• ph = photon<br />
• pe = photoelectron<br />
• e/h = electron/hole<br />
pe in the Cond. band<br />
Rémi Barbier, <strong>NDIP</strong> 20<strong>11</strong>, <strong>Lyon</strong>, France, July 4-8 tutorial : photodetectors<br />
<br />
Cond. Band<br />
7
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