Question: At room temperature ( 3 0 0 K ) , a photodiode at zero bias of 1 0 6 resistance under 1 W blackbody radiation

At room temperature (300 K), a photodiode at zero bias of 106 resistance under 1W blackbody radiation on 0.2cm x0.2cm detector area generates 0.5 A of photocurrent in a noise bandwidth of 1000 Hz. Assuming shot noise and Johnson noise are the dominating noise sources, 1. What is the responsivity? 2. What is the total noise? 3. What is the specific detectivity?

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