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Photocurrent pin photodiode Consider a Si pin photodiode with a depletion layer width of 30 om and diameter of 300om. The absorption coefficient at 800 nm is 103 cm-1 . Find the quantum efficiency of this photodiode, assuming perfect AR coating. If the load resistance is 10 kO, obtain the RC time constant. What would happen if there is no AR coating so that T = 0.70?