Modeling of light absorption in solid state imagers

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Title: Modeling of light absorption in solid state imagers
Author: Philbrick, Robert H.
Abstract: In this paper, a model for predicting the quantum efficiency and responsivity of silicon based solid state photodiodes is presented. The model is first developed using semiconductor theory and then implemented in a computer software program. Correct operation of the modeling program is verified by comparing the published reflectance curves of several silicon dioxide-silicon substrate samples with the reflectance curves produced by the modeling program. Next, a system capable of measuring photodiode quantum efficiency and responsivity is presented and used to measure quantum efficiency and responsivity for a photodiode specimen. Finally, the measured and modeled quantum efficiency and responsivity results for the photodiode specimen are compared and found to be in good agreement.
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Date: 1990-01

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