In this work we present a new physically based model of an integrated photodetector as part of a BD-system (Blu-Ray-Disc, X=405 nm). This model takes care on the transport phenomena within the photodiode as well as of the RC time constant of the device. The model properly predicts the photocurrent of the diode and can be used e.g. as AHDL model in commercial circuit simulators for dc, ac and transient simulations. To demonstrate the accuracy of the model we have compared our results with simulation data using the numerical device simulator AtlaslSilvaco.
This work presents an analytical model which photocurrent of the device can be divided into contributions of describes the opto-electronic conversion of a planar double drift and diffusion currents. For the calculation of the diffusion photodiode. Our model predicts the steady-and the dynamiccurrents we have to solve the diffusion equation within the state of the photodiode with high accuracy without using any fit neutral regions I-III. To come finally to the transfer function of parameters as will be shown by comparison with numerical and the device we excite the photodiode by an optical delta-Diracexperimental results.function and apply the Laplace-transformation on the diffusion
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