Three-dimensional broadband FDTD optical simulations of CMOS image sensor

A. Crocherie; J. Vaillant; F. Hirigoyen

doi:10.1117/12.797417

27 September 2008 Three-dimensional broadband FDTD optical simulations of CMOS image sensor

A. Crocherie, J. Vaillant, F. Hirigoyen

Proceedings Volume 7100, Optical Design and Engineering III; 71002J (2008) https://doi.org/10.1117/12.797417
Event: Optical Systems Design, 2008, Glasgow, Scotland, United Kingdom

Abstract

In this paper, we present the results of rigorous electromagnetic broadband simulations applied to CMOS image sensors as well as experimental measurements. We firstly compare the results of 1D, 2D, and 3D broadband simulations in the visible range (380nm-720nm) of a 1.75μm CMOS image sensor, emphasizing the limitations of 1D and 2D simulations and the need of 3D modeling, particularly to rigorously simulate parameters like Quantum Efficiency. Then we illustrate broadband simulations by two proposed solutions that improve the spectral response of the sensor: an antireflective coating, and the reduction of the optical stack. We finally show that results from experimental measurements are in agreement with the simulated results.

Citation Download Citation

A. Crocherie, J. Vaillant, and F. Hirigoyen "Three-dimensional broadband FDTD optical simulations of CMOS image sensor", Proc. SPIE 7100, Optical Design and Engineering III, 71002J (27 September 2008); https://doi.org/10.1117/12.797417

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