Modeling and measurements of MTF and quantum efficiency in CCD and CMOS image sensors

Ibrahima Djité; Pierre Magnan; Magali Estribeau; Guy Rolland; Sophie Petit; Olivier Saint-pé

doi:10.1117/12.839175

25 January 2010 Modeling and measurements of MTF and quantum efficiency in CCD and CMOS image sensors

Ibrahima Djité, Pierre Magnan, Magali Estribeau, Guy Rolland, Sophie Petit, Olivier Saint-pé

Proceedings Volume 7536, Sensors, Cameras, and Systems for Industrial/Scientific Applications XI; 75360H (2010) https://doi.org/10.1117/12.839175
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

Sensitivity and image quality are two of the most important characteristics for all image sensing systems. The Quantum Efficiency (QE) and the Modulation Transfer Function (MTF) are respectively the common metrics used to quantify them, but inter-pixel crosstalk analysis is also of interest. Because of an important number of parameters influencing MTF, its analytical calculation and crosstalk predetermination are not an easy task for an image sensor, particularly in the case of CMOS Image Sensor (CIS). Classical models used to calculate the MTF of an image sensor generally solve the steady-state continuity equation in the case of a sinusoidal type of illumination to determine the MTF value by a contrast calculation. One of the major drawbacks of this approach is the difficulty to evaluate analytically the crosstalk. This paper describes a new theoretical three-dimensional model of the diffusion and the collection of photo-carriers created by a point-source illumination. The model can take into account lightly-doped EPI layers which are grown on highly-doped substrates. It allows us to evaluate with accuracy the crosstalk distribution, the quantum efficiency and the MTF at every needed wavelengths. This model is compared with QE, MTF measurements realized on different pixel types.

Citation Download Citation

Ibrahima Djité, Pierre Magnan, Magali Estribeau, Guy Rolland, Sophie Petit, and Olivier Saint-pé "Modeling and measurements of MTF and quantum efficiency in CCD and CMOS image sensors", Proc. SPIE 7536, Sensors, Cameras, and Systems for Industrial/Scientific Applications XI, 75360H (25 January 2010); https://doi.org/10.1117/12.839175

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available