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http://dx.doi.org/10.5369/JSST.2011.20.1.14

Analytical Pinning-Voltage Model of a Pinned Photodiode in a CMOS Active Pixel Sensor  

Lee, Sung-Sik (London Center for Nanotechnology, University College London)
Nathan, Arokia (London Center for Nanotechnology, University College London)
Lee, Myung-Lae (Electronics and Telecommunications Research Institute(ETRI))
Choi, Chang-Auck (Electronics and Telecommunications Research Institute(ETRI))
Publication Information
Journal of Sensor Science and Technology / v.20, no.1, 2011 , pp. 14-18 More about this Journal
Abstract
An analytical pinning-voltage model of a pinned photodiode has been proposed and derived. The pinning-voltage is calculated using doping profiles based on shallow- and exponential-junction approximations. Therefore, the derived pinning-voltage model is analytically expressed in terms of the process parameters of the implantation. Good agreement between the proposed model and simulated results has been obtained. Consequently, the proposed model can be used to predict the pinning-voltage and related performance of a pinned photodiode in a CMOS active pixel sensor.
Keywords
CMOS active Pixel Sensor; Pinning-Voltage; Pinned Photodiode; Analytical Model; Low voltage Operation;
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