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Analytical Pinning-Voltage Model of a Pinned Photodiode in a CMOS Active Pixel Sensor
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- Authors
- Sung-Sik Lee, Arokia Nathan, Myung-Lae Lee, Chang-Auck Choi
- Issue Date
- 2011-11
- Citation
- Journal of Sensor Science and Technology, v.20, no.1, pp.14-18
- ISSN
- 1225-5475
- Publisher
- 한국센서학회
- Language
- English
- Type
- Journal Article
- 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.
- KSP Keywords
- Active pixel sensor, Doping profile, Pinned photodiode, Process Parameters, Proposed model, Voltage model