Bio-inspired nano-photodiode for Low Light, High Resolution and crosstalk-free CMOS image sensing

Handle URI:
http://hdl.handle.net/10754/564373
Title:
Bio-inspired nano-photodiode for Low Light, High Resolution and crosstalk-free CMOS image sensing
Authors:
Saffih, Faycal; Fitzpatrick, Nathaniel N.; Mohammad, Mohammad Ali; Evoy, S.; Cui, Bo
Abstract:
Previous attempts have been devoted to mimic biological vision intelligence at the architectural system level. In this paper, a novel imitation of biological visual system intelligence is suggested, at the device level with the introduction of novel photodiode morphology. The proposed bio-inspired nanorod photodiode puts the depletion region length on the path of the incident photon instead of on its width, as the case is with the planar photodiodes. The depletion region has a revolving volume to increase the photodiode responsivity, and thus its photosensitivity. In addition, it can virtually boost the pixel fill factor (FF) above the 100% classical limit due to decoupling of its vertical sensing area from its limited planar circuitry area. Furthermore, the suggested nanorod photodiode photosensitivity is analytically proven to be higher than that of the planar photodiode. We also show semi-empirically that the responsivity of the suggested device varies linearly with its height; this important feature has been confirmed using Sentaurus simulation. The proposed nano-photorod is believed to meet the increasingly stringent High-Resolution-Low-Light (HRLL) detection requirements of the camera-phone and biomedical imaging markets. © 2011 IEEE.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2011 IEEE International Symposium of Circuits and Systems (ISCAS)
Conference/Event name:
2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
Issue Date:
May-2011
DOI:
10.1109/ISCAS.2011.5937686
Type:
Conference Paper
ISSN:
02714310
ISBN:
9781424494736
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSaffih, Faycalen
dc.contributor.authorFitzpatrick, Nathaniel N.en
dc.contributor.authorMohammad, Mohammad Alien
dc.contributor.authorEvoy, S.en
dc.contributor.authorCui, Boen
dc.date.accessioned2015-08-04T06:25:20Zen
dc.date.available2015-08-04T06:25:20Zen
dc.date.issued2011-05en
dc.identifier.isbn9781424494736en
dc.identifier.issn02714310en
dc.identifier.doi10.1109/ISCAS.2011.5937686en
dc.identifier.urihttp://hdl.handle.net/10754/564373en
dc.description.abstractPrevious attempts have been devoted to mimic biological vision intelligence at the architectural system level. In this paper, a novel imitation of biological visual system intelligence is suggested, at the device level with the introduction of novel photodiode morphology. The proposed bio-inspired nanorod photodiode puts the depletion region length on the path of the incident photon instead of on its width, as the case is with the planar photodiodes. The depletion region has a revolving volume to increase the photodiode responsivity, and thus its photosensitivity. In addition, it can virtually boost the pixel fill factor (FF) above the 100% classical limit due to decoupling of its vertical sensing area from its limited planar circuitry area. Furthermore, the suggested nanorod photodiode photosensitivity is analytically proven to be higher than that of the planar photodiode. We also show semi-empirically that the responsivity of the suggested device varies linearly with its height; this important feature has been confirmed using Sentaurus simulation. The proposed nano-photorod is believed to meet the increasingly stringent High-Resolution-Low-Light (HRLL) detection requirements of the camera-phone and biomedical imaging markets. © 2011 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.titleBio-inspired nano-photodiode for Low Light, High Resolution and crosstalk-free CMOS image sensingen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journal2011 IEEE International Symposium of Circuits and Systems (ISCAS)en
dc.conference.date15 May 2011 through 18 May 2011en
dc.conference.name2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011en
dc.conference.locationRio de Janeiroen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canadaen
dc.contributor.institutionElectrical and Computer Engineering Department, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L3G1, Canadaen
kaust.authorSaffih, Faycalen
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