Abstract
We studied three types of logarithmic photo-receptor elements, consisting of a diode connected MOSFET in series with a photodiode. The performance limits were established and the effects of the device configuration and the operation mode on the logarithmic nature of the response were experimentally verified. It was found that the photoreceptor element biased to a punchthrough mode had a wider dynamic range and output voltage swing than that obtained under subthreshold current mode operation. We measured the logarithmic response of the photoreceptor with a channel length of 3.3 μm and a dark current density of approximately 100 nA/cm2. Measurement was conducted over a range of 104 of incident light intensity with a sensitivity of 650 mV/ decade.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Journal of the Institute of Television Engineers of Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
