Title :
Modulation transfer function and quantum efficiency in thin semiconductor photodetectors
Author_Institution :
Dept. of Electr. & Electron. Eng., Adelaide Univ., SA, Australia
fDate :
8/1/2002 12:00:00 AM
Abstract :
For the first time, the correct equation for quantum efficiency, and hence modulation transfer function (MTF) in a semiconductor of finite thickness, is reported. This first-order analysis considers only the three basic effects of absorption coefficient, minority carrier diffusion length and depletion width. This is of interest in the first-order design of photodetectors, optical smart sensors and solid-state imagers
Keywords :
carrier lifetime; image sensors; intelligent sensors; minority carriers; optical sensors; optical transfer function; photodetectors; MTF; absorption coefficient; depletion width; first-order analysis; first-order design; minority carrier diffusion length; modulation transfer function; optical smart sensors; quantum efficiency; solid-state imagers; thin semiconductor photodetectors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020546
