DocumentCode :
29682
Title :
A Study of Crosstalk in a 
Photon Counting Imager Based on Silicon Geiger-Mode Avalanche Photodiodes
Author :
Aull, Brian F. ; Schuette, Daniel R. ; Young, Douglas J. ; Craig, David M. ; Felton, Bradley J. ; Warner, Keith
Author_Institution :
MIT Lincoln Lab., Lexington, MA, USA
Volume :
15
Issue :
4
fYear :
2015
fDate :
Apr-15
Firstpage :
2123
Lastpage :
2132
Abstract :
We demonstrate a 256 × 256 passive photon counting imager based on hybridization of back-illuminated silicon Geiger-mode avalanche photodiodes to an all-digital CMOS counting chip. Photon detection efficiencies in the 10%-20% are observed at visible wavelengths. The detection efficiency is currently limited by optical crosstalk that leads to elevation of dark count rates as the bias voltage on the photodiodes is increased. Both the time dependence of dark count activity during a gate time and the spatial structure of dark images were successfully explained using crosstalk-based models.
Keywords :
CMOS image sensors; avalanche photodiodes; elemental semiconductors; optical crosstalk; photodetectors; photon counting; silicon; Si; all-digital CMOS counting chip; back-illuminated silicon Geiger-mode avalanche photodiode hybridization; bias voltage; crosstalk-based models; dark count activity; dark count rates; dark images; gate time; optical crosstalk; passive photon counting imager; photon detection efficiency; spatial structure; time dependence; visible wavelengths; Arrays; CMOS integrated circuits; Crosstalk; Detectors; Photonics; Silicon; Geiger mode; Geiger-mode; Image sensors; SPAD array; avalanche photodiodes; breakdown voltage; dark count rate; detectors; diodes; p-n junctions; photodetectors; quantum efficiency; signal detection; silicon; single-photon avalanche diodes; single-photon counting; single-photon detection; singlephoton counting;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2014.2368456
Filename :
6949063
Link To Document :
