Marshall, GF,Jackson, JC,Denton, J,Hurley, PK,Braddell, O,Mathewson, A

2004

March

IEEE Transactions On Electron Devices

Avalanche photodiode-based active pixel imager

Validated

Altmetric: 3 ()

avalanche photodiodes (APDs) photodiodes smart pixels image sensors subtwilight imaging SENSOR

51

509

511

In this brief, an integrated avalanche photodiode-active pixel sensor (APD-APS) for "daylight to subtwilight" imaging has been demonstrated. Excellent logarithmic response of the APS was demonstrated by images taken with a 64 x 64 pixel array. Image degradation occurred when the APD was operated in sub-Geiger avalanche mode. Analysis of the APD current revealed that leakage from parasitic diodes obscured the internal avalanche gain. The parasitics will be shown to impede fabricating of useful APD-APS circuits and advanced isolation techniques must be employed to operate in avalanche mode.

10.1109/TED.2003.823051