DARK CURRENT SHOT NOISE DARK CURRENT FPN ... IS THE DARK CURRENT FPN FACTOR ONSET OF DARK FPN I/DN...

Post on 30-Apr-2018

217 views 1 download

Transcript of DARK CURRENT SHOT NOISE DARK CURRENT FPN ... IS THE DARK CURRENT FPN FACTOR ONSET OF DARK FPN I/DN...

DARK CURRENT NOISE SOURCES

DARK CURRENT SHOT NOISE

DARK CURRENT FPN

DARK CURRENT FPN FACTOR

σD_SHOT+FPN

σD_SHOT

1.5 e-/DN

DN= 0.3

8 um PIXELtI = 1 secDN =0.30DFM = 0.052 nA/cm2

σREAD(DN)= 3.33KADC(e-/DN) = 1.5T= 300 K

90 DN

14.4 DN

2

1

300

DN

SIGNAL, DN

NO

ISE,

DN

σD_FPN =σD_SHOT

DARK PHOTON TRANSFER

1.5 e-/DN

50 C

40 C

10 C

20 C

30 C

0 C

-10 C

σSHOT(DN)

DARK CURRENTABSENT

SIGNAL, DN

NO

ISE,

DN

DFM = 0.5 nA/cm2

DN= 0.3PA= (8 x 10-4)2 cm2

PHOTON TRANSFER WITH DARK CURRENT FPN NOISE

1.5 e-/DN

50 C

-10 C

σSHOT(DN)

DARK CURRENTABSENT

SIGNAL, DN

NO

ISE,

DN

DFM = 0.5 nA/cm2

DN= 0.3PA= (8 x 10-4)2 cm2

PHOTON TRANSFER WITH DARK CURRENT SHOT NOISE

DARK CURRENT SPIKES (HOT PIXELS)

SILICON IMPURITIES ORDEFECTS IN THEPRESENCE OF HIGHELECTRIC FIELDS CREATEDARK SPIKES