intensity & wavelength vs temperature - photon systems...uvled255 output vs current vs forward...
Post on 22-Jul-2020
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255nm LED performance information
Intensity & Wavelength vs Temperature
0
100
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700
-20 -10 0 10 20 30 40 50 60 70
Temperature C
Inte
nsity
, rel
ativ
e un
its
220
230
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250
260
270
280
290
Cen
ter W
avel
engt
h, n
m
255nm LED performance information
Intensity & Wavelength vs. Input current
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1400
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0 5 10 15 20 25
Current input, mA
Inte
nsity
, rel
ativ
e un
its
200
210
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230
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Cen
ter
wav
elen
gth,
nm
UVLED255 output vs current vs forward bias voltage
UVLED-255 Output vs Current vs Vf
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3.5
4
4.5
5
5.5
6
6.5
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7.5
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0 2 4 6 8 10 12 14 16 18 20
Input Current
Volt Forward
0.0E+00
1.0E-05
2.0E-05
3.0E-05
4.0E-05
5.0E-05
6.0E-05
7.0E-05
8.0E-05
9.0E-05
Output (W)
Voltage_Diode_Meas (Volts)Energy (W)
This plot shows the Forward Voltage vs. Input Current. Also shows output as a function of forward Bias current. All this data is at Room Temperature operation
UVLED255, Wavelength and output vs Temperature
255 nm LED Output VS Wavelength @20ma (4/6/06 T.D.)
0
500
1000
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200 210 220 230 240 250 260 270 280 290 300
Wavelength
Out
put
25 deg C 13 deg C -13 deg C -25 deg C-72 deg C -90 deg C -108 deg C
center wavelength at 25 C
The output improved by 600% when the LED was cooled from room temperature to –108oC. In addition, there was a shift to deeper UV by over 5nm.
Beam Patterns UVLED255-Hemi at 0.5cm from surface of LED
UVLED255-Hemi at 2.0cm from surface of LED
UVLED255 at surface of LED
UVLED255 at 1.0cm from surface of LED
LED Angular distribution of light
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