Page 211 - Organic Electronics in Sensors and Biotechnology

188 Chapter Five

1.00 1.00
Normalized intensity 0.50
0.75
Normalized intensity 0.50 0.00 0.0 Time (ms) 0.2
0.75
0.25
0.1

0.25

0.00
0.0 0.5 1.0 1.5 2.0 2.5
Time (ms)

FIGURE 5.18 Normalized intensities of the OLED EL tail + sensor fi lm PL
measured during 0.1 and 1 ms pulses of a microcavity OLED; the OLED
structure was [26.7 nm Ag] / [5 nm CuPc] / [85 nm NPD] / [85 nm Alq ] /
3
[1 nm LiF] / [136 nm Al]. The inset shows the normalized intensity measured
during a 0.1 ms pulse of a conventional ITO/ [5 nm CuPc] / [50 nm NPD] /
[50 nm Alq ] / [1 nm LiF]/ [136 nm Al] OLED. The measurement was
3
performed in the gas phase under ambient conditions with a PtOEP:PS
sensing fi lm with a 600 nm long-pass fi lter. As such, the intensities during
the pulses show a combination of the EL tail and the PL. The FWHMs of the
EL conventional and microcavity OLEDs were 94 and 19 nm, respectively.

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