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Proceedings Paper

Transient emission in OLEDs: implications for sensing applications
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Paper Abstract

Typical guest-host small molecular OLEDs (SMOLEDs) exhibit an emission spike at 100 - 200 ns and a tail that extends over several μs following a bias pulse. The spike and tail are attributed to recombination of correlated charge pairs and detrapped charges (mostly from the host shallow states), respectively. They may also be associated with other OLED layers and other phenomena, e.g., triplet-triplet annihilation. The implications of the spike and tail for OLED-based, photoluminescent oxygen sensors operated in the time domain are evaluated and compared to the behavior observed when using undoped OLEDs or inorganic LEDs as the excitation sources.

Paper Details

Date Published: 27 August 2009
PDF: 9 pages
Proc. SPIE 7418, Organic Semiconductors in Sensors and Bioelectronics II, 74180D (27 August 2009); doi: 10.1117/12.826927
Show Author Affiliations
Rui Liu, Iowa State Univ. (United States)
Zhengqing Gan, Iowa State Univ. (United States)
Yuankun Cai, Iowa State Univ. (United States)
Alex Smith, Integrated Sensor Technologies, Inc. (United States)
Joseph Shinar, Iowa State Univ. (United States)
Integrated Sensor Technologies, Inc. (United States)
Ruth Shinar, Integrated Sensor Technologies, Inc. (United States)
Iowa State Univ. (United States)


Published in SPIE Proceedings Vol. 7418:
Organic Semiconductors in Sensors and Bioelectronics II
Ruth Shinar; George G. Malliaras, Editor(s)

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