[융합과학부] Unraveling the full potential of OLEDs: from efficiency enhancement to health-monitoring sensor applications

Speaker: 유승협 교수(KAIST)

Date & Time: 2018년 11월 7일(수) 17:00

Where: 융대원 D-122호

 

Abstract

Organic light-emitting diodes (OLEDs) have been established as light sources in high-end displays in various scales covering micro displays, mobile apparatus, and large-size TVs. In addition, OLEDs are expected to play some role also in lighting applications. In those platforms, high-quality visual characteristics and inherent compatibility with thin-film, large-area devices have been key enabling factors that set OLEDs apart from other technologies. In all of these applications, the importance of efficiency cannot be overemphasized whether it is for saving of global energy consumption or for extending the operation time of portable IT devices. Hence the first part of the talk will address the technologies recently developed for efficiency enhancement in OLEDs. In particular, separate approaches will be presented for both displays and lighting, which have very different requirements.
In the latter part of the talk, flexible OLEDs and organic photodiodes (OPDs) are explored as promising candidates for wearable health-monitoring sensors. In particular, we show that a combination of OLEDs and OPDs can play a key role in wearable sensors not only for form-factor advantages but also for low power consumption particularly important in wearable applications. Design guidelines are provided based on a careful consideration of color-dependent light propagation within the human skin, and actual demonstrations are presented.

Biography

Ph.D, Optical Sciences, University of Arizona (2005)
MS, Physics, Seoul National University (1998)
BS, Physics, Seoul National University (1996)

 

초청자 : 융합과학부 나노융합전공 김창순 교수 (changsoon@snu.ac.kr)

2018-11-05|