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Dr. Michael Weaver

Dr. Michael Weaver

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Dr. Ayse Turak

Organic light emitting devices (OLEDs) today are in billions of displays with revenues exceeding $38 billion annually. This talk will discuss a new type of OLED using surface plasmonic effects that break the conventional OLED operation paradigm, paving the way for a new generation of OLEDs.

Overview

Dr. Michael Weaver
Vice President of PHOLED R&D
Universal Display Corporation

Next Generation OLED Technology.

Abstract:

Organic light emitting devices (OLEDs) today are in billions of displays with revenues exceeding $38 billion annually. One of the key evolutionary points in the commercialization of OLEDs was the invention of phosphorescent OLEDs (PHOLEDs) in 1998 which enabled the harvesting of electrogenerated triplet excitons leading to a potential fourfold increase in efficiency over fluorescent OLEDs. Commercial OLEDs are typically planar which limits the number of photons generated from exiting the device due to the large mismatch in refractive index between the organic stack and air. This leads to an upper limit in external quantum efficiency (EQE) of ~40% with no external outcoupling.

This talk will discuss a new type of OLED that can utilize the surface plasmon mode of thin metallic films to give rise to broadband decay rate enhancements. The use of the surface plasmon mode as a fast energy sink breaks the conventional OLED operation paradigm and increases stability by decreasing the buildup of excitons within the device. The energy within the surface plasmon mode is then recovered using a nanoparticle based plasmon outcoupling scheme. This architecture realizes both increased stability and efficiency compared to conventional architectures paving the way for a new generation of OLEDs.

Biography:

Mike Weaver is Vice President of PHOLED R&D at Universal Display Corporation (UDC). He holds a BSc and PhD in physics (1996) from Sheffield University, UK. From 1996-2000 Mike worked for Sharp in Oxford, UK researching OLED displays before joining UDC in 2000.

At UDC Mike led his team in the development of OLED displays on flexible plastic substrates in addition to working on improving the lifetime and efficiency of phosphorescent OLEDs (PHOLEDs). In 2003, this work led to the commercialization of PHOLEDs in Pioneer’s passive matrix displays. In 2006, AU Optronics launched the first commercial phosphorescent AMOLED display, utilizing technology developed by Mike and his team. Subsequently working with Mike’s team Samsung, LGD, BOE and others have incorporated this technology into most commercial OLED displays. Today 40% of smartphones use an OLED display incorporating PHOLEDs developed by Mike and the team at Universal Display as part of an annual $38 billion OLED market.

Mike has published >125 papers, 4 book chapters and has 134 granted US patents in the field of OLEDs. Mike was awarded the UK Chapter SID Ben Sturgeon Award in 2010. Mike also serves on the SID Board as the East Americas Regional Vice President. In 2021 Mike was made a Fellow of SID.

 

Seminar Recording

Seminar Recording

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Seminar Recording