THE COINAGE METALS COPPER SILVER AND GOLD PROFESSIONAL
Thompson is the author of approximately 400 papers in refereed professional journals and holds more than 250 patents primarily in the areas of optoelectronic applications, such as light emitting devices (LEDs) and solar cells. His research involves the study of materials and devices for electroluminescence, photovoltaics and solar cells, chemical/biological sensing and catalysis. In 1995, he moved his research team to the University of Southern California where he holds the Ray R. He spent 2 years as a postdoctoral fellow at Oxford University before taking a position in the chemistry department at Princeton University in 1987, as an assistant professor. in chemistry in 1985 (California Institute of Technology). We have prepared organic LEDs with these dopants and achieved > 20% EQE for green emissive OLEDs and > 12% for blue emissive OLEDs, both at comparatively low drive voltages. Cryogenic photophysical measurements show these TADF emitters have singlet-triplet gaps as low as 150 cm-1 (20 meV). These complexes show high phosphorescence quantum yield (PLQY = 0.7 – 1.0), with radiative lifetimes in 0.4-3 microsecond regime. (carbene)MI(donor), where the donor is an amide or aryl group. My talk will focus on the photophysical and electroluminescent properties of two coordinate copper, silver and gold carbene complexes, i.e. We have found that the key to achieving higher performance for TADF emitters is to put the metal ions back into the TADF emitters. Heavy-metal and TADF emitters give similar OLED performance, which stems from the fact that they give very similar radiative lifetimes. An alternative to Ir-based emitters are solely-organic emitters based on Thermally Assisted Delayed Fluorescence (TADF). The high spin orbit coupling in these compounds facilitates the efficient harvesting of both singlet and triplet excitons generated in the electroluminescent process. Heavy metal containing phosphors, especially iridium-based emitters, have become the standard in high performance mobile displays and televisions.
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