Symposium EP02—Excitonic Materials—Physics, Characterization and Devices
Materials that host stable excitons at room temperature (i.e. exciton binding energy substantially greater than kT) offer unique opportunities for exploiting these particles. Their potential has been realized through the commercialization of displays based on organic light-emitting diodes (OLED) and quantum dots (QD). Beyond displays, excitonic materials also offer a host of opportunities in solid-state lighting, solar cells, lasers, and information processing.
There is an increasing need to understand the fundamental behavior of excitons in an effort to establish material design and device engineering strategies that can exploit their unique properties; including exciton-exciton and exciton-charge interactions, and long-range exciton transport. Such exciton engineering seeks to utilize phenomena that are present within the bulk of a material and at device-relevant interfaces. These phenomena have been shown to be controlled through changes to the bulk material (e.g. QD size or molecular structure), layer composition (e.g. host:guest or donor:acceptor systems), or through control of material morphology and processing (e.g. molecule orientation or crystallinity). The near infinite variability in material and interface selection and preparation has proven critical in the ability to control and better understand device function.
This symposium will cover all materials that exhibit excitonic behavior, including but not limited to conjugated molecules, quantum dots, and other quantum-confined, excitonic systems such as 2D semiconductors made from chalcogenides. This symposium intends to cover the latest insights on the fundamental characteristics of these materials, in particular related to their photonic and excitonic properties, as well as emerging device concepts and applications.