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Photoluminescent Materials and Electroluminescent Devices
Articles in Focus
Enjoy free access to selected articles from our recently completed topical collections.
by Catherine E. McCusker, Felix N. Castellano
This review features recent experimental work focused on the preparation and characterization of materials that integrate photochemical upconversion derived from sensitized triplet–triplet annihilation, resulting in the conversion of low energy photons to higher energy light, thereby enabling numerous wavelength-shifting applications. Recent topical developments in upconversion include encapsulating or rigidifying fluid solutions to give them mechanical strength, adapting inert host materials to enable upconversion, and using photoactive materials that incorporate the sensitizer and/or the acceptor. The driving force behind translating photochemical upconversion from solution into hard and soft materials is the incorporation of upconversion into devices and other applications. At present, some of the most promising applications of upconversion materials include imaging and fluorescence microscopy, photoelectrochemical devices, water disinfection, and solar cell enhancement.
by Shi Tang, Ludvig Edman
The light-emitting electrochemical cell (LEC) is an area-emitting device, which features a complex turn-on process that ends with the formation of a p-n junction doping structure within the active material. This in-situ doping transformation is attractive in that it promises to pave the way for an unprecedented low-cost fabrication of thin and light-weight devices that present efficient light emission at low applied voltage. In this review, we present recent insights regarding the operational mechanism, breakthroughs in the development of scalable and adaptable solution-based methods for cost-efficient fabrication, and successful efforts toward the realization of LEC devices with improved efficiency and stability.
National Research Council
Nicola Armaroli got his PhD in Chemical Sciences in 1994 and is presently Research Director at the Institute for Organic Synthesis and Photoreactivity of the Italian National Research Council (CNR) in Bologna. He has published over 180 papers in international journals on the photochemistry and photophysics of coordination compounds, carbon nanostructures and supramolecular arrays and materials, with focus on luminescence, light harvesting, energy transfer and electron transfer. These studies aim at developing new materials for lighting technologies and solar energy conversion. He has published 5 books on energy and its complex related issues and in this area he is a consultant for international agencies and a science communicator for the general public.
University of Valencia
Henk Bolink obtained his PhD in Materials Science at the University of Groningen in 1997 under the supervision of Prof. Hadziioannou. After that he worked at DSM as a materials scientist and project manager in the central research and new business development department, respectively. In 2001 he joined Philips, to lead the materials development activity of Philips´s PolyLED project.
Since 2003 he is at the ICMol of the University of Valencia where he initiated a research line on molecular optoelectronic devices. His current research interests encompass: inorganic/organic hybrid materials and mixed electronic/ionic charge transporting materials and their integration in opto-electronic devices such as leds and solar cells.