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Organic Light-Emitting Diodes: Working Principles and Applications
This lecture covers the working principles and applications of Organic Light-Emitting Diodes (OLEDs), two-terminal devices made from organic semiconductors used for displays and lighting. It explains the basic steps in electroluminescence in organic solids, from charge carrier injection to radiative exciton decay. The lecture also discusses the evolution of OLED devices from monolayer to multilayer structures to increase efficiency. Commercialized OLED applications in TV, laptop, and smartphone displays are highlighted, emphasizing the individual OLEDs emitting red, green, and blue light to create color-tunable pixels.