Download E-books Device Architecture and Materials for Organic Light-Emitting Devices: Targeting High Current Densities and Control of the Triplet Concentration PDF

By Sarah Schols

Device structure and fabrics for natural Light-Emitting units focuses at the layout of recent gadget and fabric suggestions for natural light-emitting units, thereby focusing on excessive present densities and a higher keep watch over of the triplet focus. a brand new light-emitting equipment structure, the OLED with field-effect electron delivery, is validated. This gadget is a hybrid among a diode and a field-effect transistor. in comparison to traditional OLEDs, the metal cathode is displaced through one to numerous micrometers from the light-emitting sector, decreasing optical absorption losses. The electrons injected via the cathode collect at an natural heterojunction and are transported to the light-emission region by way of field-effect. excessive mobilities for cost providers are completed during this approach, permitting a excessive present density and a discounted variety of cost vendors within the equipment. Pulsed excitation experiments express that pulses right down to 1 µs will be utilized to this constitution with no affecting the sunshine depth, suggesting that pulsed excitation may help to minimize the buildup of triplets within the machine. the mix of most of these houses makes the OLED with field-effect electron shipping really fascinating for waveguide units and destiny electrically pumped lasers. additionally, triplet-emitter doped natural fabrics, in addition to using triplet scavengers in conjugated polymers are investigated.

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