Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"light outcoupling"”.
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Incorporating double-heterojunction in anisotropic semiconductor nanocrystals for novel optoelectronic applications
… quantum efficiency being achieved leaves light outcoupling as the only remaining means to improve external quantum efficiency (EQE) but that might require radically different device design and reoptimization. However, the current state-of-the-art QD-LEDs are based on spherical core/shell …
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Device physics of perovskite light-emitting diodes
… emerged as next-generation semiconductors for light emission, owing to their bright luminescence, excellent charge-transport properties, ease of processing and tunable bandgap. In less than a decade, the external quantum efficiency of perovskite light-emitting diodes (PeLEDs) has increased …
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High efficiency top-emitting organic light-emitting diodes: design and fabrication
… OLEDs are discussed. Also, the mechanism of light outcoupling enhancement by a capping layer is discussed there. In the last part of Chapter 4, the influence of the optical device structure on the intrinsic quantum yield of the emitters is studied. Chapter 5 is focused on inverted …
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Exploring charge carrier dynamics in quantum dot and double heterojunction nanorod light emitting devices using transient electroluminesence measurements
… of materials showing significant promise for light emitting applications due to their size tunable optical band gap, compatibility with scalable bottom-up colloidal synthesis techniques, and ability to be processed using simple solution-based deposition techniques. Light emitting devices …
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Quanteneffizienz und Langzeitstabilität monochromer organischer Leuchtdioden
Den Fokus dieser Arbeit bildet die Untersuchung und die konzeptionelle Verbesserung der wichtigsten Eigenschaften organischer Leuchtdioden (OLED) – die Lebensdauer und die Quantenausbeute, welche sich durch die interne und externe Quanteneffizienz kategorisieren lässt. Es werden monochrome pin- …