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 17 of 17 for “"Qd-led"”.
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Ultra-High Resolution Environmentally-Friendly Full-Colour Quantum Dot Display Fabricated via Cracking Assisted Transfer Printing
… along with extended lifetimes. Quantum dots (QDs) have emerged as a leading emissive material in the in this application, with the properties of tuneable bandgap controlled by the QD size and composition, high photoluminescence quantum yield (PLQY), high colour purity with narrow emission …
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Deposition of colloidal quantum dots by microcontact printing for LED display technology
… a quantum dot organic light-emitting diode (QD-LED). A monolayer of quantum dots is microcontact printed as small as 20 ,Lm lines as well as millimeter scale planes, and the resulting devices show quantum efficiencies as high as 1.2% and color saturation superior to previous QD-LEDs'. Through …
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Studies on the next-generation quantum dots light-emitting diodes for full-colour display and smart lighting application by printing technology
… candidates, a quantum dot light-emitting device (QD-LED) is strongly recommended for the next-generation display and lighting application. Herein, this thesis touches the studies on the science and technologies of QD-LEDs from the material, the process technology, the device design and …
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Charge and exciton dynamics in quantum dot light-emitting diodes
… quantum dot based light-emitting diodes (QD-LEDs) offer the possibility of bright, saturated, and tunable emission for the next generation of display and solid state lighting technologies. In this thesis, we study how the interplay of charges and excitons in a QD-LED affect its operational …
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Fabrication and optimization of light emitting devices with core-shell quantum dots
Quantum dot light emitting devices (QD-LEDs) are promising options for the next generation of solid state lighting, color displays, and other optoelectronic applications. Overcoating quantum dots (QDs) -- semiconducting nanocrystals of CdSe, PbS, or another similar compound -- with a wide band-gap …
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Commercialization potential of quantum dot light emitting devices
… this work, quantum dot light emitting devices (QD-LEDs) using small molecule host materials are evaluated as a potential platform for the growing OLEO industry. Specific applications are suggested and the primary technology hurdles identified. A search of relevant patents pertaining to quantum …
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Morphological and Electrical Change of Driven Quantum Dot LEDs
Quantum dot LEDs (QD-LEDs) are an emerging technology that promises brighter, more color pure, higher-color gamut displays. In recent years, indium phosphidenquantum dots have become the one of the most promising device emitters due to their lower toxicity. However, InP QD-LED devices require …
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All inorganic colloidal quantum dot LEDs
… colloidal quantum dot light emitting devices (QD-LEDs) with metal oxide charge transport layers. Colloidally synthesized quantum dots (QDs) have shown promise as the active material in optoelectronic devices because of their tunable, narrow band emission. To date, the most efficient QD-LEDs …
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Electrical excitation of colloidally synthesized quantum dots in metal oxide structures
… colloidally synthesized quantum dots (QDs) and metal oxides in optoelectronic devices, presents three distinct light emitting devices (LEDs) with metal oxides surrounding a QD active layer, and uses these novel metal oxide based QD-LEDs to study mechanisms for electrical excitation of …
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Development of colloidal quantum dot and lead halide perovskite light emitting devices
… as organic molecules, colloidal quantum dots (QDs) and lead halide perovskites, have emerged as top candidates for light emitting materials. One key feature of these materials is their bandgap tunability, e.g. via size or chemical composition, allowing for their emission color to be turned …
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Physical properties and design of light-emitting devices based on organic materials and nanoparticles
This thesis presents the detailed experimental and theoretical characterization of light-emitting devices (LEDs) based on organic semiconductors and colloidal quantum dots (QDs). This hybrid material system has several advantages over crystalline semiconductor technology; first, it is compatible …
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Physical properties and design of light-emitting devices based on organic materials and nanoparticles
This thesis presents the detailed experimental and theoretical characterization of light-emitting devices (LEDs) based on organic semiconductors and colloidal quantum dots (QDs). This hybrid material system has several advantages over crystalline semiconductor technology; first, it is compatible …
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Efficiency loss mechanisms in colloidal quantum-dot light-emitting diodes
… colloidal quantum-dot light-emitting diodes (QD-LEDs) interesting for the next generation of display and lighting technologies. However, there still remain various hurdles to the commercialization of QD-LEDs, including their relatively low external quantum efficiencies (EQE). In this thesis, …
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Exploring charge carrier dynamics in quantum dot and double heterojunction nanorod light emitting devices using transient electroluminesence measurements
… deposition techniques. Light emitting devices (LEDs) fabricated utilizing these materials have already demonstrated competitive performance with their organic based counter-parts (i.e. OLEDs). One of the more promising nanocrystalline systems to emerge in recent years is the double …
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Light-Matter Interactions in High-Efficiency Photovoltaics, Light-Emitting Devices, and Strongly Coupled Microcavities
… consumption, quantum dot light emitting diodes (QD-LEDs) are a high-efficiency, high color purity, versatile material candidate. Recent efforts to develop heavy metal-free QD-LEDs have led to high external quantum efficiencies in InP- and ZnSebased QDs rivaling the performance of the colloidal …
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Toward data-rich approaches to understanding colloidal semiconductor nanocrystals and quantum-dot LEDs
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Surface and interface engineering in quantum dot and double-heterojunction nanorod light-emitting diodes
Colloidal quantum dots (QDs) have shown to be a promising class of materials for the next generation displays. State-of-the-art QD-LEDs that utilize CdSe-based spherical core/shell (C/S) QDs as the electroluminescent layer have shown efficiencies and brightness that rival the best organic LEDs. One …