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 14 of 14 for “"cadmium selenide(CdSe)"”.
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Photophysics of cadmium selenide (CdSe) semiconductor nanocrystals
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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Stark spectroscopy of cadmium Selenide (CdSe) nanocrystallites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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Interactions of cadmium selenide (CdSe) quantum dots with coagulant proteins extracted from Moringa oleifera seeds
… to investigate the interaction mechanism between Cadmium selenide (CdSe) quantum dots (QDs) and Moringa oleifera seeds coagulant protein (MOCP), CdSe QDs with hexagonal phase and crystalline size of 3.1-8.1 nm were synthesized in presence of organic solvent Trioctyl-n-phosphine oxide (TOPO) and …
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Measurement and assignment of the size-dependent optical spectrum in cadmium selenide (CdSe) quantum dots
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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A quantum dot heterojunction photodetector
… component. We implement a thin film of cadmium selenide (CdSe) quantum dot sensitizers, sandwiched between an electron-transporting titanium dioxide (TiO2) layer and a hole-transporting N,N' diphenyl-N,N' bis(3-ethylphenyl)-(1,1'-biphenyl)- 4,4'-diamine (TPD) organic small molecule …
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Novel II-IV semiconductor nanocrystal gain media : from amplified spontaneous emission to lasing
This thesis details efforts in using cadmium selenide (CdSe) nanocrystallites (NCs) as a novel lasing media. We begin with the synthesis of polymer/NC composites, in which the NCs are stabilized within a long-chain methacrylate polymer. This chapter serves to highlight the processing flexibility …
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Fabrication and characterization of quantum-confined optoelectronic devices based on CdSe nanocrystals
… the development of synthetic methods to produce cadmium selenide (CdSe) QDs with very controlled size-distributions and high crystalline quality, their potential applications in a variety of fields are being extensively explored. In this thesis, I present a simple chemical approach to greatly …
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Colloidal Semiconductor Nanocrystals: A Study of the Syntheses of and Capping Structures for CdSe
… case under investigation, the nano-particles are cadmium-selenide (CdSe), though they can be made from cadmium-sulfide, cadmium-telluride or a number of other II-VI and III-V material combinations. The CdSe quantum dots emit visible light at a repeatable wavelength when excited by an ultraviolet …
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Increased Functionality Porous Optical Fiber Structures
… using dip coating techniques. Quantum dots of Cadmium Selenide (CdSe) with particle sizes of ranging from 2- 10 nm were deposited in the stochastic ordered hole fibers. SEM and EDS analysis confirm that copper, polymer materials, and quantum dots were deposited in the pore structure and on the …
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High open-circuit voltage in heterojunction photovoltaics containing a printed colloidal quantum-dot photosensitive layer
… methods, we deposit a layer of colloidal cadmium selenide (CdSe) quantum dots (QDs) onto a wide band-gap organic hole-transporting thin film of N,N'-bis(3-methylphenyl)-N,N'-bis-(phenyl)-9,9-spirobiuorene (spiro-TPD) in order to form a unique planar heterojunction photovoltaic device. This …
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Synthesis of Cadmium Selenide Quantum Dots and Their Cytotoxicity
Cadmium selenide (CdSe) nanoparticles (NPs) have applications in biomedical, biochemistry, bioimaging areas through different methods such as cell labelling and drug delivery (Chapter1). This study aims to test the optical and biological properties of CdSe NPs so that its applications can be …
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Microchemical systems for the synthesis of nanostructures : quantum dots
… which are important reaction parameters of cadmium selenide (CdSe) QD growth, had no significant impact. We also synthesized larger (>3.2 nm) InP QDs with a sequential injection microreactor consisting of 6 sequential alternative monomer injections similar to the successive ion layers …
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Charge and energy transport in 0D/2D systems probed using linear and nonlinear spectroscopy
… efficient F6rster resonant energy transfer from cadmium selenide (CdSe) quantum dots to monolayer and few-layer molybdenum disulfide (MoS₂). The quenching of the donor quantum dot photoluminescence increases as the MoS 2 flake thickness decreases with the highest efficiency (> 95%) observed for …
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Investigation on nanostructured solar cells
… nanoparticle size rather than the phase. CdS and CdSe layers were deposited on the TiO2 network prepared from thus-synthesized TiO2 nanoparticles and their effects on the performance of solar cells were investigated. A CdS underlayer was beneficial for the solar cells in all respects because it …