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Showing 1 to 20 of 43 for “"Cadmium Selenide"”.
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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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Photophysics of cadmium selenide quantum dot solids
… charge separation, and transport in cadmium selenide colloidal quantum dots. The electronic states and optical absorption cross-section are found to be less sensitive to changes in the dielectric environment than predicted from theory unless screening from the ligand shell is taken …
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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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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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Structural and optical properties of small cadmium selenide nanocyrstallites
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Synthesis and characterization of cadmium selenide and zinc selenide nanoparticles
… synthetic route has been used to synthesize cadmium selenide and zinc selenide nanoparticles. Both aqueous and organically soluble selenide based nanoparticles have been synthesized via mild conditions. The synthesis involved the reduction of selenium powder to produce selenium ions. The …
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Luminescence of Cadmium Selenide and Cadmium-Sulfide and the Influence of Defects
Made available in DSpace on 2014-12-10T19:06:58Z (GMT). No. of bitstreams: 1 7219789.pdf: 5537007 bytes, checksum: fd1876ee39bf9d8d6b4ed0f50eb72ce8 (MD5) Previous issue date: 1972
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The electronic and optical properties of close packed cadmium selenide quantum dot solids
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Experimental Interrogation Of One-Dimensional Excitons In Cadmium Selenide And Cadmium Telluride Quantum Nanostructures
<p>The lengths of one-dimensional quantum wires: QWs) make them excellent candidates for implementation into devices that require charge transport over micrometer-scale distances. Additionally, their tunable band-gap energies, polarized emission, and large absorption cross sections make them quite …
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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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Studies on the Preparation and Luminescence Properties of Cadmium Selenide Quantum Dots, Their Immobilization, and Applications.
… by the presence of at least one electron. Cadmium selenide quantum dots were synthesized via colloidal synthesis. Contrary to previous preparations, more focus was placed on the temperature rather than the duration of time at which they form. A series of colored solutions were obtained …
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Fabrication and characterization of hybrid organic/inorganic electroluminescent devices based on cadmium selenide nanocrystallites (quantum dots)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1997.
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The Effects of High Pressure on The Photovoltage Spectrum of Cadmium-Sulfide and Cadmium-Selenide Schottky Diodes
The effects of high pressure to 10 kilobars on the photovoltage spectrum of CdS and CdSe Schottky diodes has been investigated. These diodes exhibit a photovoltage at photon energies less than the energy gap of the semiconductor. This photovoltage is due to excitation of electrons from interface …
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Study of Immobilizing Cadmium Selenide Quantum Dots in Selected Polymers for Application in Peroxyoxalate Chemiluminescence Flow Injection Analysis
<p>Two batches of CdSe QDs with different sizes were synthesized for immobilizing in polyisoprene (PI), polymethylmethacrylate (PMMA), and low-density polyethylene (LDPE). The combinations of QDs and polymer substrates were evaluated for their analytical fit-for-use in applicable immunoassays. …
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Photoluminescence Spectra and Carrier Lifetime Measurements in Cadmium Selenide, Gallium Arsenide and Gallium - Arsenide(1-X) - Phosphide(x)
Made available in DSpace on 2014-12-10T19:06:38Z (GMT). No. of bitstreams: 1 7114826.pdf: 3009405 bytes, checksum: fcd9c2de26664cbb7ca797d09fe6c0a8 (MD5) Previous issue date: 1970
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Semiconductor nanocrystal colloids : manganese doped cadmium selenide, (core)shell composites for biological labeling, and highly fluorescent cadmium telluride
This thesis describes the characterization and applications of nanometer sized semiconductor (or quantum dot) colloids produced by chemical means. The nanocrystals are synthesized by pyrolysis of organometallic precursors in the coordinating solvent trioctylphosphine oxide (TOPO). The important …
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Hierarchical self-assembly of nanoparticles using reversible addition-fragmentation chain-transfer block copolymers
The hierarchical self-assembly of cadmium based quantum dots through the use of RAFT block copolymers have been investigated. The formation of cadmium selenide quantum dots within the core of tetrablock RAFT copolymers in three different solvents, dioxane, THF and DMF was investigated …
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Optical and Electronic Interactions at the Nanoscale
… optically-excited carrier relaxation dynamics of cadmium selenide quantum dots due to a surface treatment previously shown to increase interparticle coupling, namely the solution exchange of native, aliphatic ligands for thiocyanate followed by subsequent sample annealing. We find that this ligand …
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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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