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 11 of 11 for “"II-VI-semiconductors"”.
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Towards rational design of peptides for selective interaction with inorganic materials
… In this pursuit, two material groups-II-VI semiconductors and synthetic sapphire (metal oxides)-are chosen as inorganic targets due to their technological relevance and ease of study. First, yeast surface display (YSD) was established as a broadly applicable method for studying …
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Mechanism and Applications of large and persistent photoconductivity in cadmium sulfide
Photoconductivity is the phenomenon where electrical conductivity changes as a result of photoexcitation of new charge carriers. In some semiconductors, photoconductivity is accompanied with enormous conductivity change and long decay time after photoexcitation is ceased. This effect is called …
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Characterization of Organic and Inorganic Optoelectronic Semiconductor Devices Using Advanced Spectroscopic Methods
… properties of organic conjugated molecules, II-VI thin film semiconductors, and vertical cavity surface emitting lasers (VCSEL). Experiments include single photon and two-photon excitation with lasers, with subsequent measurements of the absorption and photoluminescence, as well as …
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Substrate cleaning using a remote hydrogen rf-plasma
… remote rf-hydrogen plasma cleaning of II-VI and silicon semiconductor surfaces was investigated as a preparation for subsequent deposition in molecular beam and gas source molecular beam epitaxy environments. The plasma was characterized using mass spectrometric methods to determine the …
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Engineered biomolecular interactions with inorganic materials : sequence, binding, and assembly
… broadly applicable to probing sequence-activity relationships of peptide-inorganic material surface interactions were developed. A yeast surface display system adapted to liquid-solid interfaces enabled surgical manipulation of sequence through genetic techniques and rapid, semi- …
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Growth and Characterization of Type-II Submonolayer ZnCdTe/ZnCdSe Quantum Dot Superlattices for Efficient Intermediate Band Solar Cells
… obtained for epitaxially grown submonolayer type-II quantum dot superlattices made of II-VI semiconductors. The goal behind this study is to show the feasibility of this novel material system in fabricating an efficient intermediate band solar cell.</p> <p>Intermediate band solar cells can …
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Developing spectroscopic ellipsometry to study II-VI and diluted magnetic semiconductors
… £1 and £1 + .11 band gap energies in ZnSe-based II-VI semiconductors. To remove the natural surface oxide overlayer which distorts the intrinsic dielectric response of the sample, a chemical etching technique using dilute NI40H solution was developed. The successful removal of the oxide overlayer …
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Controlled Lasing in Gallium Nitride Nanowires
… functions simultaneously as an optical microcavity and active medium, leading to an extremely compact and robust laser. Recent advances in nanowire synthesis have enabled realization of optically pumped nanowire lasers in different material systems, including III-V, III-nitride, and II-VI …
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Herstellung von Bauelementen für Spininjektionsexperimente mit semimagnetischen Halbleitern
… Halbleiterheterostrukturen mit semimagnetischen II-VI-Halbleitern hergestellt werden, mit denen Experimente zum Nachweis und der Erforschung der Spininjektion in Halbleiter durchgeführt werden. Hierzu sollten optische und Transportexperimente dienen. Zur Polarisation der Elektronenspins werden …
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Incorporating double-heterojunction in anisotropic semiconductor nanocrystals for novel optoelectronic applications
… colloidal quantum dots (QDs) in future devices. Such heterojunctions incorporated into colloidal nanorods may be especially promising since the inherent shape anisotropy can provide additional benefits of directionality and accessibility in band structure engineering and assembly. Here, we …
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Electro-optic Properties of Semiconductor Nano-crystals And Electro-optic Polymers And Their Applications
… have been used to make various optical devices in the telecommunication field due to several advantages, such as large and fast electro-optic (EO) response. Semiconductor nano-crystals promise even higher response speed due to the unique quantum confinement mechanism, and they also show …