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 20 of 325 for “"N-Type"”.
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n-type silicon-germanium based terahertz quantum cascade lasers
Terahertz quantum cascade lasers (THz QCLs) have many potential applications, including detection of skin tumours, and of illicit drugs and explosives. To date, all THz QCLs use III–V compound semiconductors, but silicon (Si)-based devices could offer significant benefits. The high thermal …
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Ohmic Contacts to N -Type Gallium Nitride Based Semiconductors
In this work, the development and characterization of electrical and materials performance of ohmic contacts are presented. Surface treatment techniques were developed to improve the electrical characteristics of ohmic contacts. Ti/Al/Mo/Au metallization scheme was developed to form ohmic contacts …
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Steady state and transient photoconductivity in n-type amorphous silicon
… out on samples of glow-discharge produced n-type a-Si:H from two sources, lightly doped with phosphorus and arsenic respectively.<br/><br/>The data from the short time TPC, measured as a function of excitation density are consistent with multiple trapping and saturation of the trap states …
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Internal Friction in Intrinsic and N-Type Germanium and Silicon
Made available in DSpace on 2014-12-12T01:04:10Z (GMT). No. of bitstreams: 1 7414539.pdf: 3298819 bytes, checksum: 7ef8913ac39026a4ff1114008433b136 (MD5) Previous issue date: 1974
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An Investigation of the Surface States on N-Type Germanium
Made available in DSpace on 2014-12-04T21:03:00Z (GMT). No. of bitstreams: 1 5801737.pdf: 2964299 bytes, checksum: 7d733c75ec8e0e8fd5ce6f650a297430 (MD5) Previous issue date: 1958
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Optical absorption associated with grain boundaries in n-type germanium
… from similar structural features in the two types of grain boundary.
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Raman Scattering From Electronic Excitations in N-Type 6h Silicon Carbide
Made available in DSpace on 2015-05-12T22:38:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7206899.PDF: 4442280 bytes, checksum: f544059df63dc066eb018439233edfe2 (MD5) Previous issue date: 1971
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Modeling and Electrical Characterization of Ohmic Contacts on n-type GaN
As the current requirements of power devices are moving towards high frequency, high efficiency and high-power density, Silicon-based devices are reaching its limits which are instigating the need to move towards new materials. Gallium Nitride (GaN) has the potential to meet the growing demands due …
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Self-Organizing n-type Perylene Derivatives for Organic Photovoltaics – Synthesis, Characterization and Application
Diese Dissertation beschäftigt sich mit der maßgeschneiderten Synthese und der Charakterisierung verschiedener selbst organisierender Perylenderivate als n-Typ Halbleiter-Farbstoff zur Anwendung in organischen Photovoltaik-Bauelementen. Dabei liegt der Schwerpunkt auf zwei unterschiedlichen …
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N-type doping of organic thin films using a novel class of dopants
I present a new approach to stable n-type doping of organic matrices using organic dopants. In order to circumvent stability limitations of strong organic donors, I produce the donor from a stable precursor compound in situ. As an example, the cationic dye pyronin B chloride is studied as a dopant …
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