Sökning: "resonant tunneling diodes"

Visar resultat 6 - 10 av 14 avhandlingar innehållade orden resonant tunneling diodes.

1. 6. Experimental and theoretical study of quantum dot resonant tunneling diodes for single photon detection

   Författare :Ying Hou; Ying Fu; KTH; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Single photon detection has a broad application in the medical, telecommunication, as well as in infrared imaging fields. In this thesis I present my work in studying quantum dot (QD) resonant tunneling diodes (RTD) for single photon detection. The device was processed in the form of a free-standing small-area air bridge. LÄS MER

3. 7. Vertical III-V Semiconductor Devices

   Författare :Tomas Bryllert; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Halvledarfysik; Semiconductory physics; heterostructure barrier varactor frequency multiplier; field effect transistor; resonant tunneling; artificial molecule; terahertz; nanowire; Quantum dots;

   Sammanfattning : This thesis is based on three projects that deal with vertical III-V semiconductor devices. The work spans over basic research as well as more applied aspects of III-V semiconductor technology. All projects have in common that they rely on advanced epitaxial growth to form the starting material for device fabrication. LÄS MER

4. 8. Electrical Characterization of Silicon Nanogaps

   Författare :Jonas Berg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic molecules; Molecular electronics; Surface leakage currents; Low-frequency noise; Soft breakdown; TSRAM; Resonant tunneling diodes; Selective etching; Silicon nanogaps; Nanocontacts;

   Sammanfattning : We have designed and manufactured silicon nanogaps aimed at electrically interfacing molecules, utilizing the precision thickness control in an oxidation process. An insulating layer was formed on a silicon wafer, and then polysilicon was deposited on top. LÄS MER

5. 9. Epitaxial Growth, Processing and Characterization of Semiconductor Nanostructures

   Författare :Magnus Borgström; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum transport; resonant tunneling diodes; relativity; quantum mechanics; statistical physics; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; gravitation; statistisk fysik; termodynamik; classical mechanics; Mathematical and general theoretical physics; whiskers; ultra high vacuum chemical vapor deposition; RTD; self assembled quantum dots; semiconducting III-V materials; nanowires; metalorganic vapor phase epitaxy; MOVPE; nanostructures; AFM; Atomic force microscopy; InAs; Fysicumarkivet A:2003:Borgström;

   Sammanfattning : This thesis deals with the growth, processing and characterization of nano-sized structures, eg., self-assembled quantum dots and nano-wires. LÄS MER

7. 10. Silicon nanogaps: An electronic bridge to the molecular world

   Författare :Jonas Berg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocrystals; TSRAM; Silicon nanogaps; Molecular electronics; Selective etching; Resonant Tunneling Diodes; Molecules;

   Sammanfattning : We have designed and manufactured silicon nanogaps aimed at electrically interfacing molecules, utilizing the precision thickness control in an oxidation process. An insulating layer was formed on a silicon wafer, and then polysilicon was deposited on top. LÄS MER