001     37449
005     20200610184747.0
024 7 _ |2 Handle
|a 2128/260
024 7 _ |2 URI
|a 260
037 _ _ |a PreJuSER-37449
088 1 _ |a Juel-4043
088 _ _ |a Juel-4043
|2 JUEL
100 1 _ |0 P:(DE-Juel1)VDB8011
|a Tönnesmann, Andreas
|b 0
|e Corresponding author
|u FZJ
245 _ _ |a Untersuchung von pseudomorphen InGaAs/InAlAs/InP High Electron Mobility Transistoren im Hinblick auf kryogene Anwendungen
260 _ _ |a Jülich
|b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
|c 2003
300 _ _ |a II, 119 p.
336 7 _ |0 PUB:(DE-HGF)11
|2 PUB:(DE-HGF)
|a Dissertation / PhD Thesis
336 7 _ |0 PUB:(DE-HGF)3
|2 PUB:(DE-HGF)
|a Book
336 7 _ |0 2
|2 EndNote
|a Thesis
336 7 _ |2 DRIVER
|a doctoralThesis
336 7 _ |2 BibTeX
|a PHDTHESIS
336 7 _ |2 DataCite
|a Output Types/Dissertation
336 7 _ |2 ORCID
|a DISSERTATION
490 0 _ |0 PERI:(DE-600)2414853-2
|8 13586
|a Berichte des Forschungszentrums Jülich
|v 4043
|x 0944-2952
500 _ _ |a Record converted from VDB: 12.11.2012
502 _ _ |a Aachen, Techn. Hochsch., Diss., 2003
|b Dr. (FH)
|c Techn. Hochsch. Aachen
|d 2003
520 _ _ |a A wide variety of new data communication applications demand ever-increasing transmission capacities. The InGaAs/InAlAs/InP layer stack based High Electron Mobility Transistor (HEMT) is currently regarded as the most promising active device in communication systems as it has the highest cut-off frequencies of all transistor types. Due to reduced phonon scattering of the charge carriers, the HEMT is expected to exhibit even better noise and high frequency characteristics for operations at cryogenic temperatures, for instance in mixers or oscillators located in satellites or ground based systems with appropriate cooling equipment. This work focuses an the reduction of access resistances and the fabrication of very short gate lengths as the biggest technological challenges realizing highest cut-off frequencies at any temperature. In addition, the reproducibility and robustness of the implemented gate technologies are fundamental criteria for applications. In comparison to other transistor designs, the InAlAs/InGaAs HEMTs are stronger affected by undesirable, partly material dependent, short channel effects like early breakdown, high gate currents, impact ionization, the kink effect, and a shift in the threshold voltage. Measurements at liquid nitrogen temperature an transistors produced in this work provide further insight into the poorly understood interrelationship between these effects. At liquid nitrogen temperature, the cut-off frequency of 180 GHz and the maximum oscillation frequency of 300 GHz of short channel transistors at room temperature increase by 20 % and 30 %, respectively, while the breakdown voltage remains at high values above 8 V.
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|2 G:(DE-HGF)
|a Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik
|c I01
|x 0
655 _ 7 |a Hochschulschrift
|x Dissertation (FH)
856 4 _ |u https://juser.fz-juelich.de/record/37449/files/Juel_4043_Toennesmann.pdf
|y OpenAccess
909 C O |o oai:juser.fz-juelich.de:37449
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913 1 _ |0 G:(DE-Juel1)FUEK252
|b Information
|k I01
|l Informationstechnologie mit nanoelektronischen Systemen
|v Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik
|x 0
914 1 _ |a Nachtrag
|y 2003
915 _ _ |0 StatID:(DE-HGF)0510
|2 StatID
|a OpenAccess
920 1 _ |0 I:(DE-Juel1)VDB41
|d 31.12.2006
|g ISG
|k ISG-1
|l Institut für Halbleiterschichten und Bauelemente
|x 0
970 _ _ |a VDB:(DE-Juel1)46046
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980 _ _ |a I:(DE-Juel1)PGI-9-20110106
980 _ _ |a UNRESTRICTED
980 _ _ |a FullTexts
980 1 _ |a FullTexts
981 _ _ |a I:(DE-Juel1)PGI-9-20110106


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