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Triple-barrier resonant tunneling diodes for mobile THz emission and sensitive zero-bias detection
Coherent, compact design, and battery-operated signal sources and sensitive signal detectors operating in the THz-frequencies are currently subject of intense research. Within this work, a promising solution that is suitable to fulfill these requirements is investigated. Therefore, for a compact design and low power consumption operation, a novel device structure is developed. By enhancing the double barrier resonant tunneling diode material system with a third barrier a new zero-bias detection capability is added, while maintaining the known de-attenuation functionality of a resonant tunneling device. Providing one device that depending on its bias point, can rectify or generate signals in the sub- and THz range. Furthermore, during this work a novel subharmonic signal injection locking method is developed to overcome the major challenge of coherent THz signal source, which is the output signal phase and frequency control. A wireless signal injection approach has been developed to isolate the injection signal source and the THz signal emitter. In addition, the wireless signal injection concept is well suited for heterogeneous integration of both signal sources achieving a compact THz signal source, especially for array-based integration. Within this work a new material stack design improved the maximum current density from 200 up to 900 kA/cm2. The characterization and fabrication flow are established and enhanced. Further, a novel low-cost solution for small-area devices via soft-UV nano-imprint mechanisms is developed. For characterization and modeling of single devices, on-wafer DC and scattering parameter measurements were carried out. Different commercial electromagnetic simulators were used to design and characterize the antennae. Monolithic integration technology of the characterized triple barrier resonant tunneling diode into a slotantenna for oscillator and detector operation, and the integration into a self-complementary bowtie antenna for broadband detection are developed and successful operated for ...
Triple-barrier resonant tunneling diodes for mobile THz emission and sensitive zero-bias detection
Coherent, compact design, and battery-operated signal sources and sensitive signal detectors operating in the THz-frequencies are currently subject of intense research. Within this work, a promising solution that is suitable to fulfill these requirements is investigated. Therefore, for a compact design and low power consumption operation, a novel device structure is developed. By enhancing the double barrier resonant tunneling diode material system with a third barrier a new zero-bias detection capability is added, while maintaining the known de-attenuation functionality of a resonant tunneling device. Providing one device that depending on its bias point, can rectify or generate signals in the sub- and THz range. Furthermore, during this work a novel subharmonic signal injection locking method is developed to overcome the major challenge of coherent THz signal source, which is the output signal phase and frequency control. A wireless signal injection approach has been developed to isolate the injection signal source and the THz signal emitter. In addition, the wireless signal injection concept is well suited for heterogeneous integration of both signal sources achieving a compact THz signal source, especially for array-based integration. Within this work a new material stack design improved the maximum current density from 200 up to 900 kA/cm2. The characterization and fabrication flow are established and enhanced. Further, a novel low-cost solution for small-area devices via soft-UV nano-imprint mechanisms is developed. For characterization and modeling of single devices, on-wafer DC and scattering parameter measurements were carried out. Different commercial electromagnetic simulators were used to design and characterize the antennae. Monolithic integration technology of the characterized triple barrier resonant tunneling diode into a slotantenna for oscillator and detector operation, and the integration into a self-complementary bowtie antenna for broadband detection are developed and successful operated for ...
Triple-barrier resonant tunneling diodes for mobile THz emission and sensitive zero-bias detection
Arzi, Khaled (author) / Tegude, Franz-Josef
2020-07-08
Theses
Electronic Resource
English
| British Library Online Contents | 2003
| British Library Online Contents | 2002
Triangular double barrier resonant tunneling
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