Browsing Conferinţe by Author "HARTNAGEL, H. L."

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  • Ballistic Charge Carrier Devices for Terahertz 
    HARTNAGEL, H. L. (Technical University of Moldova, 2011)
    It is of great interest, to produce light-weight Terahertz sources for the many appl ications such as security testing. By reducing the transit distance suitably, the charge carrier can be approximately ballistic, that is ...
  • Enhanced efficiency of p-GaN/n-ZnO light-emitting diodes by using NiO and ZnSe interlayers 
    SIRKELI, V. P.; YILMAZOGLU, O.; KÜPPERS, F.; HARTNAGEL, H. L. (Technical University of Moldova, 2015)
    We report the results from numerical simulations of p-GaN/n-ZnO light-emitting diodes (LEDs) with different architectures. p-GaN/n-ZnO, p-GaN/p-NiO/n-ZnO, and p-GaN/p-NiO/n-ZnSe/n-ZnO LED structures have been examinated ...
  • Recent Progress in GaN-based Devices for Terahertz Technology 
    SIRKELI, V. P.; TIGINYANU, I. M.; HARTNAGEL, H. L. (Tehnica UTM, 2019)
    This paper reviews the crystal growth, basic properties, and principle of operation of III-nitride based terahertz devices. We provide a brief history and current status of crystal growth of polar and non-polar GaN-based ...
  • ZnO-based Quantum Structures for Terahertz Sources 
    SIRKELI, V. P.; HARTNAGEL, H. L.; YILMAZOGLU, O.; PREU, S. (Tehnica UTM, 2019)
    In this paper we report on the numerical study of the terahertz devices based on metal oxide semiconductors and its application in biology and medicine. We also report on the recent progress of the theoretical and experimental ...

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