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Detection in the contacts with bismuth-antimony alloy when the surface states are in dynamic regime

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dc.contributor.author KERNER, Iacov
dc.date.accessioned 2019-11-05T14:04:06Z
dc.date.available 2019-11-05T14:04:06Z
dc.date.issued 2011
dc.identifier.citation KERNER, Iacov. Detection in the contacts with bismuth-antimony alloy when the surface states are in dynamic regime. In: Microelectronics and Computer Science: proc. of the 7th intern. Conf., September 22-24, 2011. Chişinău, 2011, vol. 1, pp. 37-40. ISBN 978-9975-45-174-1. en_US
dc.identifier.isbn 978-9975-45-174-1
dc.identifier.uri http://repository.utm.md/handle/5014/6136
dc.description.abstract Diode detectors (DD) are widely used in electronic information and communication systems. In this paper the numerical modeling of the electrical potential distribution and current passing in the contacts of niobium nitride (NbN) with semiconductor alloy bismuth-antimony (Bi-Sb) was made. Earlier we studied situation when the surface states had time to recharge with applied electric voltage (a “static” regime). In this article an opposite situation is studied, when the surface states have no time to recharge with applied electric voltage (a “dynamic” regime). There were analyzed possibilities to create the diode detectors based on these contacts and working at liquid helium temperatures 4.2 K and 1 K. The dependences of the current responsivity (CR), the voltage responsivity (VR) and the noise equivalent power (NEP) on the signal frequency (f) were analyzed. The obtained results were compared with literature data. Both DD working at temperature of liquid nitrogen (T = 77.4 K) and liquid helium were considered. The comparison with existent literature data shows the proposed DD can be 10100 times better. The physical reasons of these advantages were discussed. It is shown that unique properties of Bi-Sb alloys and especially of Bi0.88Sb0.12 alloy make these alloys to be the very perspective materials for cryoelectronics. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject Schottky diodes en_US
dc.subject diodes en_US
dc.subject superconductivity en_US
dc.title Detection in the contacts with bismuth-antimony alloy when the surface states are in dynamic regime en_US
dc.type Article en_US


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