TY - CONF AU - Hajenius, M. AU - Baselmans, J. J. A. AU - Gao, J. R. AU - Klapwijk, T. M. AU - de Korte, P. A. J. AU - Voronov, B. AU - Gol’tsman, G. PY - 2003 DA - 2003// TI - Improved NbN phonon cooled hot electron bolometer mixers T2 - Proc. 14[super:th] Int. Symp. Space Terahertz Technol. BT - Proc. 14[super:th] Int. Symp. Space Terahertz Technol. SP - 413 EP - 423 CY - Tucson, USA KW - NbN HEB mixers AB - NbN phonon-cooled hot electron bolometer mixers (HEBs) have been realized with negligible contact resistance to Au pads. By adding either a 5 nm Nb or a 10 nm NbTiN layer between the Au and NbN, to preserve superconductivity in the NbN under the Au contact pad, superior noise temperatures have been obtained. Using DC I,V curves and resistive transitions in combination with process parameters we analyze the nature of these improved devices and determine interface transparencies. UR - https://www.nrao.edu/meetings/isstt/2003.shtml N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=337), last updated on Tue, 18 May 2021 18:15:53 -0500 ID - Hajenius_etal2003 ER -