165623 20260112132217.0 doi 10.1007/s10909-025-03361-9 sideral 147266 ART-2026-147266 eng Camón, A. (orcid)0000-0001-7289-5649 Development of Cryogenic X-Ray Detectors Based on Mo/Au TES 2026 Transition edge sensors (TESs) have emerged as highly sensitive radiation detectors with applications ranging from astrophysics to materials science. In the framework of the Athena X-ray space telescope, we have developed Mo/Au-based TES devices designed to meet the ESA specifications for the X-IFU instrument. The detectors were fabricated using a Mo/Au/Au trilayer process and characterized in a dilution refrigerator using a SQUID readout. From I to V curves and complex impedance measurements, we extracted the electrothermal parameters of the TES, which are consistent with theoretical models. Noise spectra were analyzed to estimate the energy resolution, and an excess noise factor was obtained from the comparison of theoretical and experimental data. A spectral resolution below 4 eV was achieved for 5.9 keV X-rays from a 55 Fe source. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S info:eu-repo/grantAgreement/ES/DGA/E09-23R info:eu-repo/grantAgreement/ES/MCIU/PID2024-155779OB-C32 info:eu-repo/grantAgreement/ES/MICINN/MATRANS-42 info:eu-repo/grantAgreement/ES/MICINN/PID2021-122955OB-C42 info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Fàbrega, L. Pobes, C. (orcid)0000-0002-5457-3694 Strichovanec, P. Bolea, J. (orcid)0000-0003-4068-127X Rico-Camacho, J. I. García-Palacios, J. L. 222 (2026), 27 [11 pp.] J. low temp. phys. Journal of Low Temperature Physics 0022-2291 2219015 http://zaguan.unizar.es/record/165623/files/texto_completo.pdf Versión publicada 1249347 http://zaguan.unizar.es/record/165623/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:165623 articulos driver 2026-01-12-11:11:26 ARTICLE