000165623 001__ 165623 000165623 005__ 20260112132217.0 000165623 0247_ $$2doi$$a10.1007/s10909-025-03361-9 000165623 0248_ $$2sideral$$a147266 000165623 037__ $$aART-2026-147266 000165623 041__ $$aeng 000165623 100__ $$0(orcid)0000-0001-7289-5649$$aCamón, A. 000165623 245__ $$aDevelopment of Cryogenic X-Ray Detectors Based on Mo/Au TES 000165623 260__ $$c2026 000165623 5060_ $$aAccess copy available to the general public$$fUnrestricted 000165623 5203_ $$aTransition edge sensors (TESs) have emerged as highly sensitive radiation detectors with applications ranging from astrophysics to materials science. In the framework of the Athena X-ray space telescope, we have developed Mo/Au-based TES devices designed to meet the ESA specifications for the X-IFU instrument. The detectors were fabricated using a Mo/Au/Au trilayer process and characterized in a dilution refrigerator using a SQUID readout. From I to V curves and complex impedance measurements, we extracted the electrothermal parameters of the TES, which are consistent with theoretical models. Noise spectra were analyzed to estimate the energy resolution, and an excess noise factor was obtained from the comparison of theoretical and experimental data. A spectral resolution below 4 eV was achieved for 5.9 keV X-rays from a 55 Fe source. 000165623 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S$$9info:eu-repo/grantAgreement/ES/DGA/E09-23R$$9info:eu-repo/grantAgreement/ES/MCIU/PID2024-155779OB-C32$$9info:eu-repo/grantAgreement/ES/MICINN/MATRANS-42$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122955OB-C42$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S 000165623 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es 000165623 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000165623 700__ $$aFàbrega, L. 000165623 700__ $$0(orcid)0000-0002-5457-3694$$aPobes, C. 000165623 700__ $$aStrichovanec, P. 000165623 700__ $$0(orcid)0000-0003-4068-127X$$aBolea, J. 000165623 700__ $$aRico-Camacho, J. I. 000165623 700__ $$aGarcía-Palacios, J. L. 000165623 773__ $$g222 (2026), 27 [11 pp.]$$pJ. low temp. phys.$$tJournal of Low Temperature Physics$$x0022-2291 000165623 8564_ $$s2219015$$uhttps://zaguan.unizar.es/record/165623/files/texto_completo.pdf$$yVersión publicada 000165623 8564_ $$s1249347$$uhttps://zaguan.unizar.es/record/165623/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000165623 909CO $$ooai:zaguan.unizar.es:165623$$particulos$$pdriver 000165623 951__ $$a2026-01-12-11:11:26 000165623 980__ $$aARTICLE