Progress of the Ageing Material Evaluation and Studies by Non-Destructive Techniques AMES-NDT Concerted Action

Stegemann, D.; Debarberis, L.; Acosta, Bermudes; Beers, M.; Keinhorst, G.; Coste, Jean-François; Massoud, J.P.; Horsten, M. G.; Kauppinen, Pentti; Pitkänen, Jorma; Kröning, M.; Dobman, G.; Bros, J.; Weimann, H.; Hutchings, M. T.; Rogerson, A.; Briceño, Dolores Gómez; Perosanz, Francisco Javier; Kalkhof, R. D.; Spanner, J.C.

doi:10.1063/1.1302013

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“…The noise measurements can be used in connection with: (i) the estimation of the device reliability; (ii) the selection of reliable devices; (iii) the prediction of device failure; (iv) control and screening in order to provide the expectable device quality and reliability during manufacture; (v) the diagnostics of defects and failures [10][11][12].…”

Section: Reliabilitymentioning

confidence: 99%

Ageing of Cadmium Telluride Radiation Detectors and its Diagnostics with Low Frequency Noise

Andreev

Šik²,

Grmela³

et al. 2013

Metrology and Measurement Systems

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Samples of CdTe single crystals which are used as radiation detectors were periodically measured during a long time interval with different values of an applied voltage. The samples were also periodically exposed during long time periods to high temperatures of 390 K and to rapid changes of temperature from 300 K to 390 K. After 1.5 years of measurements we observed ageing of the samples which resulted in deterioration of their transport characteristics. The resistance of the samples increased significantly and current-voltage characteristics were unstable in time. Noise spectroscopy showed that low frequency noise can be used for detection of CdTe sample ageing as its spectral density increases significantly comparing to the 1/f noise of a high quality sample.

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Section: Reliabilitymentioning

confidence: 99%