Impact of high ionizing dose on high-power white LEDs
| Autor: | Allanche, T, Paillet, Philippe, Duhamel, O, Goiffon, V, Rousson, J, Baudu, J-P, Macé, J-R, Desjonqueres, Hortense, Monsanglant Louvet, Celine, Ouerdane, Y, Boukenter, A, Girard, S |
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| Přispěvatelé: | Laboratoire Hubert Curien (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), OPTSYS, ORANO, Laboratoire d'expérimentations sur le comportement des équipements et la ventilation (IRSN/PSN-RES/SCA/LECEV), Service du Confinement et de l'Aérodispersion des polluants (IRSN/PSN-RES/SCA), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), ANR PIA ANDRA - CAMRAD, IRMA, BOREE |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | RADOPT 2021 RADOPT 2021, Nov 2021, Saint-Etienne, France |
| Popis: | National audience; Visible cameras operating at 1 MGy of g radiation require radiation tolerant illumination system. Here, commercially available high-power white LEDs have been tested under X and g radiations. The light power of white commercial LED was shown to slightly decrease (less than 10 %) in post irradiation measurements. A closer analysis, based on the ABC model for efficiency droop, reveals that irradiation essentially increases the amount of trap assisted recombination, impacting the LED quantum efficiency mostly at low supply voltage. This suggests that favoring the LED operation at higher supply voltage could be a good strategy to enhance the radiation hardness of LED-based illumination systems. |
| Databáze: | OpenAIRE |
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