Reliability evaluation method for UV LEDs
2023 20th China International Forum on Solid State Lighting & 2023 9th International Forum on Wide Bandgap Semiconductors (SSLCHINA: IFWS)(2023)
摘要
Compared to traditional mercury UV-light sources, ultraviolet light-emitting diodes (UV LEDs) as a new solid-state ultraviolet light source, has been applied in fields such as disinfection, medical diagnosis, phototherapy, solidification, detection, and sensing due to its many advantages. At present, ultraviolet LED technology has achieved rapid development, in order to predict the lifetime of UV LEDs quickly, analyzing the failure mechanism of UV LEDs and selecting suitable lifetime prediction programmes are of significance importance for improving reliability. Therefore, this article focuses on the accelerated life testing (ALT) and accelerated degradation testing (ADT) based on UV LEDs, summarizes the lifetime prediction methods reported in domestic and foreign literature, introduces the principles and applicable scenarios of different lifetime prediction methods.his article summarizes the lifetime prediction methods of ultraviolet LEDs, and provides reference for the reliability research of UV LEDs.
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