Academic Journal
Impact of Gamma Radiation on Dynamic RDSON Characteristics in AlGaN/GaN Power HEMTs
| العنوان: | Impact of Gamma Radiation on Dynamic RDSON Characteristics in AlGaN/GaN Power HEMTs |
|---|---|
| المؤلفون: | Martínez, Pedro J., Maset Sancho, Enrique, P. Martín-Holgado, Morilla, Yolanda, Sanchis Kilders, Esteban, Gilabert Palmer, David |
| المصدر: | Martínez, P.J.; Maset, E.; Martín-Holgado, P.; Morilla, Y.; Gilabert, D.; Sanchis-Kilders, E. Impact of Gamma Radiation on Dynamic RDSON Characteristics in AlGaN/GaN Power HEMTs. Materials 2019, 12, 2760. https://doi.org/10.3390/ma12172760 |
| سنة النشر: | 2023 |
| المجموعة: | Universitat de València: Roderic - Repositorio de contenido libre |
| مصطلحات موضوعية: | electrònica, física, electrònica materials, high-electron-mobility transistor (HEMT), gallium nitride (GaN), radiation hardness, assurance testing, radiation effects, total ionizing dose (TID) |
| الوصف: | GaN high-electron-mobility transistors (HEMTs) are promising next-generation devices in the power electronics field which can coexist with silicon semiconductors, mainly in some radiation-intensive environments, such as power space converters, where high frequencies and voltages are also needed. Its wide band gap (WBG), large breakdown electric field, and thermal stability improve actual silicon performances. However, at the moment, GaN HEMT technology suffers from some reliability issues, one of the more relevant of which is the dynamic on-state resistance (RON_dyn) regarding power switching converter applications. In this study, we focused on the drain-to-source on-resistance (RDSON) characteristics under 60Co gamma radiation of two different commercial power GaN HEMT structures. Different bias conditions were applied to both structures during irradiation and some static measurements, such as threshold voltage and leakage currents, were performed. Additionally, dynamic resistance was measured to obtain practical information about device trapping under radiation during switching mode, and how trapping in the device is affected by gamma radiation. The experimental results showed a high dependence on the HEMT structure and the bias condition applied during irradiation. Specifically, a free current collapse structure showed great stability until 3.7 Mrad(Si), unlike the other structure tested, which showed high degradation of the parameters measured. The changes were demonstrated to be due to trapping effects generated or enhanced by gamma radiation. These new results obtained about RON_dyn will help elucidate trap behaviors in switching transistors. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | Materials, 2019, vol. 12, num. 17, p. 1-15; https://hdl.handle.net/10550/91370; 140103 |
| DOI: | 10.3390/ma12172760 |
| الاتاحة: | https://hdl.handle.net/10550/91370 https://doi.org/10.3390/ma12172760 |
| Rights: | open access |
| رقم الانضمام: | edsbas.2B7A42EA |
| قاعدة البيانات: | BASE |
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