التفاصيل البيبلوغرافية
| العنوان: |
NEA surface AlGaN heterojunction tilted nanowire array photocathode for vacuum electron sources |
| المؤلفون: |
Xingyue Zhangyang, Lei Liu, Hongchang Cheng, Feifei Lu, Xin Guo, Jian Tian |
| المصدر: |
Journal of Materials Research and Technology, Vol 23, Iss , Pp 2177-2188 (2023) |
| بيانات النشر: |
Elsevier, 2023. |
| سنة النشر: |
2023 |
| المجموعة: |
LCC:Mining engineering. Metallurgy |
| مصطلحات موضوعية: |
AlGaN, Nanowires, Solar-blind, Photocathode, Photoelectron emission, Mining engineering. Metallurgy, TN1-997 |
| الوصف: |
As the core component of the electron accelerator, the electron source is responsible for providing high-quality electron beams. GaN has a wide bandgap and must be driven by an ultraviolet laser, making it a strong candidate for photocathode electron source research. We established a theoretical model of photoemission for field-assisted negative electron affinity (NEA) AlGaN heterojunction tilted nanowire array photocathodes. The top-down built-in electric field facilitated the transport of photogenerated carriers within the nanowire. The inclination of the nanowires effectively improved the quantum efficiency of the photocathode. With the critical angle of incidence of ultraviolet, the quantum efficiency was up to 81.2%, and the collection efficiency was up to 51%. This work could provide theoretical support for the design and fabrication of high-quality photocathode electron sources. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2238-7854 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2238785423001461; https://doaj.org/toc/2238-7854 |
| DOI: |
10.1016/j.jmrt.2023.01.144 |
| URL الوصول: |
https://doaj.org/article/fb9d9b3137154200b9a5a13e3f046912 |
| رقم الانضمام: |
edsdoj.fb9d9b3137154200b9a5a13e3f046912 |
| قاعدة البيانات: |
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