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Research Paper | Physics | India | Volume 12 Issue 9, September 2023 | Rating: 5.4 / 10
Fabrication & Test of Semiconductor Nanorods based Field Emitters for Applications in Advanced Sensors
Dhruva Jindal
Abstract: In this particular study, the field emitters are fabricated using Zinc oxide (ZnO), a wideband gap semiconductor with a high excitonic binding energy. The nanorods of ZnO are grown through the chemical vapor deposition (CVD) technique, utilizing optimized growth parameters. This growth method ensures the production of uniform nanorods that are approximately vertically aligned on a heavily doped silicon substrate. The resulting nanorod arrays exhibit exceptional structural integrity and morphology, as confirmed by electron microscopy analysis. The nanorods' high crystallinity, essential for optimal performance, is also confirmed through X - ray spectroscopy. The grown nanorods demonstrate excellent field emission properties with a turn - on electric field of approximately 4.5 V/micrometer, indicating their ability to emit electrons at relatively low voltages. Moreover, the observed current density of around 12 microampere/cm2 underscores the nanorods' efficient electron emission capabilities. The experimental results obtained from the field emission characterization of the grown nanorods hold immense potential for revolutionizing photonics - based sensors and devices.
Keywords: Nanorods, Field Emitters, Zinc Oxide semiconductor, Chemical Vapor Deposition, Nanotechnology
Edition: Volume 12 Issue 9, September 2023,
Pages: 1596 - 1600