Speakers
Description
This study presents the micro-manufacturing process and radio frequency (RF) evaluation of a Metal-Semiconductor-Metal (MSM) type photodetector, utilizing reduced graphene oxide (rGO) decorated with nickel nanoparticles as the photosensitive material for light detection. The photodetector was initially designed with a Ground-Signal-Ground (G-S-G) configuration to determine the spacing between these elements. The microfabrication process followed, including electron lithography, rGO deposition via the Langmuir-Blodgett method, and component metallization. During this stage, scanning electron microscope (SEM) micrographs were produced to verify the correct application of the nanomaterial and examine the details of the photodetector's manufacturing process. Finally, the RF characteristics were evaluated using a vector network analyzer (VNA) alongside a 1550 nm optical stimulus to determine the scattering parameters (S parameters) in terms of reflection (S11) and transmission (S21). These devices can be integrated into microwave systems, both passive and active, for control through optical excitation.
Reference
R. Hui, “Photodetectors,” in Introduction to Fiber-Optic Communications, First., India: Academic Press, 2020, pp. 125–154.
This work was supported by
Secretaría de Investigación y Posgrado del Instituto Politécnico Nacional por el apoyo brindado mediante el proyecto SIP-20240691
| Keywords | Langmuir-Blodgett method, Metal-Semiconductor-Metal (MSM), photodetector, optical, microfabrication |
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| Author approval | I confirm |
| Author will attend | I confirm |
