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Preparation of Porous Silicon Photodetector Enhanced by Ag Nanoparticle to Protect Medical Personnel Ahmed Ahmed S.* Department of Medical Science, College of Nursing, Misan University, Iraq *Corresponding author: Ahmed S. Ahmed. Department of medical science, College of Nursing, Misan University, Iraq, E-mail: Ahmedshihab@uomisan.edu.iq.
Online published on 27 November, 2019. Abstract This work investigation the effect of Ag nanoparticle to improvement the sensitivity of photodetector. Porous silicon prepared with photoelectrochemical etching by using n-type silicon substrate. To increase the efficiency of detection deposited the Ag nanoparticle on porous silicon surface by annealing process. SEM and AFM technique were used to study the morphological characteristics of the PSi surface. Dark and photo current-voltage and responsivity were probed before and after the deposit Ag nanoparticle and the responsivity increased from 0.35A/W to 0.6A/W and the responsivity increased in infrared region. Top Keywords Porous silicon. Annealing. Depositing. Ag nanoparticles. Top | |
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