Authors: Thahe A.A., Bakhtiar H., Ali B.A., Hassan Z., Bidin N., Bououdina M., Qaeed M.A., Talib Z.A., Al-Azawi M.A., Alqaraghuli H., Uday M.B., Ramizy A., Al-Ghamdi M.S., Abubakar D., Allam N.K.
Author Affiliations: Thahe, A.A., Faculty of Science, Physics Department, Universiti Teknologi Malaysia, Johor Bahru, 81310, Malaysia; Bakhtiar, H., Faculty of Science, Physics Department, Universiti Teknologi Malaysia, Johor Bahru, 81310, Malaysia; Ali, B.A., Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt; Hassan, Z., Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, USM, Penang11800, Malaysia; Bidin, N., Laser Center, Institute Ibnu Sina, Universiti Teknologi Malaysia, Skudai, Johor 81310, Malaysia; Bououdina, M., Department of Physics, College of Science, University of Bahrain, PO Box 32038, Manama, Bahrain; Qaeed, M.A., Physics Department, Faculty of Science, Jeddah University, Jeddah, Saudi Arabia; Talib, Z.A., Faculty of Science, Department of Physics, Universiti Putra Malaysia (UPM), Serdang, Selangor 43400, Malaysia; Al-Azawi, M.A., Faculty of Science, Physics Department, Universiti Teknologi Malaysia, Johor Bahru, 81310, Malaysia; Alqaraghuli, H., Faculty of Electrical Engineering, Mechatronics and Automatic Control Department, Universiti Technology Malaysia, Johor Bahru, 81310, Malaysia; Uday, M.B., UTM Centre for Low Carbon Transport in Cooperation with Imperial Collage London, Institute for Vehicle Systems and Engineering, University Teknologi Malaysia, UTM Skudai, Johor 81310, Malaysia; Ramizy, A., Physics Department, Faculty of Science, University of Anbar, Iraq; Al-Ghamdi, M.S., Department of Physics, Faculty of Science, King Abdulaziz University, Saudi Arabia; Abubakar, D., Physics Department, Bauchi State Universiti Gadau, 65 Itas/GadauBauchi, Nigeria; Allam, N.K., Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
Publication Date: 2018
The effect of the annealing temperature on the photoelectrical properties of the nanoporous silicon/zinc oxide nanocrystallites-based (Pt/n-PSi/ZnO NCs/Pt) photodetector was investigated. Different morphologies of 3D ZnO were synthesized onto the n-PSi substrates via radio frequency (RF) sputtering in the absence of a catalyst. The synthesis of ZnO NCs was controlled by varying the growth temperature between 600–700 °C and 800–900 °C. The effect of the synthesis temperature on the structural, morphological, and optical properties of the n-PSi/ZnO NCs was systematically studied using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), atomic force microscopy (AFM), and photoluminescence spectroscopy (PL) techniques. The roughness was found to be dependent on the anodization current density. The optimal n-PSi/ZnO NCs-based metal-semiconductor-metal UV detector (MSM) was fabricated at 700 °C. The fabricated device showed a high sensitivity of 1007.14, an internal photoconductive gain of 11.07, and a responsivity of 5.99 A/W with a low dark current when illuminated with 380 nm light (1.55 mW/cm2) at +5 V bias voltage. In addition, the response and recovery times were determined to be 0.34 and 0.22 s, respectively. This approach offers a cost-effective substrate and simple synthesis method to improve the growth of the n-PSi/ZnO NCs and demonstrates the successful fabrication of nanoscale photodetectors with potential application in nano-optics devices. © 2018 Elsevier B.V.
Eshan2020-11-28T18:53:53+00:00
