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Substrates Dependent Low Temperature Fabrication of Silver Nanoparticles Using Rapid Thermal Annealing for Light Trapping Application

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This work presents a comparative study of low temperature fabrication of silver (Ag) nanoparticles (NPs) by rapid thermal annealing (RTA) of non-continuous Ag film onto various substrates such as glass, polished single-crystalline silicon (c-Si) and poly-crystalline silicon (pc-Si) with supporting growth mechanism. The RTA treatment for various time durations (5, 10, 15, 20 and 30 minutes) of Ag film has resulted into formation of uniformly distributed Ag NPs. The scanning electron microscope (SEM) measurements confirm variation in average particle size of Ag NPs for various RTA durations and show minimum particle size behavior profile irrespective of substrate surfaces. The so formed Ag NPs on glass substrates exhibit plasmonic peaks in the range of 415–435 nm. The atomic force microscope (AFM) measurement confirms prolate shape, least surface coverage area of substrate and minimal average particle size of Ag NPs to be suitable for maximizing reflection reduction of Si surface. The 20 minutes RTA treatment of non-continuous Ag film onto both c-Si and pc-Si substrate has led average reflectance reduction from 39.15% and 34.97% to 6.29% and 23.02%, respectively in 300–1100 nm wavelength region. An optimized integration of Ag NPs on Si surface can be useful for light trapping and hence can increase efficiency of Si solar cell by reflectance reduction via photocurrent increment.
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Keywords: Rapid Thermal Annealing; Reflectance Reduction; Silver Nanoparticles; Substrate Surface; Surface Plasmon Resonance

Document Type: Research Article

Affiliations: 1: Amity Institute for Advanced Research and Studies (Materials and Devices) and Amity Institute of Renewable and Alternative Energy, Amity University, Noida 201303, Uttar Pradesh, India 2: Indosolar Limited, No. 3C/1, Udyog Vihar, EcoTech-II, Greater Noida, 201306, India

Publication date: November 1, 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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