Chalcogenide-Based Nanocomposites as Counter Electrodes for Quantum Dot-Sensitized Solar Cells

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Author(s): S. Shanmugan (Koneru Lakshmaiah Education Foundation, India)
Copyright: 2026
Pages: 28
Source title: Chalcogenide-Based Materials for Optoelectronics, Energy, and Sustainability
Source Author(s)/Editor(s): Karthik Kannan (National Chung Cheng University, Taiwan & Karpagam Academy of Higher Education, India)and Vinaya Tari (Universitas Airlangga, Indonesia)
DOI: 10.4018/979-8-3373-3962-7.ch010

Keywords: Engineering Science Reference / Materials Science and Engineering / Nuclear & Energy Engineering / Science & Engineering

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Abstract

This study explores a sustainable and cost-effective method to improve dye-sensitized solar cells (DSSCs) by developing nickel sulfide (NiS) nanoparticle composites combined with activated carbon (AC) derived from sugarcane waste. The NiS/AC nanocomposites were prepared through a facile hydrothermal process assisted by ultrasonication and characterized using XRD, TEM, UV-Vis, Raman spectroscopy, and XPS to analyze their structure and optical features. Notably, the composite with 20% AC showed enhanced optical transmittance and a lowered bandgap from 1.82 to 1.56 eV, facilitating better visible light absorption. Electrochemical tests revealed that NiS/AC-20 electrodes had improved triiodide reduction kinetics compared to those with lower AC content. The optimized NiS/AC counter electrode exhibited a power conversion efficiency of 8.54%, supported by a short-circuit current density of 19.5 mA cm−2 and an open-circuit voltage near 0.759 V.

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Chalcogenide-Based Nanocomposites as Counter Electrodes for Quantum Dot-Sensitized Solar Cells

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