Journal ArticleDOI
Influence of Cu vacancy on knit coir mat structured CuS as counter electrode for quantum dot sensitized solar cells.
TLDR
From the UV-vis absorption spectra, it is observed that CuS thin film exhibits free carrier intraband absorption in the longer wavelengh region and the enhanced performance of CuS counter electrodes is due to Cu vacancies with increased S composition.Abstract:
Knit-coir-mat-like structured CuS thin films prepared by chemical bath deposition with different time duration were used as counter electrode in qunatum dot sensitized solar cells. The film deposited at 4 h exhibited better electrochemical and photovoltaic performance with JSC, VOC, and FF values of 14.584 mA cm–2, 0.566 V, and 54.57% and efficiency of 4.53%. From the UV–vis absorption spectra, it is observed that CuS thin film exhibits free carrier intraband absorption in the longer wavelengh region. The enhanced performance of CuS counter electrodes is due to Cu vacancies with increased S composition, and the quasi-Fermi energy level in semiconductors with respect to electrolyte redox potential is one of the causes that affects the electrocatalytic activity of counter electrodes.read more
Citations
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Journal ArticleDOI
Compound Copper Chalcogenide Nanocrystals
TL;DR: This review captures the synthesis, assembly, properties, and applications of copper chalcogenide NCs, which have achieved significant research interest in the last decade due to their compositional and structural versatility.
Journal ArticleDOI
Quantum dot-sensitized solar cells
TL;DR: A comprehensive overview of the development of quantum dot-sensitized solar cells (QDSCs) is presented in this paper, including the fundamental principles, key materials in QDSCs, recombination control, and stability issues.
Journal ArticleDOI
Carbon vacancy-induced enhancement of the visible light-driven photocatalytic oxidation of NO over g-c3N4 nanosheets
TL;DR: In this article, the photocatalytic performance of Cv-gCN was evaluated on the basis of NO oxidization under visible light irradiation (λ < 400 nm) in a continual reactor, and the successful formation of carbon vacancy in gCN was confirmed through electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS).
Journal ArticleDOI
Carbon nanotube/metal-sulfide composite flexible electrodes for high-performance quantum dot-sensitized solar cells and supercapacitors
TL;DR: The designed composite CNT/metal-sulfide electrodes offer an important guideline for the development of next level energy conversion and energy storage devices.
Journal ArticleDOI
Diversified copper sulfide (Cu2−xS) micro-/nanostructures: a comprehensive review on synthesis, modifications and applications
TL;DR: In this review, the important progress made in the diversified Cu2-xS micro-/nanostructures are summarized, including that in the synthetic strategies for the preparation of 0D, 1D, 2D, and 3D micro-/(nanostructure) and in the development of modified Cu-XS-based composites for enhanced performance, as well as their various applications.
References
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A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
TL;DR: In this article, the authors describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency.
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Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters
TL;DR: In this paper, three major ways to utilize semiconductor dots in solar cell include (i) metal−semiconductor or Schottky junction photovoltaic cell, (ii) polymer−smiconductor hybrid solar cell, and (iii) quantum dot sensitized solar cell.
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Meeting the Clean Energy Demand: Nanostructure Architectures for Solar Energy Conversion
TL;DR: In this article, three major ways to utilize nanostructures for the design of solar energy conversion devices are discussed: (i) mimicking photosynthesis with donor−acceptor molecular assemblies or clusters, (ii) semiconductor assisted photocatalysis to produce fuels such as hydrogen, and (iii) nanostructure semiconductor based solar cells.
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High efficiency carrier multiplication in PbSe nanocrystals: implications for solar energy conversion.
TL;DR: It is demonstrated for the first time that impact ionization (II) (the inverse of Auger recombination) occurs with very high efficiency in semiconductor nanocrystals (NCs) and can be used to considerably increase the power conversion efficiency of NC-based solar cells.
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Quantum Dot Solar Cells. Tuning Photoresponse through Size and Shape Control of CdSe−TiO2 Architecture
TL;DR: Two major findings are highlighted: ability to tune the photoelectrochemical response and photoconversion efficiency via size control of CdSe quantum dots and improvement in the photoconversions efficiency by facilitating the charge transport through TiO2 nanotube architecture.