Journal ArticleDOI
Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters
TLDR
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.Abstract:
The emergence of semiconductor nanocrystals as the building blocks of nanotechnology has opened up new ways to utilize them in next generation solar cells. This paper focuses on the recent developments in the utilization of semiconductor quantum dots for light energy conversion. Three major ways to utilize semiconductor dots in solar cell include (i) metal−semiconductor or Schottky junction photovoltaic cell (ii) polymer−semiconductor hybrid solar cell, and (iii) quantum dot sensitized solar cell. Modulation of band energies through size control offers new ways to control photoresponse and photoconversion efficiency of the solar cell. Various strategies to maximize photoinduced charge separation and electron transfer processes for improving the overall efficiency of light energy conversion are discussed. Capture and transport of charge carriers within the semiconductor nanocrystal network to achieve efficient charge separation at the electrode surface remains a major challenge. Directing the future resear...read more
Citations
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Highly efficient, stable and reproducible CdSe-sensitized solar cells using copper sulfide as counter electrodes
Hua Zhang,Huili Bao,Xinhua Zhong +2 more
TL;DR: In this article, a mixture composed of CuS and Cu1.8S has been easily fabricated via a solvothermal method followed by screen-printing to form a counter electrode, and the results show that 400 °C is favorable for good conductivity, high electrochemical activity, low charge transfer resistance in a solid-solid interface and between the catalysts and electrolyte.
Journal ArticleDOI
Sulfurated [NiFe]-based layered double hydroxides nanoparticles as efficient co-catalysts for photocatalytic hydrogen evolution using CdTe/CdS quantum dots
TL;DR: In this paper, the authors reported the synthesis of the sulfurated [NiFe]-LDH (FeNiS) nanoparticles via the sulfurizing treatment of [Ni Fe]-based LDH.
Journal ArticleDOI
Compound Semiconductor Nanowire Solar Cells
Ke Sun,Alireza Kargar,Namsoek Park,Kristian Madsen,Perry Naughton,T. Bright,Yi Jing,Deli Wang +7 more
TL;DR: There have been many recent developments in compound semiconductor nanowire photovoltaic devices as mentioned in this paper, which enable nanowires to be implemented for efficient and low-cost solar-energy harvesting devices.
Journal ArticleDOI
Scaling up the Aqueous Synthesis of Visible Light Emitting Multinary AgInS2/ZnS Core/Shell Quantum Dots
TL;DR: In this paper, 3 g of water-soluble AgInS2/ZnS core/shell quantum dots were synthesized in an aqueous solution of gelatin and thioglycolic acid (TGA).
References
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Journal ArticleDOI
Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
TL;DR: In this article, an upper theoretical limit for the efficiency of p−n junction solar energy converters, called the detailed balance limit of efficiency, has been calculated for an ideal case in which the only recombination mechanism of holeelectron pairs is radiative as required by the principle of detailed balance.
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Carbon Nanotubes--the Route Toward Applications
TL;DR: Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects.
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Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
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The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
Journal ArticleDOI
Semiconductor Nanocrystals as Fluorescent Biological Labels
TL;DR: Semiconductor nanocrystals prepared for use as fluorescent probes in biological staining and diagnostics have a narrow, tunable, symmetric emission spectrum and are photochemically stable.