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
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Journal ArticleDOI
Ex Situ CdSe Quantum Dot-Sensitized Solar Cells Employing Inorganic Ligand Exchange To Boost Efficiency
Feng Liu,Jun Zhu,Junfeng Wei,Yi Li,Linhua Hu,Yang Huang,Oshima Takuya,Qing Shen,Taro Toyoda,Bing Zhang,Jianxi Yao,Songyuan Dai,Songyuan Dai +12 more
TL;DR: In this paper, an effective way to boost the as-synthesized CdSe quantum dot-sensitized solar cells performance by introducing an inorganic ligand exchange strategy into this traditional system is presented.
Journal ArticleDOI
Hybrid CdSe/TiO2 nanowire photoelectrodes: Fabrication and photoelectric performance
TL;DR: In this article, annealing treatments at various temperatures (350 °C, O2, N2, Ar, and vacuum) are used to improve the performance of the as-deposited photoelectrode and the effects of various annesaling atmospheres (air, O 2, N 2, Ar and vacuum).
Journal ArticleDOI
Recent developments on the synthesis, structural and optical properties of chalcogenide quantum dots
Journal ArticleDOI
Graphene frameworks promoted electron transport in quantum dot-sensitized solar cells.
Yanyan Zhu,Xin Meng,Huijuan Cui,Suping Jia,Jianhui Dong,Jianfeng Zheng,Jianghong Zhao,Zhijian Wang,Li Li,Li Zhang,Zhenping Zhu +10 more
TL;DR: Results revealed that the GFs/TiO2 electrode has a shorter electron transport time, as well as longer electron lifetime and diffusion path length, than conventional 2D graphene sheets/Ti O2 electrode, thus indicating that GFs could promote rapid electron transfer in TiO2 photoanodes.
Journal ArticleDOI
In-situ synthesis of CdS/g-C3N4 hybrid nanocomposites with enhanced visible photocatalytic activity
TL;DR: In this article, a simple in situ synthetic strategy was used to fabricate CdS/g-C3N4 hybrid nanocomposite catalysts with visible-light-driven photocatalytic activity from cadmium-containing carbon nitride compounds.
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.