Journal ArticleDOI
Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters
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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
Surface-Area-Dependent Electron Transfer Between Isoenergetic 2D Quantum Wells and a Molecular Acceptor
Benjamin T. Diroll,Igor Fedin,Pierre Darancet,Dmitri V. Talapin,Dmitri V. Talapin,Richard D. Schaller,Richard D. Schaller +6 more
TL;DR: Measurements of electron transfer rates for four isoenergetic donor-acceptor pairs comprising a molecular electron acceptor, methylviologen (MV), and morphology-controlled colloidal semiconductor nanoparticles of CdSe show for the first time to be related to surface area in this regime that is intermediate between homogeneous and heterogeneous charge transfer.
Journal ArticleDOI
Au@poly(acrylic acid) plasmons and C60 improve the light harvesting capability of a TiO2/CdS/CdSeS photoanode
TL;DR: In this paper, a photoanode with CdS and CdSeS QDs as co-sensitizers, fullerene (C60) clusters as electron conduits and Au nanoparticles capped by poly(acrylic acid) or Au@PAA as plasmons, which were all tethered to TiO2 as the semiconducting scaffold.
Journal ArticleDOI
TiO2 nanorod arrays functionalized with In2S3 shell layer by a low-cost route for solar energy conversion.
TL;DR: Results show that the thickness of In(2)S(3) shell layers as well as the visible light absorption threshold can be effectively controlled by varying the coating cycles during the SILAR process, and are a proof of concept that such TiO(2)-In( 2)S (3) core-shell architectures are novel and promising photoelectrodes in nanostructured solar cells.
Journal ArticleDOI
Rapid phosphine-free synthesis of CdSe quantum dots: promoting the generation of Se precursors using a radical initiator
Bo Hou,David Benito-Alifonso,Richard F. Webster,David Cherns,M. Carmen Galan,David J. Fermín +5 more
TL;DR: The main organoselenium species generated during the solubilisation of elemental Se in 1-ODE and oleylamine were identified by 1D and 2D NMR spectroscopy (1H, 13C and 77Se) as discussed by the authors.
Journal ArticleDOI
Quantum-Dot-Sensitized Solar Cells with Water-Soluble and Air-Stable PbS Quantum Dots
Askhat N. Jumabekov,Felix Deschler,Felix Deschler,Daniel Böhm,Laurence M. Peter,Jochen Feldmann,Thomas Bein +6 more
TL;DR: In this paper, the sensitization of dispersed P25 TiO2 nanoparticles (NPs) and macroporous PbS quantum dots (QDs) capped with l-glutathione (GSH) ligands was investigated.
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.