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
Exciton Separation in CdS Supraparticles upon Conjugation with Graphene Sheets
Kasinath Ojha,Tushar Debnath,Partha Maity,Mahima Makkar,Siamak Nejati,Kandalam V. Ramanujachary,Pramit K. Chowdhury,Hirendra N. Ghosh,Ashok K. Ganguli +8 more
TL;DR: In this article, the electron transfer from photoexcited CdS to graphene was confirmed from the quenching of Cs emission and ultrafast transient absorption spectroscopy, and the charge separation process was monitored after following the bleach recovery kinetics at the excitonic position of the supraparticle Cs.
Journal ArticleDOI
Toward the Facile and Ecofriendly Fabrication of Quantum Dot-Sensitized Solar Cells via Thiol Coadsorbent Assistance
TL;DR: This paper reports a facile and environmentally friendly approach to the preparation of highly efficient quantum dot-sensitized solar cells (QDSSCs) based on a combination of aqueous CuInS2 quantum dots (QDs) and thiol coadsorbents.
Journal ArticleDOI
Holographic display and storage based on photo-responsive liquid crystals
TL;DR: An overview of recent efforts on holographic display and storage based on liquid crystalline materials can be found in this article, where the focus is placed on dynamic holographic displays which use fast-response liquid crystals doped with azo dye and quantum dots.
Journal ArticleDOI
Lead sulfide colloidal quantum dot photovoltaic cell for energy harvesting from human body thermal radiation
TL;DR: In this article, a solution-processed photovoltaic structure designed to convert human body thermal radiation into electricity was presented, where an active layer composed of a layer of isopropylamine-capped lead sulfide (PbS) quantum dots (QDs) covered with a top layer of lithium chloride (LiCl) on top is sandwiched between a substrate and an aluminum contact.
Journal ArticleDOI
Effect of Nb Doping of TiO2 Electrode on Charge Transport in Dye-Sensitized Solar Cells
TL;DR: In this paper, Nb-doped TiO2 layers were prepared by a solgel method followed by hydrothermal treatment with an Nb content ranging from 0.7 to 3.5 mol%.
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.
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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.