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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Journal ArticleDOI
Power conversion efficiency enhancement of various size CdS quantum dots and dye co-sensitized solar cells
Baoyuan Wang,Hao Ding,Yunxia Hu,Hai Zhou,Shuqiang Wang,Tian Wang,Rong Liu,Jun Zhang,Xina Wang,Hao Wang +9 more
TL;DR: In this article, various size CdS nanoparticles have been synthesized on the TiO2 nanorod arrays by chemical bath deposition method with annealing treatment at different temperatures.
Journal ArticleDOI
Application of graphene in dye and quantum dots sensitized solar cell
C. A. Ubani,C. A. Ubani,Mohd Adib Ibrahim,Mohd Asri Mat Teridi,Kamaruzzaman Sopian,J. Ali,K. T. Chaudhary +6 more
TL;DR: In this paper, a review of the application of Graphene in DSSC and QDSSC was discussed, which showed promising properties of graphene has shown to enhance various layers of a solar cell.
Journal ArticleDOI
Doping for Speed: Colloidal Nanoparticles for Thin-Film Optoelectronics
Kevin M. Noone,David S. Ginger +1 more
TL;DR: A new paper in this issue demonstrates photoconductive detectors made from Cu-containing In(2)S(3) nanoplates, leading to a significant decrease in the lifetime of the photoexcited carriers, resulting in significantly faster response times for the photodetectors processed from colloidal solution.
Journal ArticleDOI
Detailed Observation of Multiphoton Emission Enhancement from a Single Colloidal Quantum Dot Using a Silver-Coated AFM Tip
Hiroki Takata,Hiroyuki Naiki,Li Wang,Hideki Fujiwara,Keiji Sasaki,Naoto Tamai,Sadahiro Masuo +6 more
TL;DR: Evidence is provided that the photon statistics and the photon flux from the single NQD can be manipulated by the plasmonic nanostructure through control of the spectral overlap and the distance.
Journal ArticleDOI
Doped or Not Doped: Ionic Impurities for Influencing the Phase and Growth of Semiconductor Nanocrystals
Amit K. Guria,Narayan Pradhan +1 more
TL;DR: In this paper, it was shown that dopants or impurities present in the reaction system can affect the crystal growth and tune the shapes of crystals in ways that go beyond the classical approach where the nature of the precursors, ligands, and reaction conditions dependent facets controlling crystal growth mostly determined the shape.
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.