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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Spectroscopic insights into high defect tolerance of Zn:CuInSe2 quantum-dot-sensitized solar cells
TL;DR: In this article, surface modifications have surprisingly little effect on photovoltaic performance suggesting that intragap defects do not impede but actually assist the photoconversion process in Zn:CuInSe2 QDs.
Journal ArticleDOI
Copper–indium–selenide quantum dot-sensitized solar cells
Jiwoong Yang,Jae-Yup Kim,Jung Ho Yu,Tae-Young Ahn,Hyunjae Lee,Taeseok Choi,Young-Woon Kim,Jin Joo,Min Jae Ko,Taeghwan Hyeon +9 more
TL;DR: A new synthetic process of near infrared (NIR)-absorbing copper-indium-selenide (CISe) quantum dots (QDs) and their applications to efficient and completely heavy-metal-free QD-sensitized solar cells (QDSCs).
Journal ArticleDOI
Inverted Colloidal Quantum Dot Solar Cells
Gi-Hwan Kim,Bright Walker,Hak-Beom Kim,Jin Young Kim,Jin Young Kim,Edward H. Sargent,Jongnam Park +6 more
TL;DR: An inverted architecture of quantum dot solar cells is demonstrated by introducing a novel ZnO method on top of the PbS CQD film, which improves device characteristics and provides a further electronic advantage.
Journal ArticleDOI
Copper deficient Zn–Cu–In–Se quantum dot sensitized solar cells for high efficiency
Linlin Zhang,Linlin Zhang,Zhenxiao Pan,Wei Wang,Jun Du,Zhenwei Ren,Qing Shen,Xinhua Zhong,Xinhua Zhong +8 more
TL;DR: In this paper, high quality composition controllable Zn-Cu-In-Se (ZCISe) QDs were synthesized, and the influence of non-stoichiometry on the optoelectronic properties, as well as on the photovoltaic performance of the resulting QDSCs, was investigated systematically.
Journal ArticleDOI
Exceptional catalytic efficiency in mineralization of the reactive textile azo dye (RB5) by a combination of ultrasound and core-shell nanoparticles (CdS/TiO2).
TL;DR: The selected combined method (sonocatalysis) was able to decolorize and oxidize simultaneously the organic dye with a complete mineralization into SO(4)(2-) and NO(3)(-) ions.
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.