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
Citations
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Journal ArticleDOI
First principles global optimization of metal clusters and nanoalloys
TL;DR: In this review, recent advances in first principle global optimization methods are described, with the main focus on genetic algorithms coupled with density functional theory for optimizing sub-nanometre metal clusters and nanoalloys.
Journal ArticleDOI
In situ interface engineering for probing the limit of quantum dot photovoltaic devices.
Hui Dong,Hui Dong,Feng Xu,Ziqi Sun,Xing Wu,Qiubo Zhang,Yusheng Zhai,Xiao-Dong Tan,Longbing He,Tao Xu,Ze Zhang,Xiangfeng Duan,Litao Sun +12 more
TL;DR: An in-situ fabrication and investigation of single TiO2-nanowire/CdSe-QD heterojunction solar cell (QDHSC) using a custom-designed photoelectric transmission electron microscope (TEM) holder reveals the possibility of achieving improved photovoltaic performance.
Journal ArticleDOI
Ag–TiO2 nanocomposites with improved photocatalytic properties prepared by a low temperature process in polyethylene glycol
TL;DR: In this paper, a rapid anodization process in a perchlorate containing electrolyte followed by an ultrasonic process was used to synthesize Ag nanoparticles on the surface of TiO 2 nanocrystals assisted by PEG600.
Proceedings ArticleDOI
An electrochemical route towards the fabrication of nanostructured semiconductor solar cells
Rosalinda Inguanta,Salvatore Piazza,Carmelo Sunseri,Alfonso Carmelo Cino,V. Di Dio,D. La Cascia,Rosario Miceli,C. Rando,Gaetano Zizzo +8 more
TL;DR: In this article, the authors present preliminary results regarding an electrochemical process which allows the growth of nanostructured materials by means of nanopore templates, and they analyze possible applications of this process to fabricate CIGS, suitable for photovoltaic devices.
Journal ArticleDOI
Hot-Hole Extraction from Quantum Dot to Molecular Adsorbate
TL;DR: In this article, a series of catechol derivatives were selected with different electron-donating and -withdrawing groups, and the effect of these groups on hole transfer and charge recombination (CR) dynamics has been 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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.