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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Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.
TL;DR: This work reviews the historical development of Transition metal dichalcogenides, methods for preparing atomically thin layers, their electronic and optical properties, and prospects for future advances in electronics and optoelectronics.
Journal ArticleDOI
Dye-Sensitized Solar Cells
TL;DR: Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency as mentioned in this paper, and many DSC research groups have been established around the world.
Journal ArticleDOI
Prospects of Colloidal Nanocrystals for Electronic and Optoelectronic Applications
TL;DR: Nanocrystals (NCs) discussed in this Review are tiny crystals of metals, semiconductors, and magnetic material consisting of hundreds to a few thousand atoms each that are among the hottest research topics of the last decades.
Journal ArticleDOI
A review on the visible light active titanium dioxide photocatalysts for environmental applications
Miguel Pelaez,Nicholas T. Nolan,Suresh C. Pillai,Michael K. Seery,Polycarpos Falaras,Athanassios G. Kontos,Psm Dunlop,Jwj Hamilton,John Byrne,Kevin E. O'Shea,Mh. Entezari,Dionysios D. Dionysiou +11 more
TL;DR: In this paper, the development of different strategies to modify TiO2 for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed.
Journal ArticleDOI
Perovskites: The Emergence of a New Era for Low-Cost, High-Efficiency Solar Cells
TL;DR: In this paper, the authors discussed the steps that have led to this discovery, and the future of this rapidly advancing concept have been considered, and it is likely that the next few years of solar research will advance this technology to the very highest efficiencies while retaining the very lowest cost and embodied energy.
References
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Journal ArticleDOI
Fermi Level Equilibration in Quantum Dot−Metal Nanojunctions†
TL;DR: In this paper, the process of Fermi level equilibration in 5 nm ZnO quantum dot−metal nano-junctions has been monitored using changes to both the surface plasmon band of the metal island and the sharp exciton band in the nanocrystals following photoinduced electron accumulation.
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Electroluminescence from heterostructures of poly(phenylene vinylene) and inorganic CdSe nanocrystals
Hedi Mattoussi,L. H. Radzilowski,B. O. Dabbousi,Edwin L. Thomas,Moungi G. Bawendi,Michael F. Rubner +5 more
TL;DR: In this article, the performance of these heterostructure devices is influenced by the thickness of the dot layer, and they show that the electroluminescence signal is almost exclusively generated within the inorganic layer, with a very weak contribution from the PPV layer at higher applied voltage.
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On the Quenching of Semiconductor Quantum Dot Photoluminescence by Proximal Gold Nanoparticles
Thomas Pons,Igor L. Medintz,Kim E. Sapsford,Seiichiro Higashiya,Amy F. Grimes,Doug S. English,Hedi Mattoussi +6 more
TL;DR: The results indicate that nonradiative quenching of the QD emission by proximal Au-NPs is due to long-distance dipole-metal interactions that extend significantly beyond the classical Förster range, in agreement with previous studies using organic dye-Au-NP donor-acceptor pairs.
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Carbon nanofibers for composite applications
TL;DR: In this paper, a volume production of a single carbon nanofiber type which can be used in a wide range of systems beyond, but not restricted to polymer composites is discussed.
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Green emission to probe photoinduced charging events in ZnO-Au nanoparticles. Charge distribution and fermi-level equilibration
TL;DR: In this paper, a linear relationship between stored electrons and the emission quenching was found for UV-irradiated ZnO colloids with an electron acceptor (O2 or thionine dye).