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
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
Hybrid solar cells with prescribed nanoscale morphologies based on hyperbranched semiconductor nanocrystals.
TL;DR: Three-dimensional hyperbranched colloidal semiconductor nanocrystals in solution-processed hybrid organic-inorganic solar cells are incorporated, yielding reproducible and controlled nanoscale morphology.
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Efficient, stable infrared photovoltaics based on solution-cast colloidal quantum dots.
Ghada I. Koleilat,Larissa Levina,Harnik Shukla,S. Myrskog,Sean Hinds,Andras G. Pattantyus-Abraham,Edward H. Sargent +6 more
TL;DR: Stable solution-processed photovoltaic devices having 3.6% power conversion efficiency in the infrared are reported, and diffusion of electrons and holes over hundreds of nanometers through the PbSe colloidal quantum dot solid is chiefly responsible for the high external quantum efficiencies obtained in this new class of devices.
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Femtosecond 1P-to-1S electron relaxation in strongly confined semiconductor nanocrystals
TL;DR: In this paper, high-sensitivity femtosecond transient absorption is applied to directly measure the population-depopulation dynamics of the lowest ( $1S$) and the first excited ( $ 1P$) electron states in CdSe nanocrystals (NC's) of different radii with energy separation up to 16 longitudinal optical phonon energies.
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High efficiency of CdSe quantum-dot-sensitized TiO2 inverse opal solar cells
TL;DR: In this paper, the authors demonstrated an approach to sensitized type solar cells, based on TiO2 inverse opal and the use of CdSe quantum dots (QDs) as sensitizers.