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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Solar Cells Based on Junctions between Colloidal PbSe Nanocrystals and Thin ZnO Films
TL;DR: A new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films is reported, which generates large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films.
Journal ArticleDOI
Highly efficient CdS/CdSe-sensitized solar cells controlled by the structural properties of compact porous TiO2 photoelectrodes
Quanxin Zhang,Xiaozhi Guo,Xiaoming Huang,Shuqing Huang,Dongmei Li,Yanhong Luo,Qing Shen,Taro Toyoda,Qingbo Meng +8 more
TL;DR: Quantitative analyses of light-harvesting efficiency (LHE) and electron-transfer yield (Φ(ET)) for the QDSCs are investigated for the first time and it is revealed that the LHE increases in the long wavelength region with the addition of large size TiO(2) particles to the transparent film.
Journal ArticleDOI
Nanochemistry and nanomaterials for photovoltaics.
TL;DR: This review surveys recent advances employed to introduce new concepts for improving the solar energy conversion efficiency, and reduce the device fabrication cost in photovoltaic technologies.
Journal ArticleDOI
Synthesis and applications of metal-organic framework–quantum dot (QD@MOF) composites
TL;DR: The combination of the high surface areas, microporosity and tuneable compositions of metal-organic frameworks (MOFs) with the desirable photo-physical behaviour of semiconductor nanoparticles or quantum dots (QDs), allows the preparation of composite materials with enhanced properties for applications in photocatalysis, energy, gas storage and sensing as mentioned in this paper.
Journal ArticleDOI
Tandem-layered quantum dot solar cells: tuning the photovoltaic response with luminescent ternary cadmium chalcogenides.
TL;DR: The synergy of using tandem layers of the ternary semiconductor CdSeS in QDSCs was systematically evaluated using transient spectroscopy and photoelectrochemistry to indicate varying degrees of photon harvesting.
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.
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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.