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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Journal ArticleDOI
Impacts of surface or interface chemistry of ZnSe passivation layer on the performance of CdS/CdSe quantum dot sensitized solar cells
Fei Huang,Fei Huang,Juan Hou,Hong-En Wang,Hao Tang,Zhaoyu Liu,Lisha Zhang,Qifeng Zhang,Shanglong Peng,Jianshe Liu,Guozhong Cao +10 more
TL;DR: In this article, the significant impacts of ZnSe passivation layer with different surface or interface chemistry on the performance of CdS/CdSe QDSCs were reported.
Journal ArticleDOI
Synthesis of ZnSe/CdS/ZnSe Nanobarbells Showing Photoinduced Charge Separation
Maria Kirsanova,Alexander Nemchinov,Nishshanka N. Hewa-Kasakarage,Nicholas Schmall,Mikhail Zamkov +4 more
TL;DR: In this paper, a colloidal synthesis of barbell-shaped nanocrystals comprising a type II heterojunction of ZnSe and CdS domains was reported, showing compelling evidence of photoinduced charge separation at the interface of the materials.
Journal ArticleDOI
Benchmark Assessment of Density Functional Methods on Group II-VI MX (M = Zn, Cd; X = S, Se, Te) Quantum Dots.
TL;DR: This work builds a benchmark data set of geometrical parameters, vibrational normal modes, and low-lying excitation energies for MX quantum dots, with M = Cd, Zn, and X = S, Se, Te, and presents a test of several basis sets that include relativistic effects via effective core potentials or via the ZORA approximation.
Journal ArticleDOI
Hydrogen-Bonded Organic Semiconductor Micro- And Nanocrystals: From Colloidal Syntheses to (Opto-)Electronic Devices
Mykhailo Sytnyk,Eric Daniel Głowacki,Sergii Yakunin,Gundula Voss,Wolfgang Schöfberger,Dominik Kriegner,Julian Stangl,Rinaldo Trotta,Claudia Gollner,Sajjad Tollabimazraehno,Giuseppe Romanazzi,Zeynep Bozkurt,Marek Havlicek,Niyazi Serdar Sariciftci,Wolfgang Heiss +14 more
TL;DR: The semiconducting nanocrystals described here offer a cheap, nontoxic, and environmentally friendly alternative to inorganic nanocry crystals as well as a new paradigm for obtaining organic semiconductor materials from commercial colorants.
Journal ArticleDOI
Highly efficient quasi-solid-state quantum-dot-sensitized solar cell based on hydrogel electrolytes
TL;DR: In this article, a quasi-solid-state polysulfide electrolyte was used for CdS/CdSe co-sensitized solar cells (QDSCs) and the interfacial recombination at TiO(2)/electrolyte interface of the cell was also 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.
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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
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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.