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
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Journal ArticleDOI
Improved solar cell performance of chemosynthesized cadmium selenide pebbles
Sachin A. Pawar,Rupesh S. Devan,Dipali S. Patil,Annasaheb V. Moholkar,Myeng Gil Gang,Yuan-Ron Ma,Jin Hyeok Kim,Pramod S. Patil,Pramod S. Patil +8 more
TL;DR: In this paper, a simple and cost-effective one-step, one-pot chemical bath deposition method was used to synthesize the cadmium selenide pebble-like microstructures.
Journal ArticleDOI
Sb2S3-Sensitized Photoelectrochemical Cells: Open Circuit Voltage Enhancement through the Introduction of Poly-3-hexylthiophene Interlayer
Jin Hyuck Heo,Sang Hyuk Im,Hi Jung Kim,Pablo P. Boix,Suk Joong Lee,Sang Il Seok,Iván Mora-Seró,Juan Bisquert +7 more
TL;DR: In this paper, the Sb2S3-sensitized photoelectrochemical cells (Sb 2S3 -SPECs) in cobalt electrolyte were fabricated by depositing Sb 2 S 3 on the macroporous TiO2 nanorods electrodes and consecutively spin-coating P3HT interlayer to relieve the mass transport problem at vicinity of Sb S 3 and cobalt redox couples and reduce the backward recombination.
Journal ArticleDOI
CdS/TiO2-SrTiO3 heterostructure nanotube arrays for improved solar energy conversion efficiency
TL;DR: In this paper, the suppression of charge recombination at electrode surface is shown to be critical to efficient solar energy conversion, and the performance of CdS/TiO2/SrTiO3 electrode exhibits a superior photo-electrochemical performance than CcTiO 2 electrode with ∼ 70% increase in external quantum efficiency.
Journal ArticleDOI
Energy transfer versus charge separation in hybrid systems of semiconductor quantum dots and Ru-dyes as potential co-sensitizers of TiO2-based solar cells
Sixto Gimenez,Andrey L. Rogach,Andrey A. Lutich,Dieter Gross,Andreas Poeschl,Andrei S. Susha,Iván Mora-Seró,Teresa Lana-Villarreal,Juan Bisquert +8 more
TL;DR: In this paper, the type II energy level alignment between colloidal quantum dots and both N3 and Ru505 offers a possibility for the directional charge separation, with electrons transferred to the QDs and holes to the dye.
Journal ArticleDOI
Tuning the light absorption of Cu 1.97 S nanocrystals in supercrystal structures
Ilka Kriegel,Jessica Rodríguez-Fernández,Enrico Da Como,Andrey A. Lutich,Johann M. Szeifert,Jochen Feldmann +5 more
TL;DR: In this paper, the light absorption properties of Cu1.97S nanocrystals were tuned toward the red part of the visible spectrum by adding ligands to the supercrystals.
References
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Journal ArticleDOI
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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
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The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
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Journal ArticleDOI
Semiconductor Nanocrystals as Fluorescent Biological Labels
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