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Symmetry-Defying Iron Pyrite (FeS2) Nanocrystals through Oriented Attachment

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep02092· OSTI ID:1624628
 [1];  [2];  [2]
  1. Univ. of Kansas, Lawrence, KS (United States). Dept. of Chemistry; DOE/OSTI
  2. Univ. of Kansas, Lawrence, KS (United States). Dept. of Chemistry
Iron pyrite (fool’s gold, FeS2) is a promising earth abundant and environmentally benign semiconductor material that shows promise as a strong and broad absorber for photovoltaics and high energy density cathode material for batteries. However, controlling FeS2 nanocrystal formation (composition, size, shape, stoichiometry, etc.) and defect mitigation still remains a challenge. These problems represent significant limitations in the ability to control electrical, optical and electrochemical properties to exploit pyrite’s full potential for sustainable energy applications. Here, we report a symmetry-defying oriented attachment FeS2 nanocrystal growth by examining the nanostructure evolution and recrystallization to uncover how the shape, size and defects of FeS2 nanocrystals changes during growth. It is demonstrated that a well-controlled reaction temperature and annealing time results in polycrystal-to-monocrystal formation and defect annihilation, which correlates with the performance of photoresponse devices. This knowledge opens up a new tactic to address pyrite’s known defect problems.
Research Organization:
Univ. of Maryland, College Park, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0005448
OSTI ID:
1624628
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 3; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

Enhanced Photoresponse of FeS 2 Films: The Role of Marcasite-Pyrite Phase Junctions journal September 2016
300% Enhancement of Carrier Mobility in Uniaxial-Oriented Perovskite Films Formed by Topotactic-Oriented Attachment journal April 2017
Broadband Photodetectors Enabled by Localized Surface Plasmonic Resonance in Doped Iron Pyrite Nanocrystals journal February 2018
Prussian Blue-Derived Synthesis of Hollow Porous Iron Pyrite Nanoparticles as Platinum-Free Counter Electrodes for Highly Efficient Dye-Sensitized Solar Cells journal July 2017
Prussian Blue-Derived Synthesis of Hollow Porous Iron Pyrite Nanoparticles as Platinum-Free Counter Electrodes for Highly Efficient Dye-Sensitized Solar Cells journal August 2017
Nanocrystalline Pyrite for Photovoltaic Applications journal June 2018
Synthesis of Honeycomb-like Mesoporous Pyrite FeS 2 Microspheres as Efficient Counter Electrode in Quantum Dots Sensitized Solar Cells journal July 2014
Single-step electrochemical deposition of Mn2+ doped FeS2 thin films on ITO conducting glass substrates: physical, electrochemical and electrocatalytic properties journal January 2019
Recent Progress on Pyrite FeS2 Nanomaterials for Energy and Environment Applications: Synthesis, Properties and Future Prospects journal November 2019
Characterizing crystal growth by oriented aggregation journal January 2014
Precursor directed synthesis – “molecular” mechanisms in the Soft Chemistry approaches and their use for template-free synthesis of metal, metal oxide and metal chalcogenide nanoparticles and nanostructures journal January 2014
Three-dimensional oriented attachment growth of single-crystal pre-perovskite PbTiO 3 hollowed fibers journal January 2018
Oriented attachment growth of monocrystalline cuprous oxide nanowires in pure water journal January 2019
Synthetic iron pyrite across length scales: interfacial defects and macroscopic properties journal January 2019
Pressure compression of CdSe nanoparticles into luminescent nanowires journal May 2017
Electrochemical Properties for Co-Doped Pyrite with High Conductivity journal September 2015

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