Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots

Zhang, Jianbing; Crisp, Ryan W.; Gao, Jianbo; Kroupa, Daniel M.; Beard, Matthew C.; Luther, Joseph M.

doi:10.1021/acs.jpclett.5b00689

Title: Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots

Abstract

Decreasing the variability in quantum dot (QD) syntheses is desirable for better uniformity of samples for use in QD-based studies and applications. Here we report a highly reproducible linear relationship between the concentration of ligand (in this case oleic acid, OA) and the lowest energy exciton peak position (nm) of the resulting PbS QDs for various hot-injection temperatures. Thus, for a given injection temperature, the size of the PbS QD product is purely controlled by the amount of OA. We used this relationship to study PbS QD solar cells that are fabricated from the same size of PbS QDs but synthesized using four different injection temperatures: 95, 120, 150, and 185 °C. We find that the power conversion efficiency does not depend on injection temperature but that the V_oc is higher for QDs synthesized at lower temperatures while the J_sc is improved in higher temperature QDs.

Authors:

Zhang, Jianbing ^[1]; Crisp, Ryan W. ^[2]; Gao, Jianbo ^[3]; Kroupa, Daniel M. ^[4]; Beard, Matthew C. ^[5]; Luther, Joseph M. ^[5]

School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, China, Chemical and Material Sciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States
Chemical and Material Sciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States, Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, United States
Chemical and Material Sciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States, Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
Chemical and Material Sciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States, Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, United States
Chemical and Material Sciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States

Publication Date:: Mon May 04 00:00:00 EDT 2015

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Advanced Solar Photophysics (CASP); National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1183797

Alternate Identifier(s):: OSTI ID: 1214941; OSTI ID: 1220732

Report Number(s):: NREL/JA-5900-64079
Journal ID: ISSN 1948-7185

Grant/Contract Number:: AC52-06NA25396; AC36-08G028308; AC36-08GO28308

Resource Type:: Journal Article: Published Article

Journal Name:: Journal of Physical Chemistry Letters

Additional Journal Information:: Journal Name: Journal of Physical Chemistry Letters Journal Volume: 6 Journal Issue: 10; Journal ID: ISSN 1948-7185

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; nanocrystals; ligands; oleic acid; solar cells; photovoltaics; 14 SOLAR ENERGY; photovoltaics (PV)

Citation Formats


                    Zhang, Jianbing, Crisp, Ryan W., Gao, Jianbo, Kroupa, Daniel M., Beard, Matthew C., and Luther, Joseph M. Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots.  United States: N. p., 2015. 
        Web.  doi:10.1021/acs.jpclett.5b00689.

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                    Zhang, Jianbing, Crisp, Ryan W., Gao, Jianbo, Kroupa, Daniel M., Beard, Matthew C., & Luther, Joseph M. Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots.  United States.  https://doi.org/10.1021/acs.jpclett.5b00689

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                    Zhang, Jianbing, Crisp, Ryan W., Gao, Jianbo, Kroupa, Daniel M., Beard, Matthew C., and Luther, Joseph M. 2015.  
        "Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots".  United States.  https://doi.org/10.1021/acs.jpclett.5b00689.

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@article{osti_1183797,

  title        = {Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots},

  author       = {Zhang, Jianbing and Crisp, Ryan W. and Gao, Jianbo and Kroupa, Daniel M. and Beard, Matthew C. and Luther, Joseph M.},

  abstractNote = {Decreasing the variability in quantum dot (QD) syntheses is desirable for better uniformity of samples for use in QD-based studies and applications. Here we report a highly reproducible linear relationship between the concentration of ligand (in this case oleic acid, OA) and the lowest energy exciton peak position (nm) of the resulting PbS QDs for various hot-injection temperatures. Thus, for a given injection temperature, the size of the PbS QD product is purely controlled by the amount of OA. We used this relationship to study PbS QD solar cells that are fabricated from the same size of PbS QDs but synthesized using four different injection temperatures: 95, 120, 150, and 185 °C. We find that the power conversion efficiency does not depend on injection temperature but that the Voc is higher for QDs synthesized at lower temperatures while the Jsc is improved in higher temperature QDs.},

  doi          = {10.1021/acs.jpclett.5b00689},

  url          = {https://www.osti.gov/biblio/1183797},
  journal      = {Journal of Physical Chemistry Letters},

  issn         = {1948-7185},

  number       = 10,

  volume       = 6,

  place        = {United States},

  year         = {Mon May 04 00:00:00 EDT 2015},

  month        = {Mon May 04 00:00:00 EDT 2015}

}

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Title: Synthetic Conditions for High-Accuracy Size Control of PbS Quantum Dots

Abstract

Citation Formats

Ultrasensitive solution-cast quantum dot photodetectors journal, July 2006

Colloidal PbS Quantum Dot Solar Cells with High Fill Factor journal, June 2010

Colloidal PbS Nanocrystals with Size-Tunable Near-Infrared Emission: Observation of Post-Synthesis Self-Narrowing of the Particle Size Distribution journal, November 2003

Photoluminescence and Growth Kinetics of High-Quality Indium Arsenide and InAs-Based Core/Shell Colloidal Nanocrystals Synthesized Using Arsine (AsH 3 ) Generated via Zinc Arsenide as the Arsenic Source journal, February 2010

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Multigram Scale, Solventless, and Diffusion-Controlled Route to Highly Monodisperse PbS Nanocrystals journal, January 2006

A Reduction Pathway in the Synthesis of PbSe Nanocrystal Quantum Dots journal, August 2009

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