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Title: Material Dimensionality Effects on Electron Transfer Rates Between CsPbBr3 and CdSe Nanoparticles

Abstract

Films containing mixtures of zero- or two-dimensional nanostructures (quantum dots or nanoplatelets) were prepared in order to investigate the impacts of dimensionality on electronic interactions. Electron transfer from CsPbBr3 to CdSe was observed in all of the mixtures, regardless of particle dimensionality, and characterized via static and transient absorption and photoluminescence spectroscopies. We find that mixtures containing nanoplatelets, either as the electron donor (CsPbBr3) or acceptor (CdSe), undergo charge transfer more rapidly than those containing quantum dots. These results bolster the use of one- or two-dimensional nanomaterials in the place of zero-dimensional quantum dots in the design of related optoelectronic devices such as solar cells, light-emitting diodes, and photocatalysts and further offer the prospect of fewer required hopping events to transport carriers due to the larger spatial extent of the particles.

Authors:
 [1]; ORCiD logo [2];  [3];  [2];  [2];  [1]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [4]
  1. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  3. Federal Inst. of Technology (ETH), Zurich (Switzerland). Dept. of Chemistry and Applied Biosciences; Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf (Switzerland)
  4. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1491800
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 18; Journal Issue: 8; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; dimensionality; electron transfer; Nanoplatelets; perovskites; spectroscopy

Citation Formats

Brumberg, Alexandra, Diroll, Benjamin T., Nedelcu, Georgian, Sykes, Matthew E., Liu, Yuzi, Harvey, Samantha M., Wasielewski, Michael R., Kovalenko, Maksym V., and Schaller, Richard D. Material Dimensionality Effects on Electron Transfer Rates Between CsPbBr3 and CdSe Nanoparticles. United States: N. p., 2018. Web. doi:10.1021/acs.nanolett.8b01238.
Brumberg, Alexandra, Diroll, Benjamin T., Nedelcu, Georgian, Sykes, Matthew E., Liu, Yuzi, Harvey, Samantha M., Wasielewski, Michael R., Kovalenko, Maksym V., & Schaller, Richard D. Material Dimensionality Effects on Electron Transfer Rates Between CsPbBr3 and CdSe Nanoparticles. United States. doi:10.1021/acs.nanolett.8b01238.
Brumberg, Alexandra, Diroll, Benjamin T., Nedelcu, Georgian, Sykes, Matthew E., Liu, Yuzi, Harvey, Samantha M., Wasielewski, Michael R., Kovalenko, Maksym V., and Schaller, Richard D. Tue . "Material Dimensionality Effects on Electron Transfer Rates Between CsPbBr3 and CdSe Nanoparticles". United States. doi:10.1021/acs.nanolett.8b01238. https://www.osti.gov/servlets/purl/1491800.
@article{osti_1491800,
title = {Material Dimensionality Effects on Electron Transfer Rates Between CsPbBr3 and CdSe Nanoparticles},
author = {Brumberg, Alexandra and Diroll, Benjamin T. and Nedelcu, Georgian and Sykes, Matthew E. and Liu, Yuzi and Harvey, Samantha M. and Wasielewski, Michael R. and Kovalenko, Maksym V. and Schaller, Richard D.},
abstractNote = {Films containing mixtures of zero- or two-dimensional nanostructures (quantum dots or nanoplatelets) were prepared in order to investigate the impacts of dimensionality on electronic interactions. Electron transfer from CsPbBr3 to CdSe was observed in all of the mixtures, regardless of particle dimensionality, and characterized via static and transient absorption and photoluminescence spectroscopies. We find that mixtures containing nanoplatelets, either as the electron donor (CsPbBr3) or acceptor (CdSe), undergo charge transfer more rapidly than those containing quantum dots. These results bolster the use of one- or two-dimensional nanomaterials in the place of zero-dimensional quantum dots in the design of related optoelectronic devices such as solar cells, light-emitting diodes, and photocatalysts and further offer the prospect of fewer required hopping events to transport carriers due to the larger spatial extent of the particles.},
doi = {10.1021/acs.nanolett.8b01238},
journal = {Nano Letters},
number = 8,
volume = 18,
place = {United States},
year = {2018},
month = {6}
}

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Cited by: 16 works
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Figures / Tables:

Figure 1. Figure 1.: (A) Normalized solution absorption (dashed lines) and film photoluminescence (solid lines) spectra, offset vertically for clarity and (B) TEM images of CdSe QDs and NPLs and CsPbBr3 QDs and NPLs. TEM scale bars are 50 nm. (C) Conduction and valence band levels of CsPbBr3 QDs and CdSe NPLs,more » based on values reported in refs 43 and 45. Although the exact energies vary for QDs and NPLs of each material, electron transfer is energetically favorable for each combination of CsPbBr3 and CdSe.« less

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Works referencing / citing this record:

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