Correction: Structural characterization of a polycrystalline epitaxially-fused colloidal quantum dot superlattice by electron tomography

Xiaolei Chu; Hamed Heidari; Alex Abelson; Davis Unruh; Chase Hansen; Caroline Qian; Gergely Zimanyi; Matt Law; Adam J. Moulé

doi:10.1039/D0TA90212H

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DOI: 10.1039/D0TA90212H (Correction) J. Mater. Chem. A, 2020, 8, 21339-21339

Correction: Structural characterization of a polycrystalline epitaxially-fused colloidal quantum dot superlattice by electron tomography

Xiaolei Chu ^a, Hamed Heidari ^a, Alex Abelson ^b, Davis Unruh ^c, Chase Hansen ^c, Caroline Qian ^d, Gergely Zimanyi ^c, Matt Law *^bde and Adam J. Moulé *^a
^aDepartment of Chemical Engineering, University of California, Davis, USA. E-mail: amoule@ucdavis.edu
^bDepartment of Materials Science and Engineering, University of California, Irvine, CA 92697, USA. E-mail: matt.law@uci.edu
^cDepartment of Physics, University of California, Davis, USA
^dDepartment of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697, USA
^eDepartment of Chemistry, University of California, Irvine, CA 92697, USA

Received 8th September 2020 , Accepted 8th September 2020

First published on 7th October 2020

Abstract

Correction for ‘Structural characterization of a polycrystalline epitaxially-fused colloidal quantum dot superlattice by electron tomography’ by Xiaolei Chu et al., J. Mater. Chem. A, 2020, DOI: 10.1039/d0ta06704k.

The authors regret the following minor errors in the published article:

In Section 2.1 (Materials), two chemicals, lead iodide and ethanol, were accidentally omitted from the list. The revised text should read:

“Lead oxide (PbO, 99.999%), lead iodide (PbI₂, 99.9985%, purchased from Alfa Aesar), oleic acid (OA, technical grade, 90%), diphenylphosphine (DPP, 98%), 1-octadecene (ODE, 90%), ethanol (99.5%, anhydrous), ethylene glycol (EG, 99.8%, anhydrous), acetonitrile (99.99%, anhydrous), hexanes (≥99%, anhydrous), toluene (99.8%, anhydrous), (3-mercaptopropyl)trimethoxysilane (3-MPTMS, 95%), and N,N-dimethylformamide (DMF, 99.8%, anhydrous) were purchased from Sigma Aldrich and used as received.”

In Section 2.9 (Mobility simulation), the text “where ν is a suitably chosen prefactor… final state of the hooping.⁵⁹” should instead read as follows:

“where ν is an attempt frequency, chosen to be 10¹² s⁻¹, g_ij is the product of the initial density of states on QD_i and the final density of states on QD_j, and β_ij is the tunneling amplitude evaluated using the WKB approximation as

Here Δx is the minimal surface separation of the QDs. m* is the effective mass of electrons in the tunneling medium, approximated as 0.05m_e, the effective mass of electrons in bulk PbSe. E_vac is the vacuum energy level that is set to be zero as all other energy levels are defined relative to the vacuum. E_ij is the tunneling energy, taken to be the average of the initial and final states of the tunneling transition:

, where E_i and E_j are the energy levels of QD_i and QD_j.⁵⁹”

Finally, in Section 3.1 (SL unit cell and disorder), the text “with an average QD spacing of a along the chains and between the chains” should instead read: “with an average QD spacing of a along the chains and approximately between the chains”.

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.