Title: The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography

Abstract

Here, dip-pen nanolithography (DPN) is used to precisely position core/thick-shell (“giant”) quantum dots (gQDs; ≥10 nm in diameter) exclusively on top of silicon nanodisk antennas (≈500 nm diameter pillars with a height of ≈200 nm), resulting in periodic arrays of hybrid nanostructures and demonstrating a facile integration strategy toward next-generation quantum light sources. A three-step reading-inking-writing approach is employed, where atomic force microscopy (AFM) images of the pre-patterned substrate topography are used as maps to direct accurate placement of nanocrystals. The DPN “ink” comprises gQDs suspended in a non-aqueous carrier solvent, o-dichlorobenzene. Systematic analyses of factors influencing deposition rate for this non-conventional DPN ink are described for flat substrates and used to establish the conditions required to achieve small (sub-500 nm) feature sizes, namely: dwell time, ink-substrate contact angle and ink volume. Finally, it is shown that the rate of solvent transport controls the feature size in which gQDs are found on the substrate, but also that the number and consistency of nanocrystals deposited depends on the stability of the gQD suspension. In conclusion, the results lay the groundwork for expanded use of nanocrystal liquid inks and DPN for fabrication of multi-component nanostructures that are challenging to create using traditionalmore » lithographic techniques.« less

Authors:

Dawood, Farah ^[1]; Wang, Jun  ^[1];

• Search DOE PAGES for author "Wang, Jun"
• Search DOE PAGES for ORCID "0000-0003-4974-1240"

Schulze, Peter Andreas  ^[1];

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• Search DOE PAGES for ORCID "0000-0001-5962-9653"

Sheehan, Chris J. ^[1]; Buck, Matthew R. ^[1]; Dennis, Allison M. ^[1]; Majumder, Somak  ^[1];

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• Search DOE PAGES for ORCID "0000-0003-1052-0627"

Krishnamurthy, Sachi ^[1]; Ticknor, Matthew ^[1]; Staude, Isabelle ^[2]; Brener, Igal ^[3]; Goodwin, Peter Marvin  ^[1];

• Search DOE PAGES for author "Goodwin, Peter Marvin"
• Search DOE PAGES for ORCID "0000-0001-8150-0805"

Amro, Nabil A. ^[4]; Hollingsworth, Jennifer Ann  ^[1]

• Search DOE PAGES for author "Hollingsworth, Jennifer Ann"
• Search DOE PAGES for ORCID "0000-0003-3099-1215"

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+ Show Author Affiliations

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. The Australian National University, Canberra (Australia)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
4. Advanced Creative Solutions Technology, Carlsbad, CA (United States)

Publication Date:

Wed Jun 27 00:00:00 EDT 2018

Research Org.:

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:

1482002

Alternate Identifier(s):

OSTI ID: 1457509

Report Number(s):

LA-UR-18-24213
Journal ID: ISSN 1613-6810

Grant/Contract Number:  

AC52-06NA25396; NA0003525

Resource Type:

Accepted Manuscript

Journal Name:

Small

Additional Journal Information:

Journal Volume: 14; Journal Issue: 31; Journal ID: ISSN 1613-6810

Publisher:

Wiley

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; dip-pen nanolithography; nanofabrication; optical nanoantenna; quantum dots