Molecular Ligands Control Superlattice Structure and Crystallite Orientation in Colloidal Quantum Dot Solids

Santra, Pralay K.; Palmstrom, Axel F.; Tassone, Christopher J.; Bent, Stacey F.

doi:10.1021/acs.chemmater.6b03076

Title: Molecular Ligands Control Superlattice Structure and Crystallite Orientation in Colloidal Quantum Dot Solids

Journal Article · Fri Aug 26 00:00:00 EDT 2016 · Chemistry of Materials

DOI:https://doi.org/10.1021/acs.chemmater.6b03076· OSTI ID:1370018

Santra, Pralay K. ^[1]; Palmstrom, Axel F. ^[1]; Tassone, Christopher J. ^[2]; Bent, Stacey F. ^[1]

Stanford Univ., CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

Colloidal quantum dot solids represent a new materials platform that has garnered interest for a variety of electronic, optoelectronic, and photovoltaic applications. In such solids, individual quantum dots must be coupled with each other to facilitate charge transport through the solid. Past improvements on charge transport of colloidal quantum dot solids have been achieved primarily through the control of the interparticle spacing. Yet, the role of morphological ordering of the crystalline facets of individual quantum dots on the charge transport of the quantum dot solid is unknown. In this work, we show for the first time that small passivating ligand molecules around the quantum dots can control the arrangement of different facets of quantum dots within the quantum dot solid. The insights from this study provide important directions for future enhancement in orientation of quantum dots in colloidal quantum dot solids.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center on Nanostructuring for Efficient Energy Conversion (CNEEC)

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

Grant/Contract Number:: SC0001060; AC02-76SF00515

OSTI ID:: 1370018

Journal Information:: Chemistry of Materials, Vol. 28, Issue 19; Related Information: CNEEC partners with Stanford University (lead); Carnegie Institution at Stanford; Technical University of Denmark; ISSN 0897-4756

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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