Selective antimony reduction initiating the nucleation and growth of InSb quantum dots

Crisp R, Grimaldi G, De Trizio L, Evers WH, Kirkwood N, Kinge S, Manna L, Siebbeles LDA, Houtepen AJ (2018)

Publication Status: Published

Publication Type: Journal article

Publication year: 2018

Journal

Nanoscale Royal Society of Chemistry

Publisher: ROYAL SOC CHEMISTRY

Book Volume: 10

Pages Range: 11110-11116

Journal Issue: 23

DOI: 10.1039/c8nr02381f

Abstract

Indium antimonide (InSb) quantum dots (QDs) have unique and interesting photophysical properties, but widespread experimentation with InSb QDs is lacking due to the difficulty in synthesizing this material. The key experimental challenge in fabricating InSb QDs is preparing a suitable Sb-precursor in the correct oxidation state that reacts with the In-precursor in a controllable manner. Here, we review and discuss the synthetic strategies for making colloidal InSb QDs and present a new reaction scheme yielding small (approximate to 1 nm diameter) InSb QDs. This was accomplished by employing Sb(NMe2)(3) as the antimony precursor and by screening different reducing agents that can selectively reduce it to stibine in situ. The released SbH3, subsequently, reacts with In carboxylate to form small InSb clusters. The absorption features are moderately tunable (from 400 nm to 660 nm) by the amount and rate of reductant addition as well as the temperature of injection and subsequent annealing. Optical properties were probed with transient absorption spectroscopy and show complex time and spectral dependencies.

Authors with CRIS profile

Ryan Crisp Lehrstuhl für Chemistry of thin film materials

Involved external institutions

Delft University of Technology (TU Delft) NL Netherlands (NL) Toyota US United States (USA) (US) Italian Institute of Technology / Istituto Italiano di Tecnologia (IIT) IT Italy (IT)

How to cite

APA:

Crisp, R., Grimaldi, G., De Trizio, L., Evers, W.H., Kirkwood, N., Kinge, S.,... Houtepen, A.J. (2018). Selective antimony reduction initiating the nucleation and growth of InSb quantum dots. Nanoscale, 10(23), 11110-11116. https://dx.doi.org/10.1039/c8nr02381f

MLA:

Crisp, Ryan, et al. "Selective antimony reduction initiating the nucleation and growth of InSb quantum dots." Nanoscale 10.23 (2018): 11110-11116.

BibTeX: Download