Print Email Facebook Twitter Selective antimony reduction initiating the nucleation and growth of InSb quantum dots Title Selective antimony reduction initiating the nucleation and growth of InSb quantum dots Author Crisp, R.W. (TU Delft ChemE/Opto-electronic Materials) Grimaldi, G. (TU Delft ChemE/Opto-electronic Materials) De Trizio, Luca (Istituto Italiano di Tecnologia) Evers, W.H. (TU Delft BN/Technici en Analisten; Kavli institute of nanoscience Delft) Kirkwood, N.R.M. (TU Delft ChemE/Opto-electronic Materials) Kinge, Sachin (Toyota Motor Europe) Manna, L. (TU Delft QN/van der Zant Lab; Istituto Italiano di Tecnologia; Kavli institute of nanoscience Delft) Siebbeles, L.D.A. (TU Delft ChemE/Opto-electronic Materials) Houtepen, A.J. (TU Delft ChemE/Opto-electronic Materials) Date 2018-06-21 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 (∼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. To reference this document use: http://resolver.tudelft.nl/uuid:b8b447d4-6d3c-43ad-9289-3c0a18d267aa DOI https://doi.org/10.1039/c8nr02381f Embargo date 2018-11-28 ISSN 2040-3364 Source Nanoscale, 10 (23), 11110-11116 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 R.W. Crisp, G. Grimaldi, Luca De Trizio, W.H. Evers, N.R.M. Kirkwood, Sachin Kinge, L. Manna, L.D.A. Siebbeles, A.J. Houtepen Files PDF c8nr02381ftaverne.pdf 1.49 MB Close viewer /islandora/object/uuid:b8b447d4-6d3c-43ad-9289-3c0a18d267aa/datastream/OBJ/view