Heteroleptic Tin(IV) Aminoalkoxides and Aminofluoroalkoxides as MOCVD Precursors for Undoped and F-Doped SnO Thin Films.

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ID: 105089
2020
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Abstract
A series of asymmetric and potentially bidentate amino alcohols and amino fluoro alcohols (ROH) having a different number of methyl/trifluoromethyl substituents at the α-carbon atom, [HOC(R)(R)CHNMe] (R = R = H (dmaeH); R = H, R = CH (dmapH); R = R = CH (dmampH); R = H, R = CF (F-dmapH); R = R = CF (F-dmampH)) have been used to develop new monomeric and heteroleptic tin(IV) amino(fluoro)alkoxides [Sn(OR)(OR)] (R = Et, Pr, Bu). These new complexes, which were thoroughly characterized by spectroscopy (IR and multinuclei NMR (H, C, F, and Sn)) as well as single-crystal X-ray studies on representative samples, were investigated for their thermal behavior to determine their suitability as MOCVD precursors for the deposition of metal oxide thin films. The two most suitable compounds, [Sn(OBu)(dmamp)] and [Sn(OBu)(F-dmamp)], were used in a direct liquid injection chemical vapor deposition (DLI-CVD) process to deposit undoped SnO and F-doped SnO thin films, respectively, on silicon and quartz substrates. Film growth rates at different temperatures (from 400 to 700 °C), film thickness, crystalline quality, and surface morphology were investigated. The films deposited on quartz showed high transparency (above 80%) in the visible region and low carbon contamination on the surface (11-13% from XPS), which could easily be removed completely with 2 min of Ar sputtering.
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verchre2020heterolepticinorganic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Verchère, Alexandre;Mishra, Shashank;Jeanneau, Erwann;Guillon, Hervé;Decams, Jean-Manuel;Daniele, Stéphane;
Journal Inorganic chemistry
Year 2020
DOI
10.1021/acs.inorgchem.0c00617
URL
Keywords
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