LEAD DIALKYLDITHIOCARBAMATES

Lead bis(diethyldithiocarbamate) Pb(S2CNEt2)2 has been applied as single source precursor for the growth of PbS films by MOCVD and PECVD[4]

    Lead(II) dithiocarbamato complexes were utilized as precursors for the LP-MOCVD of lead sulfide thin films. Films consisting of  cubic crystallites with columnar growth strong [200] orientation were grown, as was determined by XRD . The approach has potential for the fabrication of IR detection devices.[[i]]

[i] T. Trindade, Paul O' Brien, Chem. Vap. Dep., 1997, Vol.3, Iss.2, p.75–77, DOI: 10.1002/cvde.19970030203 “Lead(II) dithiocarbamato complexes as precursors for the LP-MOCVD of lead sulfide”,

Pb(S2CNEt2)2 (Pb(dedtc)2) for PbSO4 thin films by ALD

 

Lead diethyldithiocarbamate Pb(dedtc)2 (and for comparison PbPh4 and Pb(thd)2) attempted to  as precursor for the growth of PbO2 thin films by ALD on Si(100) substrates, with ozone O3 as oxidant. However, using Pb(dedtc)2 as a Pb-containing precursor lead sulphate PbSO4 films were obtained instead, which upon annealing reacted with the substrate and formed lead silicate. The depositions were carried out at 300–350 °C for Pb(dedtc)2 (as compared to 185–400 °C for Ph4Pb  and 150–300 °C for Pb(thd)2). [[i][PS1]  

 

A series of lead dithiocarbamato complexes, [Pb(S2CNRR)2] (R = Me, Et; R = iPr, nBu) was synthesised and characterised.

These compounds were utilised as single-source precursors for the growth of cubic lead sulfide PbS thin films by AACVD and LP-MOCVD on glass substrates  The solid-state structures of the symmetrically substituted complexes, [Pb(S2CN(Hex)2)2] and [Pb(S2CN(Pentyl)2)2] were determined by single-crystal XRD.[[ii][PS2] ]

[i]J. Harjuoja, M. Putkonen, L. Niinistö, Thin Solid Films, 2006, Vol.497, Iss. 1–2, p. 77-82, « Exploiting volatile lead compounds as precursors for the atomic layer deposition of lead dioxide thin films »

https://doi.org/10.1016/j.tsf.2005.09.188, https://www.sciencedirect.com/science/article/pii/S0040609005018407

[ii]M. Afzaal,   K. Ellwood,  N. L. Pickett,  P. O'Brien,  J. Raftery, J. Waters, J. Mater. Chem., 2004,14, 1310-1315, DOI: 10.1039/B313063K, “Growth of lead chalcogenide thin films using single-source precursors”

http://pubs.rsc.org/en/content/articlelanding/2004/jm/b313063k/unauth#!divAbstract

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