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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12601

Title: Lead ethyl dithiocarbamates: efficient single-source precursors to PbS nanocubes
Authors: Saah, S. A.
Boadi, Nathaniel Owusu
Adu-Poku, D.
Wilkins, C.
Keywords: lattice constant
scanning electron microscopy
band gap
X-ray diffractometer
Issue Date: 30-Oct-2019
Publisher: The Royal Society
Citation: Saah SA, Boadi NO, Adu-Poku D, Wilkins C. 2019 Lead ethyl dithiocarbamates: efficient single-source precursors to PbS nanocubes. R. Soc. open sci. 6: 190943. http://dx.doi.org/10.1098/rsos.190943
Abstract: Lead ethyl dithiocarbamates have been successfully used as singlesource precursors for the deposition of PbS using spin coating followed by annealing at moderate temperatures. The thin films were characterized using a powder X-ray diffractometer and were found to be face-centred cubic with the (200) plane being the most preferred orientation. Scanning electron microscopy images showed the formation of well-defined cubes. Optical band gaps of PbS thin films were estimated using Tauc plots as 0.72, 0.73 and 0.77 eV at annealing temperatures of 250, 300 and 400°C. These band gaps were all blue shifted from the bulk value of 0.41 eV. Energy-dispersive X-ray analysis was used to determine the composition of the thin films which showed an approximately 1 : 1 Pb to S ratio.
Description: An article published by The Royal Society and also available at . http://dx.doi.org/10.1098/rsos.190943
URI: http://hdl.handle.net/123456789/12601
Appears in Collections:College of Science

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