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Lead ethyl dithiocarbamates: efficient single-source precursors to PbS nanocubes.

ABSTRACT: Lead ethyl dithiocarbamates have been successfully used as single-source 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.

SUBMITTER: Saah SA

PROVIDER: S-EPMC6837187 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Lead ethyl dithiocarbamates: efficient single-source precursors to PbS nanocubes.

Saah S A SA Boadi N O NO Adu-Poku D D Wilkins C C

Royal Society open science 20191030 10

Lead ethyl dithiocarbamates have been successfully used as single-source 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 0.7 ...[more]

PMID: 31824708

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