Controlled Synthesis of Tuned Bandgap Nanodimensional Alloys of PbSxSe1-x

J Akhtar; Mohammad Afzaal; M Banski; A Podhorodecki; M Syperek; J Misiewicz; U Bangert; SJO Hardman; DM Graham; WR Flavell; DJ Binks; S Gardonio; P O'Brien

Controlled Synthesis of Tuned Bandgap Nanodimensional Alloys of PbSxSe1-x

J Akhtar, Mohammad Afzaal, M Banski, A Podhorodecki, M Syperek, J Misiewicz, U Bangert, SJO Hardman, DM Graham, WR Flavell, DJ Binks, S Gardonio, P O'Brien

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

Abstract

Truly alloyed PbSxSe1-x (x = 0-1) nanocrystals (similar to 5 nm in size) have been prepared, and their resulting optical properties are red-shifted systematically as the sulfur content of the materials increases. Their optical properties are discussed using a modified Vegard's approach and the bowing parameter for these nanoalloys is reported for the first time. The alloyed structure of the nanocrystals is supported by the energy-filtered transmission electron microscope images of the samples, which show a homogeneous distribution of sulfur and selenium within the nanocrystals. X-ray photoelectron spectroscopy studies on ligand-exchanged nanocrystals confirmed the expected stoichiometry and various oxidized species.

Original language	English
Journal	Journal of the American Chemical Society
State	Published - 2011

Cite this

@article{93d9ef817e98495fa5fbaeb43bbde072,

title = "Controlled Synthesis of Tuned Bandgap Nanodimensional Alloys of PbSxSe1-x",

abstract = "Truly alloyed PbSxSe1-x (x = 0-1) nanocrystals (similar to 5 nm in size) have been prepared, and their resulting optical properties are red-shifted systematically as the sulfur content of the materials increases. Their optical properties are discussed using a modified Vegard's approach and the bowing parameter for these nanoalloys is reported for the first time. The alloyed structure of the nanocrystals is supported by the energy-filtered transmission electron microscope images of the samples, which show a homogeneous distribution of sulfur and selenium within the nanocrystals. X-ray photoelectron spectroscopy studies on ligand-exchanged nanocrystals confirmed the expected stoichiometry and various oxidized species.",

author = "J Akhtar and Mohammad Afzaal and M Banski and A Podhorodecki and M Syperek and J Misiewicz and U Bangert and SJO Hardman and DM Graham and WR Flavell and DJ Binks and S Gardonio and P O'Brien",

year = "2011",

language = "English",

}

TY - JOUR

T1 - Controlled Synthesis of Tuned Bandgap Nanodimensional Alloys of PbSxSe1-x

AU - Akhtar, J

AU - Afzaal, Mohammad

AU - Banski, M

AU - Podhorodecki, A

AU - Syperek, M

AU - Misiewicz, J

AU - Bangert, U

AU - Hardman, SJO

AU - Graham, DM

AU - Flavell, WR

AU - Binks, DJ

AU - Gardonio, S

AU - O'Brien, P

PY - 2011

Y1 - 2011

N2 - Truly alloyed PbSxSe1-x (x = 0-1) nanocrystals (similar to 5 nm in size) have been prepared, and their resulting optical properties are red-shifted systematically as the sulfur content of the materials increases. Their optical properties are discussed using a modified Vegard's approach and the bowing parameter for these nanoalloys is reported for the first time. The alloyed structure of the nanocrystals is supported by the energy-filtered transmission electron microscope images of the samples, which show a homogeneous distribution of sulfur and selenium within the nanocrystals. X-ray photoelectron spectroscopy studies on ligand-exchanged nanocrystals confirmed the expected stoichiometry and various oxidized species.

AB - Truly alloyed PbSxSe1-x (x = 0-1) nanocrystals (similar to 5 nm in size) have been prepared, and their resulting optical properties are red-shifted systematically as the sulfur content of the materials increases. Their optical properties are discussed using a modified Vegard's approach and the bowing parameter for these nanoalloys is reported for the first time. The alloyed structure of the nanocrystals is supported by the energy-filtered transmission electron microscope images of the samples, which show a homogeneous distribution of sulfur and selenium within the nanocrystals. X-ray photoelectron spectroscopy studies on ligand-exchanged nanocrystals confirmed the expected stoichiometry and various oxidized species.

M3 - Article

SN - 0002-7863

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

ER -

Controlled Synthesis of Tuned Bandgap Nanodimensional Alloys of PbSxSe1-x

Abstract

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