Synthesis and properties of PbSexS1-x alloyed nanocrystals

Ariel Kigel; Maya Brumer; Lilac Amirav; Aldona Sashchiuk; Efrat Lifshitz

doi:10.1117/12.726402

Synthesis and properties of PbSe_xS_1-x alloyed nanocrystals

Ariel Kigel, Maya Brumer, Lilac Amirav, Aldona Sashchiuk, Efrat Lifshitz

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present a comparative study of colloidal PbSe_xS_1-x alloyed nanocrystals (NCs) with variation of chemical composition and different structure (core-shell and homogeneous) prepared by a single-injection procedure with respect to corresponding PbSe core NCs and PbSe/PbS core-shell NCs prepared by the traditional two-injection procedure. The narrow band edge of absorption and photoluminescence 1S-exciton energy of PbSe_xS _1-x alloyed NCs were tuned (blue shifted) from the band edge of the same size PbSe NCs to the band edge of PbS NCs by controlling the Se+S/Pb molar ratio in the synthetic mixture. The magnitude of the Stokes shift was found to be dependent upon the size of NCs and on the core(shell) chemical composition. The largest Stokes shift (100 meV) was observed in the smaller PbSe NCs, while PbSe_xS_1-x core-alloyed shell NCs prepared by a single-injection procedure show the vanishing small Stokes shift.

Original language	English
Title of host publication	Advanced Optical Materials, Technologies, and Devices
DOIs	https://doi.org/10.1117/12.726402
State	Published - 2007
Event	Advanced Optical Materials, Technologies, and Devices - Vilnius, Lithuania Duration: 27 Aug 2006 → 30 Aug 2006

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6596
ISSN (Print)	0277-786X

Conference

Conference	Advanced Optical Materials, Technologies, and Devices
Country/Territory	Lithuania
City	Vilnius
Period	27/08/06 → 30/08/06

Keywords

Alloyed nanocrystals
Core- shell nanocrystals
PbSe nanocrystals

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.726402

Cite this

@inproceedings{e03d7539902f46e9a96425fe5820b9ce,

title = "Synthesis and properties of PbSexS1-x alloyed nanocrystals",

abstract = "We present a comparative study of colloidal PbSexS1-x alloyed nanocrystals (NCs) with variation of chemical composition and different structure (core-shell and homogeneous) prepared by a single-injection procedure with respect to corresponding PbSe core NCs and PbSe/PbS core-shell NCs prepared by the traditional two-injection procedure. The narrow band edge of absorption and photoluminescence 1S-exciton energy of PbSexS 1-x alloyed NCs were tuned (blue shifted) from the band edge of the same size PbSe NCs to the band edge of PbS NCs by controlling the Se+S/Pb molar ratio in the synthetic mixture. The magnitude of the Stokes shift was found to be dependent upon the size of NCs and on the core(shell) chemical composition. The largest Stokes shift (100 meV) was observed in the smaller PbSe NCs, while PbSexS1-x core-alloyed shell NCs prepared by a single-injection procedure show the vanishing small Stokes shift.",

keywords = "Alloyed nanocrystals, Core- shell nanocrystals, PbSe nanocrystals",

author = "Ariel Kigel and Maya Brumer and Lilac Amirav and Aldona Sashchiuk and Efrat Lifshitz",

year = "2007",

doi = "10.1117/12.726402",

language = "אנגלית",

isbn = "0819467324",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Advanced Optical Materials, Technologies, and Devices",

note = "Advanced Optical Materials, Technologies, and Devices ; Conference date: 27-08-2006 Through 30-08-2006",

}

Kigel, A, Brumer, M, Amirav, L, Sashchiuk, A & Lifshitz, E 2007, Synthesis and properties of PbSe_xS_1-x alloyed nanocrystals. in Advanced Optical Materials, Technologies, and Devices., 65960H, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6596, Advanced Optical Materials, Technologies, and Devices, Vilnius, Lithuania, 27/08/06. https://doi.org/10.1117/12.726402

TY - GEN

T1 - Synthesis and properties of PbSexS1-x alloyed nanocrystals

AU - Kigel, Ariel

AU - Brumer, Maya

AU - Amirav, Lilac

AU - Sashchiuk, Aldona

AU - Lifshitz, Efrat

PY - 2007

Y1 - 2007

N2 - We present a comparative study of colloidal PbSexS1-x alloyed nanocrystals (NCs) with variation of chemical composition and different structure (core-shell and homogeneous) prepared by a single-injection procedure with respect to corresponding PbSe core NCs and PbSe/PbS core-shell NCs prepared by the traditional two-injection procedure. The narrow band edge of absorption and photoluminescence 1S-exciton energy of PbSexS 1-x alloyed NCs were tuned (blue shifted) from the band edge of the same size PbSe NCs to the band edge of PbS NCs by controlling the Se+S/Pb molar ratio in the synthetic mixture. The magnitude of the Stokes shift was found to be dependent upon the size of NCs and on the core(shell) chemical composition. The largest Stokes shift (100 meV) was observed in the smaller PbSe NCs, while PbSexS1-x core-alloyed shell NCs prepared by a single-injection procedure show the vanishing small Stokes shift.

AB - We present a comparative study of colloidal PbSexS1-x alloyed nanocrystals (NCs) with variation of chemical composition and different structure (core-shell and homogeneous) prepared by a single-injection procedure with respect to corresponding PbSe core NCs and PbSe/PbS core-shell NCs prepared by the traditional two-injection procedure. The narrow band edge of absorption and photoluminescence 1S-exciton energy of PbSexS 1-x alloyed NCs were tuned (blue shifted) from the band edge of the same size PbSe NCs to the band edge of PbS NCs by controlling the Se+S/Pb molar ratio in the synthetic mixture. The magnitude of the Stokes shift was found to be dependent upon the size of NCs and on the core(shell) chemical composition. The largest Stokes shift (100 meV) was observed in the smaller PbSe NCs, while PbSexS1-x core-alloyed shell NCs prepared by a single-injection procedure show the vanishing small Stokes shift.

KW - Alloyed nanocrystals

KW - Core- shell nanocrystals

KW - PbSe nanocrystals

UR - http://www.scopus.com/inward/record.url?scp=34249075365&partnerID=8YFLogxK

U2 - 10.1117/12.726402

DO - 10.1117/12.726402

M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???

AN - SCOPUS:34249075365

SN - 0819467324

SN - 9780819467324

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Advanced Optical Materials, Technologies, and Devices

T2 - Advanced Optical Materials, Technologies, and Devices

Y2 - 27 August 2006 through 30 August 2006

ER -